Section 1: Introduction
Competitive water skiing is governed internationally by the International Waterski & Wakeboard Federation (IWWF), headquartered in Switzerland, which administers the sport's traditional "three-event" discipline — Slalom, Tricks, and Jump — through its Waterski Council. The rules in this file are drawn from the IWWF World Waterski Rules 2026, the governing body's official technical rulebook for the 2026 competitive season, which supersedes the 2025 edition and applies to all IWWF-sanctioned tournaments, including Regional and World Championships.
In three-event competition, a skier is towed behind a specialized inboard tow boat and competes across all three disciplines during a tournament, with results combined into an overall placement. Slalom tests a skier's ability to round a set course of buoys at increasing boat speed and decreasing rope length; Tricks (sometimes called Figure skiing) rewards technical maneuvers performed within a fixed time; and Jump rewards maximum distance achieved off a fixed ramp. Skiers may also enter individual events rather than the full three-event combination.
The IWWF also governs closely related disciplines — Wakeboard, Cableski, Cable Wakeboard, Barefoot Skiing, Show Ski, Racing, Wakesurfing, and Disabled/Para Water Ski — each published under its own separate rulebook. This document addresses only the towed "classic" three-event Waterski discipline.
Section 2: Equipment
Skis. Competitors use event-specific skis. Slalom is skied on a single mono-ski with a fin and boot bindings; Tricks is contested on a shorter, finless (or minimal-fin) trick ski that allows the skier to spin and surface-slide; Jump uses a wider, longer pair (or single) of skis designed for stability and lift at high speed off the ramp. Equipment must conform to the general construction limits set out in the rulebook's equipment provisions.
Tow rope and handle. A tournament tow rope is a mandatory, standardized item: the regular (full) competition length is 18.25 metres (59.9 ft) measured from the boat pylon to the ski handle. For Slalom, ropes are fitted with pre-spliced loops permitting rapid shortening through the official progression — 18.25 m, 16.00 m, 14.25 m, 13.00 m, 12.00 m, 11.25 m, 10.75 m, 10.25 m, and 9.75 m — as a skier successfully completes a pass.
Tow boat. An IWWF-approved inboard tow boat with an approved speed-control/speedometer system is required to pull the skier at the boat speeds mandated for each event and division. The boat's pylon (tow point) height and wake characteristics are subject to approval to ensure a consistent tow for competitors.
Helmet. A suitable helmet is mandatory for competitors in the Jump event, given the high speeds and fall risk associated with ramp take-offs and landings.
Buoyancy vest (jacket). A properly fitted buoyancy/flotation vest is required safety equipment for all competitors across Slalom, Tricks, and Jump.
Section 3: Playing Area
Slalom course. The official slalom course runs 259 metres (850 ft) from entry gate to exit gate, with the two lines of boat guides spaced roughly 23.5 metres (77 ft) apart. Six turn buoys are set alternately along the course, each positioned 11.5 metres (37 ft 8 in) from the centreline of the boat lane. Entry and exit gates each consist of a pair of gate buoys spaced 2.5 metres (8 ft 2 in) apart, straddling the centreline, which the skier must pass through at both the start and end of a scoring pass.
Jump course and ramp. The jump ramp surface must be between 3.70 m and 4.30 m wide at every point along its length (4.20–4.25 m recommended), with an overall ramp length of approximately 6.60 m (21.6 ft). Ramp height (the height of the take-off edge above the water) is adjustable and set according to division — commonly around 1.5 m for standard divisions, up to 1.6 m for elite women and 1.8 m for elite men. Side aprons run the full length of the ramp on both sides and must extend at least 15 cm (6 in) below the waterline when the ramp is raised to competition height, guiding the boat and skier into a consistent approach lane.
Tricks course. The tricks pass zone is marked by a pair of course buoys set approximately 230 metres apart on open water, defining the area within which each timed pass must be completed.
All courses must be sited on a body of water approved by tournament officials for adequate length, width, and depth, and must be kept clear of other traffic during competition.
Section 4: Players & Officials
Competitors ("skiers") are entered individually and are typically grouped into age and skill divisions, with separate men's and women's classifications and boat-speed/rope-length or ramp-speed standards for each. A sanctioned tournament requires a boat driver approved to drive at competition tow speeds, an observer/spotter in the boat who watches the skier and signals falls or course infractions, and a panel of judges.
Judging is event-specific: Slalom and Jump results are primarily determined by course officials and measurement/timing equipment recording buoy counts, rope length, boat speed, and jump distance, while Tricks requires a panel of trick judges (commonly a panel of five) who independently identify and score each maneuver a skier performs during a pass, with scores reconciled according to the rulebook's judging procedures.
A Chief Judge oversees each event and resolves disputes over calls made by the boat driver, observer, or trick judges, applying the interpretations set out in the IWWF World Waterski Rules 2026.
Section 5: Rules of Play
Slalom. The skier makes a series of passes through the course, starting at a set boat speed with the full 18.25 m rope. If the skier successfully rounds all six turn buoys on a pass without falling or missing a buoy, boat speed is increased in the next pass until the maximum speed for that division is reached (55 km/h / 34 mph for women; 58 km/h / 36 mph for men, in senior/elite divisions). Once maximum speed is reached, further successful passes are rewarded by shortening the rope through the official progression instead of increasing speed. The skier's run ends on a fall, a missed buoy, or failure to complete the course, and is scored on the number of buoys successfully rounded at the boat speed/rope length combination reached.
Tricks. Each competitor receives two passes of 20 seconds each through the tricks course, typically one performed on two skis or with hand-hold variations and one on a single ski, during which the skier attempts a freely chosen sequence of tricks (turns, flips, wake crossings, and toe-hold maneuvers). Each trick has a predetermined point value set out in the rulebook's trick tables; a trick may only be scored once per competitor across both passes, and repeated tricks score zero on subsequent attempts.
Jump. The skier is towed at the maximum boat speed permitted for their division (up to 57 km/h / 35 mph for elite men and up to 54 km/h / 33.5 mph for elite women) and directs the ski(s) up the ramp, aiming to fly the maximum horizontal distance before landing and riding away in control on the water. A jump only counts if the skier maintains control and does not fall before crossing the finish/riding-away point; distance is measured from the end of the ramp to the point of landing.
Skiers compete across all three events in three-event (combined) competition, or may enter one or two individual events depending on the tournament format specified for that competition.
Section 6: Scoring
Slalom scoring. A skier's score is the number of buoys successfully rounded at the boat speed and rope length in effect when the run ends, expressed under the sport's buoy-count system (e.g., a fall on the second buoy of a pass at a given rope length yields a score reflecting the buoy count reached plus any partial-buoy value for a wake crossing beyond the last completed buoy).
Tricks scoring. A skier's total score is the sum of the point values of every successfully completed, non-repeated trick across both 20-second passes, as confirmed by the trick judging panel. The skier with the highest combined point total is ranked first.
Jump scoring. A skier's score is the measured distance of their longest successful jump (typically the best of three jump attempts), expressed in metres/feet, provided the landing and ride-away meet the control requirements defined in the rulebook.
Overall (three-event) scoring. Where a tournament runs a combined event, each competitor's raw result in Slalom, Tricks, and Jump is converted to a standardized point score under the IWWF scoring tables, and the three event scores are added together; the skier with the highest combined point total is the overall winner. Ties are resolved according to the tie-break procedures set out in the current rulebook.
Section 7: Violations & Penalties
Slalom violations. A run ends immediately (with the score fixed at the point of infraction) if the skier falls, fails to go around a required turn buoy on the correct side of the boat's course, releases the handle deliberately, or fails to cross the course through both the entry and exit gates.
Tricks violations. A trick attempted but not landed under control, or performed outside the marked pass zone or time limit, scores zero for that attempt. Trick calls disputed by the skier or coach may be referred to the Chief Judge for review under the tournament's protest procedure.
Jump violations. A jump is disallowed (scored as a "no jump" or foul) if the skier does not maintain control through the landing and ride-away, deviates outside the approved ramp approach lane in a manner deemed unsafe or advantageous, or if equipment or course conditions are found to be non-compliant at the time of the jump.
General conduct. Unsportsmanlike conduct, equipment found not to conform to the rulebook's specifications, or interference with another competitor's run may result in disqualification from the event or, in serious cases, from the tournament, at the discretion of the Chief Judge or Tournament Committee.
Section 8: Safety Considerations
All competitors are required to wear a properly fitted buoyancy vest while competing, and a helmet is mandatory in the Jump event given the speeds involved and the risk of hard falls on landing. A boat observer/spotter and the boat driver are responsible for monitoring the skier's safety throughout a pass or jump attempt, and tournaments must have a rescue/safety boat or swimmer available to respond quickly to falls, particularly in the Jump event.
Any competitor who sustains a head injury or suspicious fall is subject to assessment under the IWWF On-Water Concussion Recognition Tool (OWCRT) before being permitted to continue competing, reflecting the federation's head-injury management protocol for high-speed disciplines such as Jump.
Course and ramp equipment, including the jump ramp's side aprons and boat guides, must be inspected and approved before competition to ensure they meet the rulebook's construction and safety tolerances, and organizers are responsible for ensuring the body of water used is free of other traffic and hazards during active competition.
