International Water Ski Federation
WORLD CABLESKI
TECHNICAL RULES
Edition 1998
World Cableski Commission
Contents
Rule 1. General
Rule 1.1. Applicability of these rules
Rule 1.2. Exceptions to the rules
Rule 1.3. Interpretation of the rules
Rule 1.4. Amendments to the rules
Rule 1.5. Cableski World Championships Dates
Rule 1.6. Effectivity of the Cableski World Championships
Rule 1.7. Drug testing
Rule 1.8. Unsportsmanlike conduct
Rule 2. Competition entry requirements
Rule 2.1. Cableski World Championships entry and administration
Rule 2.2. Team selection
Rule 2.3. Qualification levels
Rule 2.4. Non-team skiers
Rule 2.5. Minimum team qualification
Rule 2.6. Rating effectivity
Rule 2.7. Skier eligibility
Rule 3. Competition events and divisions
Rule 3.1. Events
Rule 3.2. Divisions
Rule 3.3. Rounds
Rule 3.4. Schedule of events
Rule 3.5. Schedule changes
Rule 3.6. Completion
Rule 3.7. Starting order
Rule 3.8. Familiarization
Rule 4. Overall and team competition
Rule 4.1. Overall scoring
Rule 4.2. Qualification for Overall scoring
Rule 4.3. Overall placement
Rule 4.4. Team scoring
Rule 5. Officials
Rule 5.1. Chief Judge - Appointed Officials
Rule 5.2. Choosing Appointed Judges
Rule 5.3. Event Judges
Rule 5.4. Voting of the judges
Rule 5.5. Scoring sheet availability
Rule 5.6. Placement of judges
Rule 5.7. Homologator
Rule 5.8. Technical Officer
Rule 5.9. Secondary positions
Rule 5.10. Tolerances
Rule 6. Safety of competition and security of technical installations
Rule 6.1. Safety Director
Rule 6.2. Safety competition stoppages
Rule 6.3. Equipment safety
Rule 6.4. Unsafe skier disqualification
Rule 6.5. Safety boats
Rule 6.6. Safety boat personel
Rule 6.7. On site medical facilities
Rule 6.8. Life jackets
Rule 7. Rerides
Rule 7.1. Reride criteria
Rule 7.2. Granted reride procedure
Rule 7.3. Request for rerides
Rule 8. Protests
Rule 8.1. Procedure
Rule 8.2. Reasons for protests
Rule 8.3. Protest submission
Rule 8.4. Computation errors
Rule 9. Installation, skis, tow lines
Rule 9.1. Installation
Rule 9.2. Skis
Rule 9.3. Tow lines
Rule 9.4. Prestretching of Tow lines
Rule 9.5. Tow lines and handles for the Trick event
Rule 9.6. Handles in the Slalom and the Jump event.
Rule 9.7. Bibs
Rule 9.8. Not competition supplied equipment
Rule 10. Speeds and tolerances
Rule 10.1. Tolerances
Rule 10.2. Accuracy of timing devices
Rule 10.3. Timing for Slalom and Jumping
Rule 10.4. Position of Timers
Rule 11. Definitions
Rule 11.1. Competition area
Rule 11.2. Definition of a fall
Rule 11.3. Definition of skiing position
Rule 11.4. Start of the skier
Rule 11.5. Disqualification of the skier at the start
Rule 11.6. Team representative
Rule 11.7. Time of posting
Rule 11.8. Usage of a run off
Rule 12. Jumping
Rule 12.1. General Jump Event Conditions
Rule 12.2. Refusal of the skier
Rule 12.3. Jump course
Rule 12.4. Description of the Jump Ramp
Rule 12.5. Jumping speeds
Rule 12.6. Officials stopping a jump
Rule 12.7. Scoring of a jump
Rule 12.8. The result of a skier falling
Rule 12.9. Officials
Rule 12.10. Timing
Rule 12.11. Safety Equipment
Rule 12.12. Jump distance measuring
Rule 12.13. Description of the Johnson system
Rule 12.14. Use of a video jump measurement system
Rule 12.15. Scoring
Rule 12.16. Ties
Rule 13. Slalom
Rule 13.1. General
Rule 13.2. Refusal of a skier
Rule 13.3. Slalom Course
Rule 13.4. Buoys
Rule 13.5. A fall in Slalom
Rule 13.6. Scoring buoys
Rule 13.7. End of the slalom run
Rule 13.8. A miss or "riding over"
Rule 13.9. Slalom towers
Rule 13.10. Officials
Rule 13.11. Timing
Rule 13.12. Safety equipment
Rule 13.13. Scoring
Rule 13.14. Ties
Rule 14. Tricks
Rule 14.1. General
Rule 14.2. Refusal of a skier
Rule 14.3. Trick course
Rule 14.4. Speed
Rule 14.5. Start of trick pass timing
Rule 14.6. End of the trick pass
Rule 14.7. A fall before the pass
Rule 14.8. Use of a release or braking the cable
Rule 14.9. Officials
Rule 14.10. Communication with the Judges
Rule 14.11. Timing the trick pass
Rule 14.12. Use of the video camera
Rule 14.13. Credit for tricks
Rule 14.14. Tricks at the end of the pass
Rule 14.15. Trick lists
Rule 14.16. Calculation of the trick result
Rule 14.17. Trick descriptions
Rule 14.18. Scoring
Rule 14.19. Ties
Rule 15. Records
Rule 15.1. What records are recognized
Rule 15.2. Competitions where records may be set
Rule 15.3. Jump records
Rule 15.4. Slalom records
Rule 15.5. Trick records
Rule 15.6. Ties in an event
Rule 15.7. Record forms and criteria
Rule 15.8. Record administration
Rule 16. Homologation Guidelines
Rule 16.1. General
Rule 16.2. Jump
Rule 16.3. Slalom
Rule 17. Additional Rules
Appendix 1. Trick values
Appendix 2. General diagrams
Diagram 1 / Measuring the height
Diagram 2 / Calculation of AB
Diagram 3 / Handle dimensions in Slalom and Jump
Appendix 3. Calculation of Francor Tables
Appendix 4. Computer Benchmark for computed distances
Appendix 5. Jump diagrams
Diagram 4 / Jump Course
Diagram 5 / Ramp Angle
Diagram 6 / Ramp setting chart
Appendix 6. Slalom diagrams
Diagram 7 / Slalom Course
Diagram 8 / Scoring of buoys
Appendix 7. Trick diagrams
Diagram 9 / Trick Course
Updates, revisions and corrections for these rules can be found on the IWSF Home Page at:
http://www.iwsf.com
Contact: juergen.pitz@usa.net
Issued February 1998
These rules have been drafted in English. In the case of a translation and conflicting
interpretation only the English text shall be considered authentic.
Rule 1.General
Rule 1.1.Applicability of these rules
The rules set forth here govern cableski competitions sanctioned by the International
Water Ski Federation (IWSF). With the exception of entry requirements and other
administrative matters, the Regions shall follow these rules for their sanctioned
competitions. It is requested that Federations establish rules as close to these
rules as possible.
Whenever the masculine is used, the same shall be construed as meaning the feminine
where the context so requires.
Rule 1.2.Exceptions to the rules
Where compliance with the rules is not feasible, the Chief Judge shall, with the
approval of a majority of the Appointed Judges, make the necessary changes, inform
each skier by posting and send a report to the IWSF Cableski Council. Where the rules
are definite and feasible, a vote of the judges to decide whether to enforce any
provision is prohibited.
Rule 1.3.Interpretation of the rules
Questions of interpretation of the rules shall be referred to the IWSF Cableski
Council when possible. Any interpretation made by the IWSF Cableski Council as a
whole shall be considered final. Otherwise the interpretation shall be made by the
majority vote of the Appointed Judges, and the Chief Judge shall make a report to
the IWSF Cableski Council concerning the question.
Rule 1.4.Amendments to the rules
Amendments must be approved by a two-thirds (2/3) majority of the members of the
IWSF Cableski Council. The rules may be amended at any time by the IWSF Cableski
Council. The amended rules shall become effective 60 days after they are sent to
each affiliated Federation.
Until such time as a new edition of the rules is published, the current rules,
as amended by the IWSF Cableski Council, remain in effect. A unanimous decision
of the members of the IWSF Cableski Council is immediately applicable.
All new tricks submitted must include a video showing the trick. If there are
new tricks accepted by the IWSF Tournament Council, they can be accepted by the
IWSF Cableski Council.
Rule 1.5.Cableski World Championships Dates
The Cableski World Championships shall be held biennially in even numbered years.
Rule 1.6.Effectivity of the Cableski World Championships
The inability of a country to attend the Cableski World Championships for one reason
or another (including political reasons) does not require that the entire competition
be cancelled or postponed or that the titles are any less world titles.
Rule 1.7.Drug testing
All competitiors must agree to be subject to doping control. Specific policies and
procedures regarding doping control shall be detailed in the Medical Regulations of
the IWSF.
N.B. For reference
Sanctions for deliberate doping:
e.g. anabolic steroids, amphetamine type stimulants, caffeine, cocaine, narcotics and
designer drugs;
3 years for the first offence;
life ban for the second offence.
Sanctions for inadvertent use of banned drugs:
e.g. ephedrine, codeine;
3 months for the first offence;
2 years for the second offence including the next Cableski World Championships;
life ban for the third offence.
Rule 1.8.Unsportsmanlike conduct
Any skier or his representative, or official whose conduct is deemed unsportsmanlike
or whose conduct may cause discredit to the IWSF, either on or off the competition
site, before, during or after the competition, may be disqualified from all or part
of the competition including completed events and/or be subject to a fine to be
determined by the IWSF Executive Board, by a two-thirds (2/3) majority vote of the
Appointed Judges. The affected individual will be given an opportunity to present
his case before a disqualification decision is made. In the case of a finding of
unsportsmanlike conduct, a report must be submitted by the Chief Judge to the
Chairman of the IWSF Cableski Council. If the Executive Board assess a fine, it
will be paid by the skier's federation.
Rule 2.Competition entry requirements
Rule 2.1.Cableski World Championships entry and administration
Each Federation which is affiliated to the IWSF shall have the right to select a
team of skiers to represent their Federation in the Cableski World Championships.
Each Federation shall certify to the Chairman of the IWSF Cableski Council and to
the organizing committee, not later than 60 days before the scheduled start of the
familiarization of the Cableski World Championships, it's intent to compete. Any
Federation not meeting this requirement will not be allowed to compete until they
pay a fine of 200 Swiss Francs to the IWSF. Any Federation shall certify to the
Chairman of the IWSF Cableski Council, the Chairman of the Region Cableski Council,
and the organizing committee, not later than 10 days before the scheduled start of
familiarization of the Cableski World Championships, the names of the members of its
team, the events each will enter, the ratings of each skier, as well as the names of
the official reserves. Any Federation not meeting this requirements will not be
allowed to compete until the Federation pays a fine of 10 Swiss Francs per skier
per day after the 10-day deadline to the IWSF for each skier not officially entered.
If the official entry forms are not received prior to the 24 hours before the start
of official familiarization, the Federation shall not be entitled to official
familiarization and its skiers's places in the draw shall be determined by the Chief
Judge without reference to their qualifying scores.
Rule 2.2.Team selection
The team shall consist of a maximum of 6 skiers, with the further limitation that no
team may have more than 4 men or 4 women.
Each Federation shall furthermore have the right to nominate two reserve skiers to
its team, to replace any injured skier.
Rule 2.3.Qualification levels
Each skier entered in any event, except when entered under Rule 2.5, shall have in
his possession a rating card or performance booklet showing the following skiing
classification in each event he enters:
Trick Slalom Jump
Level 1 skier
Men: 2.500 pts 6/58/16,00 32,0 m
Women: 1.800 pts 6/55/18,25 25,0 m
Level 2 skier
Men: 2.000 pts 6/55/18,25 27,0 m
Women: 1.500 pts 6/49/18,25 20,0 m
Specialist
Men: 3.500 pts 6/58/14,25 40,0 m
Women: 2.500 pts 6/55/16,00 30,0 m
A skier being a Level 1 skier in at least two events may participate in those events.
To participate in the third event he has to be at least a Level 2 skier in that event.
If a skier is a specialist in one event, he may participate in that event without having
to qualify for the other events.
Rule 2.4.Non-team skiers
Skiers not selected for their national team may qualify to compete in the Cableski
World Championships as individuals in their event if they meet one or more of the
following criteria:
a)World Cableski Record Holder, provided the World Record was performed after the
closing date of the most recently published World Ranking List. The Skier must have
performed the record at least 45 days before the first day of familiarization of the
Cableski World Championships and have his performance ratified by the IWSF Cableski
Council 15 days before the first day of familiarization of the Cableski World
Championships.
b)Ranked in the IWSF World Cableski Ranking List in the top 8 men or top 8 women in
any event excluding overall. The Standing List shall be the most recently published list.
c)Reigning World Cableski Champion in that event (Slalom, Tricks or/and Jump) in which
they defend their title.
All skiers qualified as individuals must be entered by their federation.
Skiers entering as individuals shall not receive overall points.
Rule 2.5.Minimum team qualification
Each Federation shall be entitled to a team of 2 competitors, male of female,
whether qualified under Rule 2.3 or not. Such a skier who is qualified in only 1
event or not qualified in any event may compete in only 2 events.
Rule 2.6.Rating effectivity
Rating cards or performance booklets shall be certified under the responsibility of
the Chairman of the Cableski Council of the Region or his designated representative,
based on performance in competitions sanctioned by the IWSF, a Region or an Affiliated
Federation. Performances recorded in the current calendar year and the previous
calendar year are valid for this purpose. Rating cards or performance booklets so
certified shall be accepted by the Judges without further examination.
Rule 2.7.Skier eligibility
A Federation may select its team in any manner it desires; however each team member
must be a citizen or applying for citizenship of the country the Federation represents.
In case of doubt as to the nationality of a competitor, the Judges normally will refer
to his passport. If the competitor does not have a passport from the country for which
he is skiing, he must prove residence in that country for at least 5 years and membership
of an affiliated club of that Federation. Each Federation shall certify to the Judges
that all members of its team meet these qualifications.
Rule 3.Competition events and divisions
Rule 3.1.Events
The events in a competition are Jumping, Slalom and Tricks, with a champion and
succeeding places determined in each event. A champion and succeeding places shall
also be determined for the Overall as described in Rule 4.1 and for the national
teams as described in Rule 4.4.
Rule 3.2.Divisions
Competition in each event shall be separated into a Men's and a Women's division.
There shall be no division by age.
Rule 3.3.Rounds
Each event shall consist of two rounds: a preliminary round and a final round.
All skiers qualified in an event must ski in the preliminary round of that event
in order to be eligible for the final round.
Only the first 8 skiers, based on the results of the preliminary round, shall be
qualified to ski in the final round of that event. If there is a tie for 8th place
the Chief Judge shall decide whether to:
- have a run-off between the tied skiers,
- have less than 8 skiers in the finals,
- have more than 8 skiers in the finals.
In the case where non-team skiers as described in Rule 2.4 are entered in the competition
on an individual basis and place in the first 8 in the preliminary round, they will
participate in the finals in addition to the 8 best team skiers.
Rule 3.4.Schedule of events
Not later than 2 months before the start of the competition, the Competition
Chairman shall send to each affiliated Federation, by air mail, a schedule
showing the days on which official familiarization and the days on which the
competition events will be held. The schedule of events for both preliminary
and final round shall be drawn up by the Chief Judge, the Chairman on the IWSF
Cableski Council and the Competition Chairman and posted prior to the start of
official familiarization. This list shall include starting times for each day.
A schedule of starting times for individual events, if shown, shall be a guidance
of the skiers only and any deviation shall not constitute a change. It is recommended
that jumping be scheduled as the last event in both the preliminary and final rounds.
Rule 3.5.Schedule changes
Changes in the schedule during the competition shall be made only for weather,
water conditions, safety, or a similar reason. A majority of the Appointed Judges
must approve the change and all affected skiers shall be notified by posting.
Although schedule changes are to be discouraged, the judges should not hesitate
to make adjustments required for safety.
Rule 3.6.Completion
Once the competition has started, the judges do not have the authority to cancel
any event, except in the case of a definite safety hazard; and, if possible, the
competition must be completed, even if the judges are obliged to continue it on
another cable, unless the IWSF Cableski Council decides otherwise on the recommendation
of the Jury.
Rule 3.7.Starting order
At noon of the day before the start of a preliminary round the entry list shall be
closed and thereafter the order of skiers made by random draw and posted. No change
in this order is allowed except that a team representative may:
- Withdraw a skier from competition.
- Replace, with the authority of the Chief Judge and before the start of the first
event, that is to say before the first skier taking part in the first event has
started, an injured skier by a qualified official reserve from the same team. The
substitute skier shall start first in the seed in which he is qualified unless the
draw has not yet been completed.
The competitors will be drawn in the following manner: List of competitors will be
drawn up in order of performance in each event for both men and women. Skiers will
then be divided into seeded groups of a size decided by the Chief Judge and each group
will then be drawn separately (c.f. however Rule 12.1 for jumping order in the Jump event).
The Event Judges may reverse or change the starting order of these groups according
to the prevailing conditions.
The order of the skiers qualified for the final round in any event shall be the
reverse of their order of placement in the preliminary round of that event.
The order of skiers tied in placement shall be settled by random draw.
Rule 3.8.Familiarization
The skiers will be permitted to familiarize themselves with the installation and jump
ramp under the authority and the responsibility of the Chief Judge. Each skier
participating in familiarization shall be allotted either a set number of rounds
or a certain amount of time at the discretion of the Chief Judge based on the
principle that every skier shall receive an equal opportunity for familiarization.
The schedule for familiarization shall be decided by the Chief Judge. The Chief
Judge shall have the discretion to change the start time of an individual's or
team's familiarization based on extraordinary circumstances.
Rule 4.Overall and team competition
Rule 4.1.Overall scoring
Each team skier shall be awarded in each event a certain number of overall
points according to the computation of his better score in either the preliminary
or final round according to the Francor Tables, based on the current world records.
Rule 4.2.Qualification for Overall scoring
To be considered for Overall standings, a skier must have received points in all
three events.
Rule 4.3.Overall placement
Places in the Overall Championship shall be determined by adding each skier's
Overall points in all three events.
Rule 4.4.Team scoring
In team competition, the best three Overall scores, men or women, in each event,
in the preliminary or final, shall be summed up to obtain the team score. The
performance by a skier who is entered as an individual shall not be taken into
consideration in the calculation of the team score.
Rule 5.
Officials
Rule 5.1.Chief Judge - Appointed Officials
At least 6 months prior to the start of official familiarization at the Cableski World
Championships, the President of the IWSF shall appoint the Chief Judge for the Cableski
World Championships from among the Chief Judges proposed by each Region Cableski Council.
The President of the IWSF Cableski Council shall appoint for the Cableski World
Championships the Homologator, the Chief Calculator, the Technical Officer and the
Assistant of the Chief Judge from among the officials proposed by each Region Cableski
Council.
The appointment of the Assistant to the Chief Judge must be made with the Chief Judge's
approval.
The Appointed Judges shall be selected by each Regional Cableski Council.
Rule 5.2.Choosing Appointed Judges
The judges choosen for the Cableski World Championships must represent the Regions
as follows: A minimum of 2 judges from each region.
A total of 8 judges shall be selected.
The Chief Judge and his Assistant are not included in the above number.
If a region is unable to propose the specified number of qualified judges,
the IWSF Cableski Council can appoint additional judges from other regions.
Rule 5.3.Event Judges
The Event Judges must be choosen by the Chief Judge from the AppointedJudges,
preferably as follows:
For Slalom: at least one judge from any one Region.
For Tricks: the best panel appropriate for the level of trick performances.
For Jumping: one judge per Region
Rule 5.4.Voting of the judges
Every vote of the Appointed Judges or the Event Judges shall be decided by a simple
majority of the judges voting. In the event of a tie, the Chief Judge shall cast the
tie-breaking vote. If a person has more than one function, he will not have more than
one vote.
All issues for the actual event should be settled before the next skier starts.
Rule 5.5.Scoring sheet availability
The scoring sheets of each Judge shall be made available for inspection by the Team
Captains as soon as the results are posted. Under the Team Captain's responsibility,
a skier may view his own scoring sheets.
If the results are not available 30 minutes after the last skier of the day, the
official posting will be delayed to one hour prior to the first skier of the next
day. The unofficial results should be posted as soon as they are available.
Rule 5.6.Placement of judges
Where practical, judges shall be separated to ensure completely independent opinions.
Rule 5.7.Homologator
His functions are among others:
a)To assure himself of the technical comparability of the competition with other
competitions.
b)To assure himself of the fact that during the competition any changes of the
Cableski installation do not cause advantage or disadvantage to any competitor.
Rule 5.8.Technical Officer
The Technical Officer shall ensure the fairness and impartiality of the competition
as far as the cable operation is concerned. The Technical Officer is under the
authority of and responsible to the Chief Judge.
Rule 5.9.Secondary positions
Personnel to fill secondary positions shall be selected by the Chief Judge from
among other experienced Judges and Officials in attendance. Wherever possible,
Officials filling complementary positions (e.g. timer, top and bottom meter
readers, etc.) should be of different nationalities.
Rule 5.10.Tolerances
All tolerances are to allow for human error and the intentional use of tolerances
by competition officials to improve skier performance will not be tolerated. In any
activity involving the performance of an official where a tolerance is involved,
it is the official's responsibility to attempt to be as close as possible to the
actual specification.
Rule 6.Safety of competition and security of technical installations
Rule 6.1.Safety Director
At least 2 months before the competition, the organizing Region Cableski Council shall
appoint a Safety Director, who will appoint such assistants as appear necessary, and
inform the President of the IWSF and the Chairman of the IWSF Cableski Council. The
Safety Director shall be responsible for the safe conditions of all equipment, facilities
and operation of the competition; but this shall not prevent him from delegating specific
responsibilities to his assistants as approved by the Chief Judge. He shall have the
authority to take whatever action is necessary including stopping the competition whenever
he observes a condition he believes unsafe. The Chief Judge may overrule any contemplated
action or decision of the Safety Director on his own responsibility.
Rule 6.2.Safety competition stoppages
Should the Safety Director stop a competition for any reason, disqualification time
periods shall not run as long as the competition is stopped.
The Safety Director should remain near the competition area as much as possible.
Rule 6.3.Equipment safety
The Safety Director shall determine whether equipment to be used by a skier meets safety
specifications.
Rule 6.4.Unsafe skier disqualification
No skier shall be allowed to compete or to continue to compete if, in the opinion of the
Safety Director and a majority of the Event Judges, his competing would be a danger to
himself or other skiers in the competition. During the competition, the Safety Director
may, at any time, request the Chief Judge to halt the competition for a poll of the Event
Judges in regard to a skier's actions or conditions. Whenever practical, the advice of the
medical officer should be obtained.
Rule 6.5.Safety boats
It is recommended to use one safety boat positioned in the inside of the cable during all
events and familiarization times, facing the competition area or the skier's anticipated
point of landing in jumping. In jumping an additional swimmer is recommended. The motor
of the rescue boat shall be running during the competition and the familiarization.
Rule 6.6.Safety boat personel
The safety boat will be manned by:
a)An experienced driver who is familiar with the conduct of all competition events and
familiarization.
b)A swimmer, also familiar with all competition events and familiarization and ideally
being fully trained in First Aid, Emergency Resuscitation and Water Rescue Techniques
(as outlined in the IWSF Safety Manual).
The swimmer will wear a life jacket at all times and, in the event of a serious fall,
will jump into the water to assist the skier. If the injured skier is unable to climb
into the safety boat with little or not assistance, the skier will be floated to the
shore and lifted from the water on a suitable board or strecher. Under no circumstances
will an injured skier be lifted passively over the side of the safety boat.
IT IS EMPHASIED THAT, IN INTERNATIONAL COMPETITION, LANGUAGE DIFFICULTIES MAY INTERFERE
WITH COMMUNICATION; AND FOR THIS REASON, THE SWIMMER MUST GET INTO THE WATER TO ASSIST
THE INJURED SKIER.
Rule 6.7.On site medical facilities
The Safety Director will appoint a Competition Medical Officer who will undertake to
provide the following services:
a)A suitably qualified medical officer will be in attendance during all familiarization
and competition events.
b)A suitably equipped medical station prepared to deal with any sort of medical emergency
will be conveniently located at the competition site.
c)Suitable transportation facilities that will allow an injured skier to be moved safely
and promptly to the best local medical unit for further care.
d)A working relationship will be established between the local hospital or medical unit
the Competition Medical Officer, such that casualities will get prompt and expert
treatment when required.
Rule 6.8.Life jackets
A life jacket must meet the following specifications:
a)It must be smooth and soft and free from attachments or material likely to cause
injury in a fall.
b)It must be constructed and fastened in such a manner that it is unlikely to be torn
loose or damaged so as to render it useless in a hard fall.
c)It must float the skier.
d)It must not be an inflatable device.
e)It must be constructed so as to provide adequate protection from impact damage to the
ribs and internal organs. A normal wet suit shall not be considered adequate protection
in this respect.
Rule 7.Rerides
Rule 7.1.Reride criteria
When unfair conditions or a malfunction of the equipment supplied by the organisers
occurs, which, in the opinion of a majority of the Event Judges adversely affect a
skier, he shall be granted the option of a reride only on the passes affected. When
the skier receives an unfair advantage, the reride is mandatory. When taken, the reride
is scored except in the specific cases in Jumping and Slalom (see Rule 12.10, Rule 12.13
and Rule 13.11).
Rule 7.2.Granted reride procedure
Rerides must be taken as soon as technically possible after they are granted (c.f.
Rule 12.10 for Jump rerides and Rule 13.11 for Slalom rerides). If consecutive rerides
are granted, the skier has the option for a 5 minute rest before continuing. If the
skier elects to take a 5 minute rest, the next skiers in order shall ski, and the
reride shall be taken at the conclusion at the skier's run during which the 5 minute
rest period expires.
Rule 7.3.Request for rerides
Request for rerides may be initiated by an Event Judge or the Technical Officer before
the next skier starts or may be initiated, as soon as possible, by the skier or his team
representative and shall be decided as soon as practicable thereafter. If, in the opinion
of the Event Judges, the request was not initiated as soon as possible after the skier
skied, the request shall be denied.
Rule 8.Protests
Rule 8.1.Procedure
Protests shall be made to the Chief Judge only by a team representative and shall be
considered by the Event Judges. Protests must be in writing, must state the reason(s)
for the protest and must be filed as soon as possible, but not later than 30 minutes
after the results of the event are announced and the Judges' scoring sheets are available
for inspection.
Rule 8.2.Reasons for protests
Protests shall be allowed only for failure of the Organisers or Officials to comply with
these rules and only if this non-compliance with the rules has an adverse effect on a
skier. No protest shall ever be permitted on a judgement decision by the Judges.
Rule 8.3.Protest submission
Protests must be accompanied by the approximate equivalent in local currency of 25 Swiss
Francs. This amount will be refunded if the protest is considered reasonable by the Event
Judges.
Rule 8.4.Computation errors
A correction of an error in the computation of scores shall not be considered a protest
and the correction shall be made on the approval of the Chief Judge and Chief Calculator
if requested within 2 hours after the results of the event are announced and the Judges'
scoring sheets are available for inspection.
Rule 9.Installation, skis, tow lines
Rule 9.1.Installation
The installation shall be a 10 mm cable with a competition area between two deflection
pulleys with a minimum distance of 300 m,shall turn counterclockwise and shall have the
power necessary to attain and maintain the required speeds.
At least half of the carriers should be prepared for the competition. Should a carrier
disconnect twice, the tension should be retensioned immediately or another carrier should
be tensioned for competition conditions. Either the even or odd carriers should be trimmed.
From the organising committee at least 1 person should be present who knows the
installation and is responsible for it. The installation must be in optimal technical
condition, in order to guarantee a smooth running of the competition.
The installation must have a speedometer calibrated at least at the speeds of
28 km/h, 43 km/h and 58 km/h.
Rule 9.2.Skis
The maximum ski width shall not exceed 30 percent of the overall length.
Any type of fixed foot bindings may be used.
Any type of fixed fins may be used.
Devices affixed to the ski intended to control or adjust the skiing characteristics of
the ski are allowed as long as they are fixed in that they do not move or change during
actual skiing.
No other devices are permitted.
Skis must be safe. There must be no unnecessary sharp or abrasive (to the touch)
attachments to the ski which could, in the opinion of the Safety Director, inflict
injury to the skier should he come in contact with the ski in a fall.
Rule 9.3.Tow lines
This rules mention two type of lengths of tow lines; the effective and the horizontal
length. The effective length is calculated, based on the given horizontal length and the
measured average height of the cable.
Calculation of the average height of the main running cable "AB" = (Height of the entry
wheel "H1" + height of the main running cable in the middle "H2" + height of the exit
wheel "H3") : 3.
When "H2" is measured with a loading of 70 kg on the cable (see Diagram 1).
Diagram 2 shows the relations between the horizontal length of a line, the effective
length and the height of the cable. The distance AB is the height of the cable. The
corner ABC is a 90 angle. Point A is the end of the line which is fastened to the main
running cable. Point C is the handle. The distance AC is the effective length of the
line. The distance BC is the horizontal length of the line.
When the height AB of the cable and the horizontal length BC is given, the effective
length shall be calculated with the help of the next formula:
All line lengths given in this rules are the horizontal lengths.
The organizer shall furnish single-handle tow lines as in (d) below, made of 6 mm,
single braided, monofilament line of plastic material, with the handles and line
meeting the following specifications:
a) Number of strands = 12.
Number of yarns each strand = 60.
Diameter at 5,5 kg load = 6,3 mm.
Weight per meter = 16,0 g to 23,0 g.
Breaking load, minimum = 590 kg.
Elongation at 115 kg tensile load = 3,2 % maximum.
All measurements of tow lines shall be made at 20 kg tension and shall be made between
the centre line of handle at the point furthest from the end of the trimball.
b) The handle shall be made of 2,50 to 2,80 cm outside diameter material with no sharp
edges or projections, with a non-slip surface or coating. The attaching ropes must in
all cases go throught the handle and must be attached so there is no possibility of
movement between the rope and the handle when in use. The minimum certified breaking
load of the handle shall be 270 kg applied at the rate of 290 kg for a minute at two
load points 9 cm apart at the centre of the handle with the ends supported at the rope
holes.
c) Tow lines should be prepared as follows: 6 lines of 18,25 m, 3 of 16,00 m and 14,25 m
and 2 of the shorter lengths. A tolerance of ± 15 cm on the distance from the end of the
trimball to the middle of the handle is allowed for ropes till 14,25 m. From the 13,0 m
rope on the tolerance is reduced to ± 7,5 cm.
d)The tow rope shall consist of the following three parts:
- the handle with a length of 1,50 m
- the tow rope
- the trimball and cable
e)Dimensions shall be as in Diagram 3.
Rule 9.4.Prestretching of Tow lines
All ropes should be prestretched to insure tightness of the splices before measurement.
Rule 9.5.Tow lines and handles for the Trick event
The skier has the choice to use his own line (with trimball) of any length he desires or
to use the competition supplied 18,25 m lines. The skier must furnish his own handle for
the trick event of any length, dimension or material.
Rule 9.6.Handles in the Slalom and the Jump event.
Skiers in Slalom and Jump are required to use competition supplied handles. Organizers
shall furnish a minimum of 6 identical handles as described in Rule 9.3.
Rule 9.7.Bibs
It may be required that skiers must wear identifying bibs while skiing. The bibs must be
of a design approved by the Chairman of the IWSF Cableski Council. The central feature
of the bib will be an identifying number on both the front and back of the bib. The
individual digits of the number must be a minimum of 15 cm in height and be clearly
visible from a distance. The design must allow for use of an arm sling in jumping and
also be snug so that it does not interfere with the free movement required in tricks.
The bibs will be given to each team captain before the competition for distribution to
his team. Spare bibs, with no numbers, should be available at the starting jetty in case
a skier's bib is damaged and unusable. Skiers must wear the bib with the number assigned
to them only.
Rule 9.8.Not competition supplied equipment
The use of any not competition supplied equipment is at the skiers own risk.
Rule 10.Speeds and tolerances
Rule 10.1.Tolerances
All speeds in Slalom, Tricks and Jumping shall be accurate to ± 0,5 km/h. For a speed
to be considered accurate in any event, the speeds recorded in the course, as noted by
the official, must be within the tolerances allowed. The speed may vary a maximum of
± 0,5 km/h for a distance before entering the competition area and has to be maintained
until the skier is out of the competition area, for the exception of Rule 12.5.
Rule 10.2.Accuracy of timing devices
Any timing device used in a competiton must be checked for accuracy by the Homologator
or the Chief Judge.
Rule 10.3.Timing for Slalom and Jumping
The timing for Slalom shall start when the skier's carrier passes the last deflection
pulley before the slalom course and ends when the skier's carrier passes the first
deflection pulley after the slalom course.
Timing for Jumping will be taken between the two carriers immediately following the
skier's carrier. The timing starts when the first carrier after the skier's carrier
passes the deflection pulley before the ramp and ends when the second carrier after
the skier's carrier passes that deflection pulley.
An automatic timing should be used during the same periods.
Rule 10.4.Position of Timers
There shall be two officials for timing in Slalom and Jumping. The Offical Timer shall
be located at the most appropriate position. The Backup Timer shall be located on one
of the judges towers and shall govern in the event that the Official Timer fails to get
an accurate time for some reason. The timer shall observe and record all timings, and
deviations, on each pass, and shall inform the responsible official about any deviations.
Rule 11.Definitions
Rule 11.1.Competition area
The competition layout and dimensions are shown in Diagram 4, Diagram 7 and Diagram 9.
No buoys or markers other than those indicated are permitted within the competition area
except to mark safety hazards, landing or starting areas or turning buoys. Any such buoys
shall be distinguishable from competition buoys and shall be pointed out to the skiers at
the start of the competition.
Rule 11.2.Definition of a fall
A fall in any event is defined as accomplished at the moment any one of the following
occurs:
a)The skier loses possession of the tow line.
b)The skier does not have at least one ski on one foot.
d)The weight of the skier is not supported by his ski or skis; and in addition, the
skier is ultimately unable to regain skiing position.The skier may not recover by making
a tumble turn.
Rule 11.3.Definition of skiing position
Skiing position is defined as that position in which all of the following exists:
a)The skier has possession of the tow line.
b)The skier is riding forward or backward with a ski or skis on his feet.
c)The weight of the skier is entirely supported by his ski or skis, or the skier is
ultimately able to regain good balance.
Rule 11.4.Start of the skier
The skier is considered to have started when the marked carrier of the main running-cable
connects with the ski line.
Rule 11.5.Disqualification of the skier at the start
Each skier who is not ready to start when the marked carrier connects with the ski line
shall be disqualified for the remainder of that event.
In the case where a skier has been disqualified or has been scratched the next skier
shall start as soon as technically possible.
In Slalom there shall always be a skier ready to ski in case an unforseen empty run
occurs. This forerunner will then ski one round before the next competitor starts.
The skiers will make every effort to return to the starting jetty without undue delay
when they are still skiing in the same event.
Rule 11.6.Team representative
Each Federation shall select a team representative whose name shall be given to the
Chief Judge before familiarization starts. The team representative shall represent
all skiers from his federation. An alternative team representative may also be named.
Rule 11.7.Time of posting
The time of posting is when the Chief Judge signs the results.
Rule 11.8.Usage of a run off
The result performed in a run off will only be used for determination of final
placement for the event. This means that this result will not be used for overall
score, record setting, ranking list performances and performance booklets entries.
Rule 12.Jumping
Rule 12.1.General Jump Event Conditions
Each skier shall be entitled to two registered jumps or passes or falls in the
preliminary round and three registered jumps or passes or falls in the final round.
The jumps must be done singly. The skier is not allowed to take the jumps one after
the other.
Women will have the option of choosing an average height of either 1,50 m or 1,65 m.
Skiers jumping at 1,50 m will be drawn together and will ski before those jumping
at 1,65 m in both the preliminary and final rounds.
Men will have the option of choosing an average height of either 1,65 m or 1,80 m.
Skiers jumping at 1,65 m will be drawn together and will ski before those jumping
at 1,80 m in both the preliminary and final rounds.
A skier may not change his chosen height of the ramp for the final round if he qualifies.
Only the length of the jump will be considered no matter what ramp height is chosen by
the skier.
A fall shall not eliminate the skier from the following pass provided that fall is a
result of a jump.
Rule 12.2.Refusal of the skier
A skier may refuse to enter the jump course on each jump by raising one arm in the air.
He shall not be penalized for so doing providing this refusal was for a reason judged
acceptable by the Event Judges. The skier must be ready to ski immediately after the
decision of the Event Judges. Should the skier not be ready or should the reason be
judged not acceptable by the Event Judges, the jump shall be deemed to have been taken.
A jumper shall receive no further jumps in a round, if on a definite cut to the ramp,
the jumper elects to pass between the ramp and the main running cable, whether or not
he retains the tow rope.
Rule 12.3.Jump course
The jump course begins at the last deflection pulley before the ramp and finishes at the
next deflection pulley after the ramp (see Diagram 4).
The ramp must be situated between 180 m and 190 m after the first deflection pulley
of the jump course. There shall be a buoy at 140 m and one at 160 m before the ramp.
These buoys will act as guide buoys for the skiers, to start their cut.
Rule 12.4.Description of the Jump Ramp
The jump ramp shall be an inclined plane with an apron on the right-hand side. The
ramp shall meet the following specifications:
a)Width: 3,70 m to 4,30 m at all points. 4,20 m to 4,25 m is recommended.
b)Length out of water: 6,40 m to 6,70 m at all points.
c)Length under water: 60 cm minimum.
d)Ratio of ramp height at take off edge to ramp length out of water:
0,235 ± 0,003 or 0,255 ± 0,003 for Women;
0,255 ± 0,003 or 0,275 ± 0,003 for Men, at the skier's option.
e)Ratios are to be computed on both sides of the ramp, and the ramp height at the
take off edge at the two corners may differ by no more than 2,5 cm (see Diagram 6).
f)The surface must be flat with a maximum deviation of 2,5 cm from plane.
g)An apron shall extend the full length of the ramp on the right-hand side and be at
least 30 cm under water when the ramp is set for the 1,80 m height in Men's divisions.
Ramp aprons shall be of different color or shade from the ramp surface so as to provide
a satisfactory contrast between apron, water and ramp surface. The apron shall have a
minimum angle of 40( and a maximum of 50(. The recommended angle is 45(.
h)6,40 m and 6,70 m length markings, clearly identified, shall be placed on the ramp
surface so that they are readily visible. A line visible from shore shall be painted
at the center of and just below the take off edge for meter sighting purposes.
i)The jumping ramp must be securely anchored in place so that the center take off edge
will not vary more than the sighted width of the crosshair on both meters after coming
to static rest. "Static rest" is the position assumed by the ramp in ambient water not
affected by skier's wakes or backwash.
j)All measurements of the ramp shall be made under competition conditions, including the
weight of watering equipment and not including the weight of a skier.
Rule 12.5.Jumping speeds
The speeds for the jumping event shall be at the option of the skier up to the following
maximum speeds:
a)Men: 57 km/h
b)Women: 51 km/h
The maximum jump speed will be lowered only by increments of 3 km/h. Following jump
speeds will be used: 39 km/h, 42 km/h, 45 km/h, 48 km/h, 51 km/h (max. for women),
54 km/h, 57 km/h.
The skier can elect his startspeed, provided that it is not more than 15 km/h lower
than the elected jumpspeed. Immediately after the carrier has passed the last deflection
pulley before the ramp, the speed will be brought from the startspeed to the jumpspeed.
Decelerations of the cable from jumpspeed to startspeed starts immediately after the
skier hits the water after the jump. The rate of deceleration will be the same as the
rate of acceleration from startspeed to jumpspeed and should be as fast as possible.
N.B.: The startspeed is the speed the cable has to have before the skier enters the
competition area, means before the carrier passes the last deflection pulley before
the ramp. The skier can leave the starting jetty with a lower speed.
Rule 12.6.Officials stopping a jump
A jump shall not be registered should the Judges decide that there is a hazard because
of dangerous water conditions or other reasons. A judge shall then inform the Technical
Official to lower the speed.
Rule 12.7.Scoring of a jump
A jump shall be scored when the skier passes over the ramp, lands and skies until the
carrier passes the pulley after the ramp without falling.
Rule 12.8.The result of a skier falling
Every time a skier falls from the time he has started until the carrier goes around the
deflection pulley after the ramp, it shall count as a registered jump, for which he
receives no score.
Rule 12.9.Officials
There will be four judges for the event: three judges will be stationed on shore. The
fourth judge will be at the timing device. He is authorized to give reruns under
Rule 12.10.
Rule 12.10.Timing
The fourth judge of Rule 12.9 shall observe the accuracy of the Technical Officer by
checking the speed.
When the speed is above the maximum allowable a rerun is mandatory. If the speed chosen
is below the maximum and the speed is out of tolerance, the skier shall have the option
of a reride as long as the maximum speed tolerance was not exceeded, in which case the
reride is mandatory. In case of a mandatory reride, the pass leading to the reride will
not be scored.
If the speed is below the minimum allowable, the skier has an optional reride. In case
of an optional reride, the jump shall not be scored less than the distance obtained in
the pass leading to the reride.
If a rerun is given because of an error in speed, it must be taken immediately, or, in
the case of a fall, when the skier returns to the start dock.
Rule 12.11.Safety Equipment
All skiers in jumping events must wear approved life jackets and suitable helmets.
Rule 12.12.Jump distance measuring
There are three approved jump measuring systems:
- The Johnson system.
- The Böttcher Video measurement system.
- The Corson Video measurement system.
All systems must be checked and approved by the Homologator after installation.
Also other system can be used if checked and approved by the Homologator.
Rule 12.13.Description of the Johnson system
When using the Johnson system the jump distances are measured by a system of meters
measuring the subtended angles provided by 3 meter stations, each consisting of two meters.
To insure accuracy, it is recommended that each meter station be no more than 70 m from
the point of landing.
Jump distances are to be calculated through the use of a computer. Any computer program
used for this purpose must be verified by passing the benchmark tests included in this
rules. The ramp setup must give proper triangles as described in the benchmark.
The point of landing is defined as the center of the inscribed circle which is tangent
to all three sides of the triangle formed by the three average sightings from the meter
stations. The distance is calculated from the landing point back to the ramp. The size
of the triangle is defined as the diameter of that inscribed circle.
If the top and bottom sightings from any single meter station are more than 0,6 m apart
at the point of landing, then the average value and the single sighting with the smaller
value will each be tried in turn, and whichever of these produces the smaller triangle
will be used to derive the official distance.
If the official resolution of a particular set of sightings, according to the above rules,
produces an official wide triangle, and that set of sightings included a spread in excess
of the 0,6 m test limit AT ONLY ONE of the meter stations, which yielded the smaller
triangle size by using the average rather than the shorter reading alone, then the longer
reading from that station may be tried alone, and used as official, if it eliminates the
wide triangle.
On a given jump when the diameter of the inscribed circle obtained by the angular
measuring system is greater than 0,6 m, the skier will have the option to either take
the jump over again or accept the shortest distance measured from a corner of the
triangle provided that on any of his preceding or following jumps, the measured distance
does not exceed the distance to the furthest corner of the large triangle. In the case
where one of the preceding or following jumps does exceed the distance to the furthest
corner, the official score of the wide triangle jump will be the shortest vertex.
In the case where a competitor decides to take the jump over again, the competitor's
distance on the reride may not exceed the distance measured to the furthest corner of
the large triangle of the disputed jump but will not be less than the distance measured
to the nearest corner of the large triangle of the disputed jump. Multiple rerides are
to be resolved sequentially in the order in which they occured.
Jump distances shall be measured from a point at the water line directly below the center
of the top edge of the ramp to the point where the heels of the skier reach their maximum
depression in the water (as normally indicated by the "spout" of water rising after the
skier's landing).
Rule 12.14.Use of a video jump measurement system
If video jump measurement is used, the distance shall be measured to the skier's point
of impact in the water closest to the ramp (first point of impact) and then an
adjustment offset of 2,1 m shall be added.
For the video system, there shall be two designated officials operating the system
who shall jointly agree on the impact point. The calculated distance shall not be
displayed until the impact point is decided upon.
If video jump measurement is used, video methods (video taping) or a standard meter
system may be used as backup.
Rule 12.15.Scoring
Jump distance may not be scored in increments of less than 10 cm.
The longest jump of each round will be the only one counted. The skier's result from
the final round will determine his placement in the event.
The better result obtained by the skier, in either the preliminary or the final round,
shall count towards the overall.
To be considered for placement and receive overall points, skiers must have at least
one successful jump on their credit.
Rule 12.16.Ties
If a tie exists for first place, it shall be run off. If a tie exists for second or
third place, placement shall be decided on the basis of the higher preliminary round
score. If a tie still exists, it shall be run off. The run off shall have a new
drawing of order. Each tying skier shall be allowed two jumps with the longer jump
being scored according to Rule 12.15. Repeated ties shall be run off in the same
manner until broken.
Rule 13.Slalom
Rule 13.1.General
The skier shall follow the main running cable around the deflection pulley before
the slalom course, pass around the outside of all 6 buoys at his discretion, and
after rounding the 6th buoy, proceed throught the end gate, and ski until the carrier
has passed the deflection pulley after the slalom course.
The following speeds and tow lengths shall be used for Slalom:
Men Women
1st pass 18,25 m rope 58 km/h 55 km/h
2nd pass 16,00 m rope 58 km/h 55 km/h
3rd pass 14,25 m rope 58 km/h 55 km/h
4th pass 13,00 m rope 58 km/h 55 km/h
5th pass 12,00 m rope 58 km/h 55 km/h
6th pass 11,25 m rope 58 km/h 55 km/h
In any further passes, the rope shall be shortened by half a metre. If, in the opinion
of the majority of the Event Judges, the water or weather conditions require it, the
first speed may be lowered to 55 km/h or 52 km/h for men and 52 km/h or 49 km/h for
women, and then proceed upward in speed in 3 km/h increments. The skier has to do one
pass after another without falling until the maximum speed has been achieved. Then the
skier will proceed as shown in the table.
The finals shall start one pass higher than in the preliminary round unless changed
by the Event Judges.
The skier may choose rope length (or speed) any time before he starts his run. A
skier wishing to start on a shorter rope, shall inform the Technical Officer of
his wishes at least three skiers before. Except in the case of the first and second
skier on the startlist who shall give notice 5 minutes before.
Further the skier has to inform the Technical Officer at which speed he desires to
leave the starting jetty.
Rule 13.2.Refusal of a skier
A skier may refuse to enter the slalom course by raising one arm in the air. He
shall not be penalized for so doing providing this refusal was for a reason judged
acceptable by the Event Judges. The skier must be ready to ski immediately after the
decision of the Event Judges. Should the skier not be ready or should the reason be
judges not acceptable by the Event Judges, he should be disqualified from the
remainder of the event.
Rule 13.3.Slalom Course
The slalom course begins at the last deflection pulley before the 1st slalom buoy
and finishes at the next deflection pulley (see Diagram 7).
Rule 13.4.Buoys
Color of buoys shall be selected for maximum visibility. A fluorescent yellow or red
paint is recommended.
Middle buoys within the slalom course shall be a different color from the gate and
slalom buoys and shall be a minimum of 22 cm in diameter.
Slalom and gate buoys shall be 22 to 28 cm in diameter. 23 cm is recommended.
All buoys shall be of a lightweight, pliable material with smooth exposed surface.
Each buoy shall have a strong loop for attaching anchor lines. The buoys must be
attached to the anchor line by the use of a system that will tighten the buoy in
such a way as to ensure that it does not move around from its position.
Slalom buoys shall be fastened so that they have 11 to 17 cm of height out of the
water. 11,5 cm is recommended. The exit gate and middle line buoys shall be fastened
so that they have 16 to 22 cm of height out of the water. 17 cm is recommended.
Rule 13.5.A fall in Slalom
A fall before or in the course concludes the performance of the skier, but he shall
receive credit for buoys scored before the fall.
Rule 13.6.Scoring buoys
A buoy not missed is scored as follows, up to the point of the first miss:
a)¼ buoy when the skier crosses the line C-D, in a skiing position (Rule 11.3),
before the buoy to be rounded. The skier shall not receive the ¼ buoy if he passes
inside the buoy.
b)½ buoy when the skier has recrossed line C-D in a skiing position (Rule 11.3),
before the level of the next buoy or exit gate.
c)1 buoy when the skier has crossed the middle-line under the main-running cable,
marked by middle-buoys, before passing the level of the next buoy or the gate without
falling (Rule 11.2).
(see Diagram 8)
A deflection pulley or the end gate is not scored at all.
Rule 13.7.End of the slalom run
A skier in either a preliminary of final round may continue to run the course as
provided in Rule 13.1 until he misses a buoy or end gate, at which point his scoring
ends for that round.
Rule 13.8.A miss or "riding over"
It is a miss to ride inside the buoy or outside the end gate or to ride over, straddle
or jump over a buoy or a gate buoy or to jump through the end gate; but there is no
penalty for grazing a buoy with a ski or part of the body.
"Riding over" shall be defined as hitting a buoy with the ski so as to move it
significantly from it's position or temporarily sink it. Hitting a buoy less severely
shall be considered as "grazing".
Rule 13.9.Slalom towers
The slalom judging towers shall be braced structures having a platform with railing
approximately 2 m above the water surface. They may either rest on the bottom or be
securely anchored in position. The use of two slalom judging towers is mandatory,
located on different sides of the slalom course, in suitable viewing positions.
The jump ramp may be used as a slalom judging tower.
Rule 13.10.Officials
There shall be three judges on the first judging tower. There shall be two judges
on the second judging tower placed in a suitable position to judge the exit gate.
Skier buoys shall be judged by all five judges. The exit gate shall be judged only
by the two judges on the exit gate tower unless they are not in agreement, in which
case all five judges will vote on the exit gate.
Rule 13.11.Timing
The Timer shall inform the responsible official of wrong speeds to take the necessary
action.
Where the applicable speed is slower than allowable on any pass, a rerun shall be
mandatory. If the pass was not a perfect pass, the skier may not improve his score
over that obtained in the slow pass, unless the speed is so slow that it is equal
to or below the fast tolerance of the next slower pass. If the pass was a perfect
pass (score is 6, skier to continue), the skier may choose to proceed to the next
pass instead of repeating the pass. If the skier then makes a perfect pass, he
receives credit for both passes. If the pass is missed, he will receive credit
for the buoys made as if it were the lower, skipped pass.
Where the speed is faster than allowable and the skier has not made a perfect
pass, he shall have an optional reride. If taken, it shall not be scored less
than the score obtained on the pass leading to the reride.
Rule 13.12.Safety equipment
All skiers in Slalom events shall be required to wear an approved life jacket.
Rule 13.13.Scoring
The skier's result from the final round will determine his placement in the event.
The better result obtained by the skier, in either the preliminary or the final
round, shall count towards the overall. He shall get credit for his score on the
speed he was skiing at, under the provisions of Rule 13.1 provided his first pass
is perfect. A skier who waives one or more passes and whose first pass is not
perfect shall receive the points as they would have been scored at the starting speed.
Overall points obtained at starting speed are calculated using separate tables
('First pass not perfect').
To be considered for placement and receive overall points, skiers must have more
than 0 buoys on their credit.
Rule 13.14.Ties
If a tie exists for first place, it shall be run off. If a tie exists for second
or third place, placement shall be decided on the basis of the higher preliminary
round score. If a tie still exists, it shall be run off. The run off shall have a
new drawing of order. The tie breaking run shall begin with the scheduled speed and
rope length of the last complete pass and conclude with the first miss. Repeated ties
shall be run off in the same manner until broken.
Rule 14.Tricks
Rule 14.1.General
Each skier shall be allowed two passes through the trick course during which time
he may perform as many tricks as he desires. The trick skier is not allowed to take
the two passes consecutively.
Rule 14.2.Refusal of a skier
A skier may refuse to enter the trick course by raising one arm in the air. He shall
not be penalized for so doing providing this refusal was for a reason judged acceptable
by the Event Judges. The skier must be ready to ski immediately after the decision of
the Event Judges. Should the skier not be ready or should the reason be judged not
acceptable by the Event Judges, he should be disqualified from the remainder of the event.
Rule 14.3.Trick course
A set of buoys after the deflection pulley shall establish the area of the beginning
of the trick pass (see Diagram 9). The end of the pass shall be signified by the
20-second time interval only.
Rule 14.4.Speed
The skier shall receive his choice of a constant speed through the course for each
pass. The speed in trick skiing, assuming it is held constant from the deflection
pulley before entering the course, is the skiers responsibility.
The skier shall inform the Technical Officer what speed he desires on each pass.
Rule 14.5.Start of trick pass timing
Timing for the trick pass will start:
a) at the skier's first movement towards doing a trick after reaching the position of
the first trick buoy.
b) if the skier fails to make any such movement, as the skier passes the second trick buoy.
A first movement shall be considered as any movement towards making a turn. Wrapping
the line for a turn shall not be considered such a movement in itself.
Rule 14.6.End of the trick pass
The trick pass shall end:
a)on the sound of a short, loud audible device 20 seconds after the start of the pass.
The 20-second intervals shall be timed and indicated by an automatic device.
b)when the skier falls in the course.
Rule 14.7.A fall before the pass
If a skier falls while practicing before the pass, he loses the right to that pass.
Rule 14.8.Use of a release or braking the cable
If a skier wishes to use a release he must inform the Technical Officer beforehand.
The skier uses the release entirely at his own risk.
The skier may provide an observer to instruct the Technical Officer to stop the cable.
The skier is fully responsible for any braking of the cable and no request for reride
will be granted upon premature or accidental braking.
Rule 14.9.Officials
There shall be five judges scoring tricks. Each judge shall watch and record the
tricks independently. He shall list each trick attempted by the skier and decide
with respect to each trick:
a)if it was performed according to the rules governing that trick.
b)if it was started after the beginning or completed before the end of the pass.
Rule 14.10.Communication with the Judges
Skiers in the Trick event or other persons shall not communicate with the Event Judges
between passes for the purpose of determining whether a trick or tricks attempted in
the pass were scored.
Rule 14.11.Timing the trick pass
There shall be a timer and a backup timer located at a point that will allow them to
best determine the start of the trick pass. The timer shall start the timing device
at the beginning of the trick pass as definded in Rule 14.5. At the end of 20 seconds
the audible device shall sound. Some form of backup device for the audible signal must
be provided in the event that the official device fails to operate.
The audible device to signal the end of the pass shall be located in the center of the
course, so that it is most audible for the judges.
An audible signal different from the end of pass signal indicating the start of each
pass shall be given by the timer to the judges.
In the event that there is a malfunction and the time is missed, the skier will be
given the option of a reride.
Where an automatic timing device is available which can select the median of five
separate triggering signals, the Event Judges may collectively serve as the official
timer.
Rule 14.12.Use of the video camera
The tricks shall be filmed by a video camera from a position as close as possible to
the position of the Event Judges. If more than one video camera is used, the Chief
Judges shall declare one as official prior to the event. The video film may only be
shown as an aid to the Event Judges under the following circumstances:
a)At the request of the Chief Judge or the Chief Calculator, if it is not possible
for the Calculators to obtain a majority decision as to the trick or tricks performed.
b)At the request of the Chief Judge or the Chief Calculator, if it is not possible
for the Calculators to obtain a majority decision as to whether or not credit is to
be given for a trick.
c)In circumstances which the Chief Judge regards as exceptional.. This request should
not be granted if the intention is to change a Judges's decision under Rule 14.9.
The video will only be shown at normal speed.
The audio of the video camera recorder shall pick up the sound of the audible signal,
which indicates the end of the 20 seconds.
Rule 14.13.Credit for tricks
To receive credit for any trick the skier must remain in or return to skiing position.
Only tricks listed in the rules will be scored in a competition.
A skier shall receive credit for a trick performance only if it is performed in the
order as declared on his trick list (see Rule 14.15). Tricks performed not listed or
performed in a different order than on the trick list score zero. The order shall not
be regarded as broken for the failure to perform a listed trick, the failure of the
judges to give credit for a trick performed, or the performance of one or more tricks
not listed before resuming the listed sequence. The skier may choose which pass he
wishes to perform first.
If a skier falls on his first pass, he may choose to repeat it as his second pass.
Rule 14.14.Tricks at the end of the pass
A trick not completed before the end of a pass shall not be scored.
A trick completed before the end of a pass shall not be scored if the skier ultimately
falls as a result of that trick, even if the fall is after the conclusion of the pass.
Rule 14.15.Trick lists
A list of declared tricks to be attempted by the skier shall be required from each
competitor in the trick event before the event starts. The Chief Judge and the Chief
Calculator shall determine the exact time when the list must be submitted for the
preliminary and the final rounds. The trick list shall be prepared using the official
codes shown in the table of trick values. In each declared trick pass, the skier may
list only one trick and its associated reverse, if any, on two skis and one trick and
its associated reverse, if any, on one ski under each number in the table, except that
any type of 1800 turn may be listed more than once. A contestant who fails to submit a
trick list shall be disqualified from that trick round. A skier may submit a different
trick list for the event finals if he so desires. The declared list shall be made
available to the officials at the discretion of the Chief Judge.
Rule 14.16.Calculation of the trick result
The Calculators shall receive the tabulations and, in the event of a discrepancy, shall
decide the tricks to be scored on the basis of a simple majority from among the Judges'
individual tabulations as to:
a)what trick was performed;
b)if it was performed according to the rules governing that trick; and
c)if it was started after the beginning or completed before the end of a pass; and
d)if it was declared by the skier in his submitted trick list according to Rule 14.15
If there is more than one sequence that can be scored, the sequence that gives the
maximum points shall be used.
Each trick shall be credited to the competitior with the points as given in Appendix 1
Rule 14.17.Trick descriptions
a)Except in the case of attempted side slide turns, a trick is any activity which occurs
between two hesitations. In the case of an attempted side slide, the hesitation in the
90 position is to be ignored in applying this rule. Credit may be received for performance
of only one trick and the associated reverse, if any, on one ski under each number in the
table. If this rule is violated, only the higher scoring of the repeated tricks shall be
scored.
b)An air turn not completely done in the air scores zero. Equally a water turn not
completely done on the water scores zero.
c)A reverse trick must immediately follow the basic turn in the same pass; however,
any type of 1800 turn is allowed between two such turns. The reverse shall not be
disallowed simply because it follows an attempted trick which has not been credited
or because the basic trick is a repeated trick. Reverse turns under Trick 5 are
limited to 360 but may follow a 360, 540 or 720. Reverse tricks under Trick 12 are
limited to 540 but may follow a 540 or 720. On one ski and two skis only one basic
trick and one reverse are allowed under Trick 27 and under Trick 28, but may be any
reverse trick listed, i.e. the original may be a WL5, WLL5 or a WL7, and the reverse
may be any reverse of any of the above. On one ski and two skis only one basic trick
but no reverse are allowed under Trick 13, 34, 36, 37, 38, 42, 43, 45, 46, 47 and 49.
d)Stepover line tricks are complete only when the free foot touches ski or water or
the lifted ski touches water after the turn before the next trick or the end of the pass.
The skier may not lay his leg or lifted ski across or on top of the line, the handle,
or either arm until he begins to execute the trick. The stepover and turn actions must
be simultaneous.
Immediately on completion of a FB stepover turn, the skier must have at least one arm
between his legs holding the handle.
A jump stepover 360 consists of a 180 stepover and a 180 jump combined, in either order,
all done in the air, in a continous turn. A jump stepover 540 consists of a 180 jump
stepover and a 360 jump combined, in either order, or a 180 jump stepover preceding and
followed by a 180 jump combined, all done in the air in a continous turn. A jump double
stepover 540 consists of a 180 jump stepover and a jump stepover 360 combined in either
order, all done in the air in a continous turn.
A stepover turn not performed according to the rules for a stepover but according to the
rules for a 180 or 360 surface or jump turn shall be scored zero.
Toehold stepover tricks must be a simultaneous action. The towing foot may not touch the
water during execution of the toehold stepover.
e)All side slides include a 90 turn from skiing position, a hesitation in the 90 position
and a return to the skiing position in the original direction.
f)In ski line tricks, both feet must be on the ski and pass over the line while in mid-air.
The feet may pass over the line at any point during the execution of the trick. The line
must be out of the water during the execution of the trick.
g)To receive credit for a flip, it is required that both feet must be higher than the
head and in approximately the same vertical plane at some point during the execution
of the trick. A Front Flip shall be defined as a forward somersault done in the air
in which the tail of the ski passes up and over the head as the head goes down and
forward. Both feet must be above the head and in approximately the same vertical
plane at some point during the execution of the trick. For flips with body rotation
the body rotation must be done simultaneously with the flip, not before or after. A
Flip Front-Back is not considered a 180 turn either for purposes of declared tricks
as referenced in Rule 14.15 or for reverse turns as described in Rule 14.17c). The
reverse Back Flip is defined as a Back Flip leading with the opposite shoulder and
travelling in the opposite direction (right to left vs. left to right) from the original
Back Flip. Additionally, for the WFLIPBFB, the reverse must land in the opposite wrap
or turn in the opposite direction.
Rule 14.18.Scoring
The skier's result from the final round will determine his placement in the event.
The better result obtained by the skier, in either the preliminary or the final round,
shall count towards the overall.
To be considered for placement and receive overall points, skiers must have a score of
more than 0 points.
Rule 14.19.Ties
If a tie exists for first place, it shall be run off. If a tie exists for second or
third place, placement shall be decided on the basis of the higher preliminary round
score. If a tie still exists, it shall be run off. The run off shall have a new drawing
of order. Each tying competitor shall be allowed one pass until the tie is broken.
Repeated ties shall be run off in the same manner until broken.
Rule 15.Records
Rule 15.1.What records are recognized
The IWSF shall recognize World Records for jump distances, slalom performances and trick
points for the Men's and Women's divisions. The Regions may, in addition, recognize Region
Records under the same standards provided for World Eecords. The Regions may, however,
recognize Records for divisions other than those recognized by the IWSF. The Region in
which a record may be recognized shall be determined by the nationality of the skier
rather than the location of the competition.
Rule 15.2.Competitions where records may be set
Records may be set only at competitions homologated by the IWSF, a Region, a Federation,
or the Cableski Council of the IWSF.
In any one competition, no more than three rounds are eligible for setting records. The
eligible rounds must be declared before the start of the competition.
Rule 15.3.Jump records
The longest officially authenticated distance jumped in a round of a competition shall
be a new record if it exceeds the official record performed on a date before the
competition. If the distance equals the established record, the skier will become
co-holder of the established record.
For jump records only the distance will be considered whether the performance was at a
ramp height of 1,50 m or 1,65 m for women or 1,65 m or 1,80 m for men.
Rule 15.4.Slalom records
The highest officially authenticated scoring slalom performance performed in a round
of a competition shall be a new record if it exceeds the official record performed on
a date before the competition. If the score equals the established record, the skier
will become co-holder of the established record.
Rule 15.5.Trick records
The highest officially authenticated trick result performed in a round of a competition
shall be a new record if it exceeds the official record performed on a date before the
competition. If the result equals the established record, the skier will become co-holder
of the established record.
Rule 15.6.Ties in an event
In the event of equal performances in a round of a competition, the record shall be co-held
no matter which skier may be the ultimate winner of the event.
Rule 15.7.Record forms and criteria
Specifications of equipment, courses and measuring devices shall be set by the IWSF
Record Application Forms, which must be completed and certified by the Region Cableski
Council Chairman, by the Chief Judge, by the Homologator and other required officials.
These record forms shall require that for a slalom or trick record, the performance
must be video taped.
a)Slalom. Video will be taken from the end of the slalom course centerline, starting
with 10,25 m ropelength. The five Event Judges will examine the passes to recalculate
the number of buoys.
b)Tricks. Video will be taken as per Rule 14.12. This video will be viewed in regular
speed by the Event Judges for record verification. Although the record verification
cannot change the score recorded in the competition, the score may be changed for the
record submission
In case a video measurement system is used in Jumping the homologator should send the
video tape and the gif files for control by the IWSF Cableski Council.
All videos will be sent with the record forms to the Chairman of the IWSF Cableski
Council. All submitted videos will be VHS. The format that the tape was recorded in
will be clearly marked on the tape.
Rule 15.8.Record administration
a)World Records may only be set at competitions sanctioned by the IWSF, a Region, or an
affiliated National Federation. In some instances, a Region or Federation may specifiy
specific events as record capability. In this instance, only performances from such
specified events shall be considered for World Records.
b)At competitions where World Records may be set, the Homologator shall be responsible
for supplying the Chief Judge with the technical information required by the IWSF Record
Application Form.
c)The Chief Judge shall be responsible for the completion of the required application.
The completed form shall be sent by the Chief Judge within one week of the completion
of the competition to:
- The skier's National Federation.
- The Chairman of the Region Cableski Council where the record was performed.
- The Chairman of the IWSF Cableski Council.
Under no circumstances will a record application be considered unless the appropriate
record application forms are completed and all rules conformed to within the the stated
time limits of one week (7 days)
d)Upon receipt of the form and the necessary support documentation, the Chairman of the
IWSF Cableski Council will either approve or disapprove the application and will advise
the members of the IWSF Cableski Council and the IWSF President of his decision.
e)The record will then be official, pending final ratification by the IWSF Cableski
Council and the President of the IWSF.
f)The IWSF Cableski Council and the President of the IWSF must advise the Chairman of
the IWSF Cableski Council of their ratification or disapproval within 30 days of their
receipt of the information.
g)Records shall be retified if approved by a two-thirds majority of the IWSF Cableski
Council. There shall be no proxy voting.
h)Should the Homologator and/or Chief Judge fail in the responsibilities of these duties,
sanction shall be determined and levied by the IWSF Executive Board following receipt of
a report by the Region Cableski Council Chairman.
i)In the unusual instance where a potential World Record performance occurred and it was
intentionally not applied for as a World Record, the Homologator, Chief Judge, skier, and
Federation may be subject to the IWSF Constitution.
Rule 16.Homologation Guidelines
Rule 16.1.General
The surveying instrument must have an accuracy of 20 seconds or better. All slalom and
jump courses shall be checked with that instrument.
Rule 16.2.Jump
In case of the use of the Johnson system:
a)Protractors should be in degrees with a gradiation of 0,2 degrees. Minimum radius of
the protractor shall be 25 cm.
b)The maximum difference of readings between top and bottom stations on a fixed sighting
point (on land) shall not exceed 0,1 degree. This is to be checked at several points
through the range and include the other stations.
c)Angles may be called in to 0,1 degree of accuracy.
d)A recommended check is to sight the 6th slalom buoy for a small triangle and check
against actual distance.
Rule 16.3.Slalom
All skier buoys and end gates must be measured (diameter and height) for
record submission.
Rule 17.Additional Rules
Diagram 1 / Measuring the height
Appendix 3.Calculation of Francor Tables Important note: Overall points must be rounded to one decimal place. P = Overall points S = either jump distance in meter or number of buoys counted from 34 km/h for women, 37 km/h for men or trick points. W = current World Record Score Formula S <= (Wx0,80) P = (S/W)x(700/0,80) (Wx0,80) < S <= (Wx0,88) P = 700 + ((S/W)-0,80)x(100/0,08) (Wx0,88) < S <= (Wx0,95) P = 800 + ((S/W)-0,88)x(100/0,07) (Wx0,95) < S P = 900 + ((S/W)-0,95)x(100/0,05) Additional calculation for Slalom if first pass is not perfect: a)Let PP be the overall points, rounded to one decimal place, corresponding to a perfect pass at the minimum starting pass (using the above formula). b)Let B be the number of buoys scored by the skier (between 0 and 6). c)Calculate P = (B/6)xPP and round P to one decimal place.Appendix 4. Computer Benchmark for computed distances
Distance AB = BC = 25 m. ABC is a straigth line. Jump position relative to A: 10 m back, 40 m out. Jump is exactly parallel to ABC. Note: The example shown is theoretical and does not imply that jump setups must conform to this diagram. For jump distances and record to be certified, the jump meters must be set up so that the angles read from each station, using the offical protractors, to the sighting mark produce an error triangle with an inscribed circle diameter of less than or equal to 15 cm. Note: This does not apply if an alternative measurement system has been approved for use. For the setup shown, some examples might be as follows: Angle A Angle B Angle C X Y Triangle Result 75,9638 48,8141 33,6901 10,0 40,0 0,00 OK 76,0 48,8 33,7 9,99 39,99 0,031 OK 75,9 48,9 33,6 9,94 39,93 0,169 BAD Note: X and Y positions are rounded to 0,01 m. To verify that a computer program, using the Johnson system, is computing distances according to the IWSF rules, the operator must show that it produces identical results with the test cases that follows based on the setup given in the diagram. Note that triangle size is rounded to 0,001 m. A B C Upper Lower Upper Lower Upper Lower Distance Triangle 1. 136,6 136,6 106,8 106,8 65,6 65,6 45,5 0,0 2. 136,0 136,0 106,0 106,0 67,0 67,0 45,5 0,56 3. 136,9569136,2431107,2972106,302866,073 65,127 45,5 0,0 4. 136,96 136,24 107,3 106,3 66,1 65,1 45,5 0,0 5. 136,6 137,32 106,8 107,8 66,6 65,6 45,5 0,0 6. 137,751 137,751 106,8 106,8 65,6 65,6 45,7 0,6 7. 137,753 137,753 106,8 106,8 65,6 65,6 45,3 0,601 8. 136,6 135,8 106,8 106,8 65,6 65,6 45,5 0,211 9. 136,7963136,7963106,8 106,8 65,6 65,6 45,5 0,103 10. 136,7964136,7964106,8 106,8 65,6 65,6 45,6 0,104 Case 7. Possible reride! Longest Vertex 46,1 Shortest Vertex 45,3 Appendix 5.Jump diagramsDiagram 4 / Jump Course
Instructions: For any particular ramp setting, a combination of HEIGHT at the top edge and LENGTH out of the water enclosed within the solid line is allowable. A combination that lies on the dotted line is the most desirable.
Appendix 6. Slalom diagrams
Diagram 7 / Slalom Course
Diagram 9 / Trick Course
