Sailing Rules: Racing Rules and Boating Safety

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A Wednesday-night race at the yacht club. The committee boat sounds the five-minute signal, a dozen boats circle behind the line, and the first beat ends with three of them converging on the windward mark at once. Somebody calls “Starboard!”, a port-tacker ducks behind, and everyone rounds without a scratch. Out on the bay on a Sunday, a family cruising under sail meets a ferry in a narrow channel, and a different rulebook decides who moves. Sailing has two sets of sailing rules: the Racing Rules of Sailing for the racecourse, and the federal boating safety rules and Navigation Rules that apply to every boat on the water. This page covers the basics of both in plain words.

For the big picture of the sport, start at our sailing hub.

The Racing Rules of Sailing in one minute

Sailboat races everywhere, from a junior Opti regatta to the Olympics, run on The Racing Rules of Sailing (RRS). World Sailing, the sport’s world governing body, publishes a new edition every four years, after the Olympic Games. The current 2025–2028 edition took effect on January 1, 2025. In the US, US Sailing adds its own national prescriptions. Each regatta’s notice of race and sailing instructions can change details, so read them.

The rules start with safety and sportsmanship. A boat must help any person or vessel in danger. Each boat carries life-saving equipment for everyone aboard, and each sailor is personally responsible for wearing a life jacket adequate for the conditions. When the race committee flies flag Y, life jackets are required for everyone. US Sailing’s prescription adds that boats must carry the life-saving equipment that government regulations require in the racing area.

How a race starts

The standard start is a five-minute sequence of flags and sounds from the committee boat:

• 5 minutes: warning signal. The class flag goes up with one sound.
• 4 minutes: preparatory signal. A flag such as P goes up with one sound. From now on you are racing under the rules.
• 1 minute: the preparatory flag comes down with one long sound.
• Start: the class flag comes down with one sound. Cross the line after this, not before.

Time the sequence by the flags, not the sounds: a horn can fail or be late. A watch with a regatta timer helps; see our sailing wearables page.

Right of way: the four rules everyone learns first

Part 2 of the RRS, “When Boats Meet,” is the heart of racing. You’re on starboard tack when the wind comes over the right (starboard) side of the boat and your boom is out to the left; port tack is the opposite.

1. Rule 10, port/starboard: when boats are on opposite tacks, the port-tack boat keeps clear of the starboard-tack boat. That’s why you hear “Starboard!” across the course.
2. Rule 11, windward/leeward: on the same tack and overlapped, the windward boat (the one closer to the wind) keeps clear of the leeward boat.
3. Rule 12, clear astern: on the same tack and not overlapped, the boat clear astern keeps clear of the boat clear ahead.
4. Rule 13, while tacking: once a boat passes head to wind, she keeps clear of other boats until she is on a close-hauled course.

“Keep clear” has a precise meaning: the right-of-way boat can sail her course with no need to take avoiding action. When you’re the give-way boat, your choices are to cross well ahead, tack away, duck behind, or slow down. And the right-of-way boat has duties too. Rule 14 says every boat must avoid contact if reasonably possible, and a boat that changes course or newly gets right of way must give the other boat room to keep clear. Being right is no excuse for a collision.

Mark room: the zone and Rule 18

Most racing incidents happen at the marks. Around each mark is the zone, an imaginary circle three hull lengths of the boat nearer to it. Rule 18 decides who gets mark-room, meaning room to sail to the mark, round it and leave it astern:

• Overlapped when the first boat reaches the zone: the outside boat gives the inside boat mark-room.
• Not overlapped: the boat that reached the zone first gets mark-room. This is the main 2025 change: under the old rules the test was whether a boat was “clear ahead,” and now it’s simply who got to the zone first.
• Once it’s decided, it sticks: the boat owing mark-room keeps owing it, even if an overlap is later broken or a new one begins, until the boat entitled to it passes head to wind or leaves the zone.
• Exception: Rule 18 doesn’t apply between boats on opposite tacks on a beat to windward. There, port/starboard (Rule 10) rules. It also doesn’t apply at a starting mark surrounded by water while boats are approaching it to start.

Penalties and protests

Break a right-of-way rule and you can take a penalty on the water: sail well clear of other boats as soon as you can and promptly make the two-turns penalty, two turns in the same direction, each with one tack and one gybe. Touch a mark and the penalty is one turn. If you don’t take a penalty and another boat thinks you broke a rule, it can protest, and a jury or protest committee hears both sides on shore. Match racing, like the America’s Cup, uses on-the-water umpires who penalize right away instead. For a deeper read with color diagrams, many sailors keep Bryan Willis’s The Rules in Practice 2025–2028 (about $28, 160 pages) in their bag.

Off the racecourse: the Navigation Rules

Cruising, daysailing or sailing to the race area, you follow the Navigation Rules (the “Rules of the Road”) that the Coast Guard publishes for US and international waters. The basics for sailors:

• Two sailboats meeting: Rule 12 works much like racing. A boat with the wind on her port side keeps out of the way of one with the wind on her starboard side, and on the same tack the windward boat keeps out of the way of the leeward boat.
• Power and sail: a power-driven vessel generally keeps out of the way of a sailing vessel. But a sailing vessel, or any vessel under 20 meters, must not impede a ship that can only navigate safely within a narrow channel. Don’t play chicken with a tanker or a ferry.
• Overtaking: any vessel overtaking another keeps out of the way, sail or power.
• Engine on = powerboat: a sailboat motoring, even with sails up, is a power-driven vessel under the rules.
• Lookout and lights: always keep a proper lookout. From sunset to sunrise and in fog, a sailboat under sail shows red and green sidelights and a white sternlight; a boat under 7 meters can keep a white flashlight ready if fixed lights aren’t practical.

US Coast Guard required equipment

Federal rules set the minimum equipment for recreational boats, and your state can add more (state boating agencies set boater education and operator rules, so check yours). For a sailboat, the key items are:

• Life jackets: one Coast Guard-approved wearable life jacket for each person aboard, in good condition, the right size for the wearer and readily accessible (not in plastic bags or locked lockers). Boats 16 feet and longer, except canoes and kayaks, also carry one throwable device, within arm’s reach. A cushion like the Onyx Type IV throwable cushion (about $26, 15 × 16 inches, with grab straps) covers that.
• Kids under 13 must wear an approved life jacket while the boat is underway, unless they’re below deck or in an enclosed cabin. If your state has its own child-wear rule, the state’s rule applies. See our youth sailing page for sizing.
• Sailboards (windsurfers) are exempt from the federal carriage rule, but racing rules, local laws and common sense often call for a life jacket or impact vest anyway, especially on foils and kites.
• Visual distress signals: required on coastal waters, the Great Lakes and connected waters. Boats under 16 feet, boats in organized races and regattas, and open sailboats under 26 feet without an engine need only night signals, and only when out between sunset and sunrise.
• Sound signals: the Navigation Rules require sound signals when meeting, crossing and overtaking, in reduced visibility and at anchor, so carry a horn or whistle. A pealess whistle like the Fox 40 Classic (about $7, heard up to a mile away per the maker) clips to a life jacket.
• Fire extinguishers: required where engines or fuel create a fire hazard, such as permanently installed fuel tanks, closed compartments for portable tanks or closed living spaces. Many keelboats with an engine need one.

Why the safety rules matter

The Coast Guard’s 2024 Recreational Boating Statistics counted 556 deaths, the fewest since it began keeping records more than 50 years ago. Where the cause was known, 76% of victims drowned, and where life jacket use was known, 87% of them weren’t wearing one. Alcohol was the leading known contributing factor in fatal incidents, and where instruction was known, 69% of deaths happened on boats whose operator had no boating safety instruction.

Cold water is the other danger. The Coast Guard describes three stages: cold shock (a sudden gasp and fast breathing that passes in about a minute), cold incapacitation (within about 10 minutes you lose useful movement of your fingers, arms and legs) and hypothermia (loss of consciousness can come in as little as an hour). After a capsize, stay with the boat, get as much of your body out of the water as you can, and dress for the water temperature. Our sailing injuries page covers boom strikes and concussion, and the race day page covers sun, heat and weather.

Gear that helps you follow the rules

Prices change often. The prices below are what we saw at the maker or a major retailer in October 2026; check the current price before you buy.

For dinghy racing, a foam vest you can move in is the life jacket you’ll actually wear. The Onyx MoveVent Dynamic (about $69) is Coast Guard and Transport Canada approved, with SOLAS reflective trim and expandable pockets. More choices, including inflatables for keelboats, are on our sailing gear page.

Back to the sailing hub, or see sailing leagues and associations, youth sailing and sailing gear. For another sport’s rulebook, see soccer rules or the lineup code on our surfing rules page.

Sailing rules questions

Who has the right of way, port or starboard?

Starboard. When two sailboats are on opposite tacks, the boat on port tack (wind coming over her left side) keeps clear of the boat on starboard tack. That’s Rule 10 in racing and the same idea in the Navigation Rules.

Does a powerboat always give way to a sailboat?

Usually, but not always. A power-driven vessel generally keeps out of the way of a sailing vessel, but a sailboat must not impede a large ship that can only navigate within a narrow channel, any overtaking boat keeps clear, and a sailboat under engine counts as a powerboat.

How big is the zone around a mark?

Three hull lengths of the boat nearer to the mark. Under the 2025–2028 rules, if two boats aren’t overlapped when the first one reaches the zone, the first boat to get there is entitled to mark-room.

What is a two-turns penalty?

After breaking a right-of-way rule, you get well clear of other boats and promptly make two turns in the same direction, each including one tack and one gybe. Touching a mark costs one turn.

Do you have to wear a life jacket on a sailboat?

Federal law requires one approved life jacket aboard for each person, and children under 13 must wear one while underway unless below deck or in an enclosed cabin. Many states, regattas and sailing programs require everyone to wear one. The Coast Guard recommends wearing one always.