Kiteboarding

Late 20th century

In October 1977 Gijsbertus Adrianus Panhuise (Netherlands) received the first patent^[3] for KiteSurfing. The patent covers, specifically, a water sport using a floating board of a surfboard type where a pilot standing up on it is pulled by a wind-catching device of a parachute type tied to his harness on a trapeze-type belt. This patent did not result in any commercial interest.

Through the 1980s, there were occasionally successful attempts to combine kites with canoes, ice skates, snow skis,^[4] water skis and roller skates.

Throughout the 1970s and early 1980s, Dieter Strasilla from Germany developed parachute-skiing and later perfected a kite-skiing system using self-made paragliders and a ball-socket swivel allowing the pilot to sail upwind and uphill but also to take off into the air at will.^[5] Strasilla and his Swiss friend Andrea Kuhn also used this invention in combination with surfboards and snowboards, grasskies, and self-made buggies.^[6] One of his patents describes in 1979 the first use of an inflatable kite design for kitesurfing.^[7]

Two brothers, Bruno Legaignoux and Dominique Legaignoux, from the Atlantic coast of France, developed kites for kitesurfing in the late 1970s and early 1980s and patented an inflatable kite design in November 1987,^[8] a design that has been used by companies to develop their own products.

Bill Roeseler, a Boeing aerodynamicist, and his son Cory Roeseler patented the "KiteSki" system, which consisted of water skis powered by a two-line, delta style kite, controlled via a bar-mounted combined winch/brake. The KiteSki was commercially available in 1994. The kite had a rudimentary water launch capability and could go upwind. In 1995, Cory Roeseler visited Peter Lynn at New Zealand's Lake Clearwater in the Ashburton Alpine Lakes area, demonstrating the speed, balance, and upwind angle on his 'ski'. In the late 1990s, Cory's ski evolved into a single board similar to a surfboard.^[9][10]

The development of modern-day kitesurfing by the Roeselers in the United States and the Legaignoux in France was carried on in parallel with that of buggying.

In 1996, Laird Hamilton and Manu Bertin were instrumental in demonstrating and popularising kitesurfing off the coast of Maui, while, in Florida, Raphaël Baruch changed the name of the sport from flysurfing to kitesurfing by starting and promoting the first commercial brand of the industry: "Kitesurf".

In 1997, the Legaignoux brothers developed and sold the breakthrough "Wipika" kite design that had a structure of preformed inflatable tubes and a simple bridle system to the wingtips, both of which greatly assisted water re-launch. Bruno Legaignoux continued to improve kite designs, including developing the bow kite design, which has been licensed to many kite manufacturers.

In 1997, specialized kiteboards were developed by Raphaël Salles and Laurent Ness. By the end of 1998 kitesurfing had become an extreme sport, distributed and taught through shops and schools worldwide. The first competition was held on Maui in September 1998 and was won by Flash Austin.^[9]

Starting in 1999, kitesurfing became a mainstream sport with the entry of key windsurfing manufacturers, namely Robby Naish and Neil Pryde. Single direction boards derived from windsurfing and surfing designs became the dominant form of kiteboard.

21st century

In 2000, a new freestyle competition, sponsored by Red Bull was launched in Maui. The competition, named Red Bull King of the Air, judged riders on height, versatility, and style. The competition is still held annually in Cape Town, South Africa.^[11]

From 2001 onward, twin-tip bi-directional boards became more popular for most flat water riders, with directional boards still in use for surf conditions.

In May 2012, the course racing style of kitesurfing was announced as a sport for the 2016 Rio Olympics,^[12] replacing windsurfing. However, after a vote by the General Assembly of the ISAF in November 2012, the RSX windsurfer was reinstated for both Men and Women, resulting in kitesurfing being left out.^[13] The ISAF mid-year meeting of May 2013 proposed seeking an eleventh medal to include kitesurfing in 2020^[14] without making any changes to existing events.

In 2014, course-racing kiteboarding was included in the ISAF World Sailing World Cup program. In November 2014, 20 athletes attended the final competition in Abu Dhabi. The first place among women was taken by Elena Kalinina, while the men's champion was Great Britain's Oliver Bridge.

In 2015, Elena Kalinina won again and received the title of the world champion, ahead of Great Britain's Steph Bridge and the Russian Anastasia Akopova. The world champion among men was Maxime Nocher from Monaco, making him the youngest world champion, ahead of Oliver Bridge and Polish native Blazek Ozog.

Kitesurfing was named an official event at the 2018 Summer Youth Olympics in Buenos Aires.^[15]

Mixed Kite - Formula Kite was chosen by World Sailing for inclusion in the 2024 Summer Olympics.^[16][17]

Jump records (height, length, time)

On August 8, 2023 South African athlete Joshua Emanuel ascended 36.2 meters in the North Sea near Hanstholm, riding the CORE XR Pro 7m kite.^[18] The previous record holder for the height of a single jump was Jamie Overbeek at 35.3m.^[19] Nick Jacobsen achieved a previous world record for the highest kite jump, measured by WOO Sports on February 19, 2017 in Cape Town, South Africa, during a session with 40-knot winds. Jacobsen's jump reached 28.6 meters high, with an airtime of 8.5 seconds.^[20] The record has been broken several times since then, and WOO Sports maintains jump-related leaderboards in different categories (airtime, height, etc.) based on the data recorded and uploaded by its users.

Jesse Richman holds the record for hangtime at 22 seconds, set at Crissy Field in San Francisco, California. Airton Cozzolino holds the record for strapless hangtime at 19 seconds.^[21]

Speed records

French kitesurfer Sébastien Cattelan ^[fr] became the first sailor to break the 50 knots barrier by reaching 50.26 knots on 3 October 2008 at the Lüderitz Speed Challenge in Namibia.^[22] On 4 October, Alex Caizergues ^[fr] (also of France) broke this record with a 50.57 knots run. Similar speeds have been reached in the same location by windsurfers Anders Bringdal and Antoine Albeau, respectively 50.46 and 50.59 knots. These speeds are verified, but are still subject to ratification by the World Sailing Speed Record Council. Earlier in the event, on 19 September, American Rob Douglas reached 49.84 knots (92.30 km/h), becoming the first kitesurfer to establish an outright world record in speed sailing. Previously the record was held only by sailboats or windsurfers. Douglas also became the world's third over-50 knots sailor, when on 8 October he made a 50.54 knots (93.60 km/h) run.

On 14 November 2009, Alex Caizergues completed another run of 50.98 knots in Namibia.

October 2010, Rob Douglas became the outright record holder for the short distance 500 meters with 55.65 knots.^[23] Sébastien Cattelan became the record holder of France and Europe with 55.49 and was the first rider to reach 55 knots.^[24]

On 13 November 2017, French rider Alex Caizergues ^[fr] became the new world speed record holder in France (Salin-de-Giraud) reaching 57.97 knots or 107.36 km/h. ^[25]

Largest kitesurfing wave

While Nuno "Stru" Figueiredo held the record at 62-foot (19-meter) from a 2018 ride at Praia do Norte in Nazaré, Portugal, Patri McLaughlin set a new Guinness World Record on January 22, 2023 (72 feet and four inches (22.04 meters)).^[26]

Long distance

Notable journeys

Louis Tapper completed the longest recorded solo kite journey, completing 2000 km between Salvador and Sao Luis, Brazil. The journey was completed between July/August 2010 and took over 24 days of kitesurfing. This trip is also the longest solo journey, completed without a support crew, using one kite and a 35-liter backpack .^[36]

The previous longest recorded kite journey was by Eric Gramond who completed a 13-day trip of 1450 km along the coast of Brazil.^[37]

Bering Strait crossing

Constantin Bisanz, a 41-year-old Austrian, crossed a 80 km (50 mi) stretch of the Bering Strait, embarking from Wales, Alaska, US on 12 August 2011 at 04:00, and arriving in easternmost Russia two hours later, after which he returned by boat to Alaska. It occurred after 2 previously failed attempts, the first of which was on 28 July 2011, in which an incident occurred where he found himself floating in 36 °F water with no board, kite, or GPS unit for 1 hour before being rescued. On his second attempt on 2 August he and two friends sailed half the distance before turning around due to poor wind conditions.^[38]

Transatlantic crossing

A team of six kitesurfers, Filippo van Hellenberg Hubar, Eric Pequeno, Max Blom, Camilla Ringvold, Ike Frans, and Dennis Gijsbers crossed the Atlantic Ocean, from the Canary Islands to the Turks and Caicos Islands a distance of about 5,600 km (3,500 mi), from 20 November 2013, to 17 December 2013.^[39] Each of the six spent four hours each day surfing, broken into two sessions of two hours each, one during the day, and the other during the night.^[39]

Wind strength and kite sizes

Kitesurfers change kite size and/or line length depending on wind strength — stronger winds call for a smaller kite to prevent overpower situations. Kitesurfers determine the wind strength using either an anemometer or, more typically, visual clues as shown in the Beaufort scale. Modern kites dedicated to kitesurfing provide a "depower" option to reduce the power in the kite. By using depower, the kite's angle of attack to the wind is reduced, thereby catching less wind in the kite and reducing the pull.

Bow kites have a wider wind range than C-kites, so two kite sizes (such as 7 m² and 12 m²) could form an effective quiver for winds ranging from 10 to 30+ knots for a 75 kg (165 lb) rider.^[51]

Wind direction and speed

Cross-shore and cross-onshore winds are the best for unassisted kiteboarding. Direct onshore winds carry the risk of being thrown onto land or stuck in shallows. Direct offshore winds pose the danger of being blown away from the shore in the event of equipment failure or loss of control. However offshore winds can be quite suitable in confined waters, like in a lake or estuary, or when a safety boat is assisting.

The kiter must maintain a clear perception of the wind direction but also of the wind speed. The Beaufort scale^[52] is of great assistance in helping users assess the situation. A range of wind up to 33 knots covers the conditions for a safe practice for an experienced rider. A less experienced one should avoid riding with more than 15 knots. Most twintip boards and inflatable kites would be barely rideable below 11 knots, therefore for most cases a user should focus on the winds classified as moderate up to strong.

Apparent wind

Even if there is no wind blowing, a kiter can act on the kite lines and force it to move, and then, like with a row, it generates some force resulting from the incidence of the air into the kite's surface. In a gentle breeze, if the user action increases the air speed around the kite 10 times, the generated force increases 100 times, since the wind force acting on a kite is proportional to the square of the wind speed acting on it.^[53] Thus the relevant notion of apparent wind, which is the actual wind acting on the moving kite, sail or wing.

The apparent wind is measured taking the moving kite as the reference frame, therefore its other name as relative wind. By opposition, the wind measured relatively to the ground is called true wind.

While the other wind sports can generate considerable apparent wind, their wind forces are limited by the movement of the user platform, since it is attached more or less rigidly to the wing or sail. In this aspect, kiteboarding seems unique among other wind sports, since it allows the user to generate apparent wind independently of the movement of the user platform, the board. For instance, in the initiating kiteboard technic called waterstart, while the user prepares to start in the water, the kite is sent aggressively, generating a propulsive impulse. Then the resulting movement of the board increases tension on the kite lines, which the user controls to manage the riding speed and to navigate at will. The composition of the movements of both the kite and the board, offer the user a great deal of navigation flexibility and creativity, including the possibility to jump significantly, making this a true 3-dimensional sport.

Wind power, control lines and kite paths

In some way all wind sports harvest the energy of the wind. The greater the volume of the atmosphere available to be harvested by the sails, the bigger the available energy to propel the users. As a taller sailing ship harvests more energy from the wind, so does a kiteboarder with longer lines. Compared to a kiteboarder, a windsurfer can extract a higher ratio of wind energy from the available atmosphere volume, but since such volume is much smaller, the resulting energy could be much less than in kiteboarding.

To increase the power, the kiteboarder typically navigates the kite along an S-shape path, increasing the harvesting of energy since it is traversing most of the atmosphere volume around him. This S-shaped movement is most common when the kiters need a moderate improvement of power. If the user needs an intense improvement of power, it loops the kite. Such loops are stronger when the loop radius is large, and traverses a larger atmosphere volume. The kite loop is an advanced practice, and its power can be quite dangerous. With most modern kites and control bars, to end a kite loop the user just pushes away or releases the bar.

Regarding the length of the lines connecting the kite to the user, longer lines allow the user to harvest wind energy in a larger volume. Due to the boundary layer effect^[54] longer lines also allow to harvest stronger winds higher up in the atmosphere. But longer lines make the kite slower to respond to the user actions on the control bar, since the lines form a more pronounced spring-like catenary. Therefore, kitesurfers, who need to react fast to incoming waves, tend to use shorter lines than the other kiters. For safety reasons the newcomers to the sport are usually trained with short lines, limiting the power build up.

Wind window

The wind window is the 180 degree arc of the sky downwind of the rider in which the kite can be flown - roughly one fourth of a sphere's surface, which radius is the length of the lines. It is the atmosphere volume in which the kiter can navigate the kite to harvest wind energy.

If the rider is facing downwind on a surface, like the ocean, the wind window covers roughly all the area the rider can see, from the rider's peripheral vision on one side, along the horizon to the other side, and then directly overhead back to the first side. If the rider somehow puts the kite out of the window — for example, by riding downwind too quickly and sending the kite directly overhead and behind, the kite stalls and often falls out of the sky.

The eventual inefficiency of the kite can obviate for it to reach the edge of the wind window. In such cases the magnitude of the wind window can be reduced to as little as a 120 degree arc, instead of the expected 180 degree.

The wind window is centered in the user location. Since the user is carried by the board, the wind window is affected by the movement of the board. Therefore, the wind window rotates as the board moves and generates apparent wind into itself. For instance, when the kiter navigates perpendicular to the true wind at a speed equal to the true wind's, the apparent wind felt on the board increases 42% compared to the true wind, but rotates 45º against the movement. With such rotation, even if the user keeps the kite at the edge of the wind window for trying to keep it pulling in the travelling direction, the kite lines would be at an angle of 45º downwind of the board path, forcing the kiter to edge the board to oppose its tendency to slip downwind. Such board edging is an indispensable technique for navigating upwind, and can be made at a much more extreme angle to the kite lines, almost up to 90º.

The wind window rotation degrades the performance when riding fast in a path upwind. To minimize the wind window rotation and sail upwind as much as possible, the kiter should keep the slowest board speed without sinking the board by lack of hydrodynamic lift. High flotation boards like surfboards are preferable in such cases. Also, keeping the kite high in window, pulling up the user and the board, is quite efficient in coping both with the reduced hydrodynamic lift of the board and with the intended reduction of the board speed.

Arbitrary atmosphere volume swept by the kite

The kite is a peculiar sail because it can be swept arbitrarily through the atmosphere, usually in specific patterns, so the user can harvest a significant amount of wind energy, much larger than with an equivalent sail fixed to a mast.

The kite and the lines are light, in the range between 2 and 4 kg, but the aerodynamic drag can be significant since the kite can travel much faster than a windsurf sail. Therefore, part of the energy harvested is spent in the movement of the kite itself, but the remainder propels the user and the board.

For instance, a user riding toward the beach raises the kite to slow it down and convert traction into lift. Then, instead of speed he feels an increase of the force upward, necessary to keep himself above the breaking waves.

Another specific advantage of the kite being able to be swept at will, is that the user can take advantage of the atmosphere boundary layer, either rising the kite to harvest the stronger winds blowing in the higher zone of the wind window, or during overpowering gusts he can drive the kite low, skimming the water near the edge of the wind window.

Air temperature and humidity

Seasoned kiteboarders frequently attribute to moist and hotter air a notable reduction in kite performance. In fact the lift force of a kite is proportional to the air density. Since both the temperature and the relative humidity are important detrimental factors in the air density, the kiters subjective valuation is correct.

In the range between 10 °C and 40 °C a kite loses approximately 0.4% of lift per degree Celsius. It means that a kiter practicing one given day in the Baltic, and then travelling to the Mediterranean, could experience 10% less pull using the same kite at the same wind speed.

Power kites

A power kite is available in two major forms: leading edge inflatables and foil kites.

Leading edge inflatables

Leading edge inflatable kites, known also as inflatables, LEI kites, are typically made from ripstop polyester with an inflatable plastic bladder that spans the front edge of the kite with separate smaller bladders that are perpendicular to the main bladder to form the chord or foil of the kite.^[56] The inflated bladders give the kite its shape and also keep the kite floating once dropped in the water. LEIs are the most popular choice among kitesurfers thanks to their quicker and more direct response to the rider's inputs, easy relaunchability if crashed into the water and resilient nature. If an LEI kite hits the water or ground too hard or is subjected to substantial wave activity, bladders can burst or it can be torn apart.

In 2005, Bow kites (also known as flat LEI kites) were developed with features including a concave trailing edge, a shallower arc in planform, and a distinctive bridle with multiple attachment points along the leading edge. These features allow the kite's angle of attack to be altered more and thus adjust the amount of power being generated to a much greater degree than previous LEIs. These kites can be fully depowered, which is a significant safety feature. They can also cover a wider wind range than a comparable C-shaped kite. The ability to adjust the angle of attack also makes them easier to re-launch when lying front first on the water. Bow kites are popular with riders from beginner to advanced levels. Most LEI kite manufacturers developed a variation of the bow kite by 2006.^[57] Bow kites with a straight trailing edge are named ´delta´ kites, given their triangular outline.

Early bow kites had some disadvantages compared to classic LEI kites:

• They can become inverted and then not fly properly
• They can be twitchy and not as stable
• Heavier bar pressure makes them more tiring to fly
• Lack of "sled boosting" effect when jumping^[58]

In 2006, second generation flat LEI kites were developed, combining near total depower and easy, safe relaunch with higher performance, no performance penalties, and reduced bar pressure. Called Hybrid or SLE kites (Supported Leading Edge), these kites are suitable for both beginners and experts.

In 2008, Naish introduced another kite design, with their "Sigma Series" of kites. These kites are a SLE design and feature a unique "bird in flight" shape with the center of the kite swept back to put much of the sail area behind the tow point, which Naish claims has multiple benefits.

In 2009, the performance revolution shows no sign of slowing. Bridled designs feel more like C kites, and five-line hybrids have better depower capability than ever before.^[59] There are more than thirty companies manufacturing Leading edge inflatable kites. The delta-kites are growing in popularity since 2008 with around 12 companies offering delta-kites since 2008/2009.

Between 2009 and 2013 kite technology has continued to grow. Kites have become lighter, more durable, much easier to launch and safer. Manufacturers have continued to add new safety features. This has resulted in a growing number of new riders, both younger and older. In 2013, there are at least 20 "major" kite manufacturers, each with multiple models available. Many of the manufacturers are on their third or fourth generation of kites.^[60]

Foil kites

Foil kites are also mostly fabric (ripstop nylon) with air pockets (air cells) to provide it with lift and a fixed bridle to maintain the kite's arc-shape, similar to a paraglider. Foil kites have the advantage of not needing to have bladders manually inflated, a process which, with an LEI, can take up to ten minutes. Foil kites are designed with either an open or closed cell configuration.

Open Cell

Open cell foils rely on a constant airflow against the inlet valves to stay inflated, but are generally impossible to relaunch if they hit the water, because they have no means of avoiding deflation, and quickly become soaked.

Closed Cell

Closed cell foils are almost identical to open cell foils except they are equipped with inlet valves to hold air in the chambers, thus keeping the kite inflated (or, at least, making the deflation extremely slow) even once in the water. Water relaunches with closed cell foil kites are simpler; a steady tug on the power lines typically allows them to take off again. An example for a closed cell kite is the Arc Kite.

Other equipment

• Flying lines are made of a strong material such as ultra-high-molecular-weight polyethylene, to handle the dynamic load in unpredictable wind while maintaining a small cross-sectional profile to minimize drag. They come in lengths generally between seven and thirty-three meters. Experimentation with line lengths is common in kiteboarding. The lines attach the rider's control bar to the kite using attachment cords on the kite edges or its bridle. Most power kites use a 3, 4 or 5-line configuration. Most control bars have 4 lines, 2 for most of the propulsive power and 2 for steering and for control of the angle of attack. The 5th line is used to aid in re-launching or to further adjustment of the kite's angle of attack, mostly in C-kites.
• The control bar is a solid metal or composite bar that attaches to the kite via the lines. The rider holds on to this bar and controls the kite by pulling at its ends, causing the kite to rotate clockwise or counter-clockwise like a bicycle. Typically a chicken loop from the control bar is attached to a latch or hook on a spreader bar on the rider's harness. Most bars also provide a quick-release safety-system and a control strap to adjust the kite's minimum angle of attack. Kite control bars, while lightweight and strong, are usually heavier than water; "bar floats" made of foam may be fixed to the lines right above the harness to keep the bar from sinking if lost in the water. Control bars can be specific to a particular kite type and size and not suitable for use with different kite types.
• A kite harness comes in seat (with leg loops), waist, or vest types. The harness together with a spreader bar attaches the rider to the control bar. The harness reduces the strain of the kite's pull from the rider's arms, spreading it across part of the rider's body. This allows the rider to perform jumps and other tricks while remaining attached to the kite via the control bar. Waist harnesses are the most popular harnesses among advanced riders, although seat harnesses make it possible to kitesurf with less effort from the rider, and vest harnesses provide both flotation and impact protection. Kite harnesses resemble windsurfing harnesses, but with different construction; a windsurfing harness is likely to fail when used for kiteboarding.

• Kiteboard, a small composite, wooden, or foam board. There are now several types of kiteboards: directional surf-style boards, wakeboard-style boards, hybrids that can go in either direction but are built to operate better in one of them, and skim-type boards. Some riders also use standard surfboards, or even long boards, although without foot straps much of the high-jump capability of a kite is lost. Twin tip boards are the easiest to learn on and are by far the most popular. A new trend is kitesurfing with hydrofoil boards, which is difficult but opens new horizons to the riders by allowing them to ride in low winds. The boards generally come with sandal-type footstraps that allow the rider to attach and detach from the board easily; this is required for doing board-off tricks and jumps. Bindings are used mainly by the wakestyle riders wishing to replicate wakeboarding tricks such as KGBs and other pop initiated tricks. Kiteboards come in shapes and sizes to suit the rider's skill level, riding style, wind and water conditions.

• A wetsuit is often worn by kitesurfers, except in warmer conditions with light winds. When kitesurfing in strong winds, body heat loss is reduced by wearing a wetsuit. A "shortie" is worn to protect the torso only, and a full suit is used for protection against cool conditions, from marine life such as jellyfish, and also from abrasions if the rider is dragged by the kite. Neoprene boots are required if the beach has much shellfish or hard rocks. Dry suits are also used to kitesurf in cold conditions in winter.
• A safety hook knife is considered required equipment. The corrosion resistant stainless steel blade is partially protected by a curved plastic hook. It can be used to cut entangled or snagged kite lines, or to release the kite if the safety release system fails. Some kitesurfing harnesses are equipped with a small pocket for the knife.
• A helmet is often worn by kitesurfers to protect the head from blunt trauma. Helmets prevent head lacerations, and can also reduce the severity of impact injuries to the head, as well as compression injuries to the neck and spine.
• A personal flotation device or PFD may be required if the kitesurfer is using a boat or personal water craft for support. It is also recommended for kitesurfing in deep water in case the kitesurfer becomes disabled and must wait for rescue.
• An impact vest provides some protection against impacts to the torso area. They also provide some flotation and preclude the harness to climb the chest and hurt the ribs, during high power maneuvers.
• A board leash that attaches the board to the kitesurfer's leg or harness is used by some riders. However, many kitesurfing schools discourage the use of board leashes due to the risk of recoil, where the leash can yank the board to impact the rider, which can result in serious injury or even death. Generally, kitesurfers that use a board leash also wear a helmet to help protect against this.
• Signaling devices are useful if the kitesurfer needs to be rescued. This may be as simple as a whistle attached to the knife, or retro-reflective tape applied to the helmet. Some kitesurfers carry a mobile phone or two-way radio in a waterproof pouch to use in an emergency. A small Emergency Position-Indicating Radio Beacon (EPIRB) can be carried and activated to send out a distress signal.
• A buddy is important to help with launching and retrieving the kite, and to assist in an emergency.^[61]
• A GPS can be used to measure distance travelled, tracks and speed during a session.^[62]
• Poncho towels and changing robes are commonly used to dry off and get changed into and out of a wetsuit or swimwear waterside. Poncho towels are more commonly used in warmer weather, whereas changing robes typically have a waterproof shell and provide more insulation for colder temperatures.

Weather

Weather forecasting and awareness is the principal factor to safe kiteboarding. Lack of weather awareness and understanding the figures is frequent, but avoiding weather problems is possible.^[65] Choice of inappropriate locations for kiteboarding where the wind passes over land creating wind shadow, rotor with pronounced gusts and lulls has also factored in many accidents.^[66] Paying attention to the weather and staying within the limits of the rider's ability provides the safest experience.^[67][68] Kitesurfing close to storm fronts can be particularly dangerous due to rapid changes in wind strength and direction.^[69]

Aggravating factors

Lack of a sufficient downwind buffer distance between the kiter and hard objects has contributed to accidents reducing the available distance and time for reaction. Jumping and being airborne at inappropriate places such as shallow water or near fixed or floating objects can be hazardous. Collisions with wind surfers, other kite boarders or water craft are hazards, particularly at busy locations.

Solo kiteboarding has been a frequent contributing cause to accidents; kiteboarders should try to kite with friends and keep an eye on one another. A kitesurfer can get farther from shore than an easy swim, which is the primary reason kitesurfing in directly offshore winds is discouraged. Marine hazards include sharks, jellyfish, sea otters, dolphins, and even crocodiles, depending on the location. Potential conflicts can also arise from the migratory movements of birds.^[44] Drowning has been a factor in severe accidents as well and may have been avoided in some cases through the use of an appropriate flotation aid or impact vest and development of acceptable swimming skills.

Safety equipment

This section needs additional citations for verification. (January 2023)

Some kite designs from late 2005 and onward have included immediate and almost full depower integrated with the control bar and improved quick release mechanisms, both of which are making the sport much safer. However, lack of sufficient practice of emergency depowering the kite and going out in excessively strong or unstable weather can reduce the benefit of high depower kites.
Another important part of the safety equipment is the impact vest, which doubles as an improved floatation device. It reduces the severity of eventual impacts, but also improves the user endurance in the long procedures of self-rescue in deep waters, which almost every freeriding kiter experiences sooner or later. It is also important and overlooked as a complement to the harness, precluding it to climb along the chest during powerful kite loops, which otherwise would hurt the ribs.
The other important pieces of a reasonable safety kit are the safety hook knife to cut tangled lines, the helmet in a high visibility colour, a wet suit of reasonable thickness, depending on the water temperature, and possibly neoprene boots if the beach has much shellfish or hard rocks.

Statistics

Accidents can generate serious injuries or even be deadly. 105 accidents were reported in the Kiteboarding Safety Information Database between 2000 and September 2003, with 14 fatalities.^[70] In South Africa between October 2003 and April 2004, 83% of search & rescue missions involving kitesurf were in offshore winds with the kite still attached to the harness, uncontrolled in strong winds or impossible to relaunch in weak winds. On 30 missions, there were five injuries: two had bone fractures after being hit by their boards, two others were suffering from critical hypothermia and exhaustion and the fifth was exhausted and lacerated. There were no fatalities.^[71]

Advances in hybrid and bow kite designs leads to a better ability to control the power that they provide and effective safety release systems.^[72] In 2005, the U.S. kiteboarding fatality rate was 6 to 12 deaths for each 100,000 participants. This is higher than SCUBA diving (~4 to 5 per 100,000) and walking (~2 per 100,000), comparable to motor vehicle traffic (~15 per 100,000), and below paragliding (~88 per 100,000).^[73]

However these figures have to be correctly interpreted, since they do not account for the rate of accidents per hour of practice, which would be the telling index. Kiteboarding lends itself to a rather frequent practice, much like a gym program, arguably more frequent than other risky sports like scuba diving. Therefore, further data is required to properly evaluate the risk associated with kiteboarding.

Kitesurfing safety rules

While some countries have specific regulations on flying kites that may also apply to kitesurfing,^[74] most do not. However a kitesurfer should comply to the sailing rules regulating water crafts in many countries, like the U.S. Coast Guard regulations.^[75] Developed from such generic rules a set of kitesurf specific rules or recommendations has been taking form since the beginning of the sport.

The examples and perspective in this article may not represent a worldwide view of the subject. (August 2010)

The first such rule is the prudential rule: with so many people just discovering water sports, a kiter shouldn't assume others adequate knowledge, training or even proper attitude, and be prepared to observe self-preserving distances and always let the others perceive clearly its intentions and its intended path.

Waterstarters have priority: the rider going out from the beach has always priority over the riders coming in.

Kite High Rule - A kiter who is upwind (closest to the wind) must keep their kite high to avoid their lines crossing those of downwind kiters. Similarly, the downwind kiter must keep their kite low to avoid their lines crossing upwind kites. This applies regardless of whether kiters are on the same, or opposing courses.

Clearance Rule - A kiter while jumping must have a clear safety zone of at least 50m downwind because they move downwind during the jump. A rider must also have a clear safety zone of 30m upwind to jump as his lines could touch the kite or the lines of another rider kiteboarding close by (see Kite High rule). It's important to also consider potential hazards downwind and crosswind of the rider such as people, buildings, trees and other fixed obstacles. Because of the clearance rule a jumper never has the right of way.

Kiters are also considered as sailing vessels – so all the standard sailing rules apply such as:

Starboard Rule When kiters approach from opposite directions the kiter who has the wind on the starboard (right side, right leg/arm leads in direction of travel) has right of way. The kiter who has the wind on the port side (left side, left leg/arm are leads in direction of travel) shall keep out of the way of the other. In simple terms, this means "keep right" with the kiter coming in the opposite direction passing on the left.

In sailing terms, a sailor or kiter with right of way is entitled to "insist" on exercising that right (warning opposing kiters) by shouting "starboard" clearly and in good time.

Many of the sailing rules of right of way are different expressions that the most maneuverable craft should give way to the less maneuverable one. Therefore, kiters should give way to fishing vessels, but not to a jet ski. Other boating rules such as no-go zones, distance from shore and swimmers also apply.^[76] Also surfing rules do apply, so for instance, the rider to catch a wave closer to the crest has the right of way even if not on a starboard tack, freeriders included.