Understanding Sailboat Right of Way Rules (COLREGs Made Simple)

Understanding sailboat right-of-way rules is one of the first things every sailor should tackle before heading out on the water.

Who goes first when two boats meet on open water? What happens when a sailboat and a powerboat are heading toward each other?

These rules are simpler than most people think.

This guide covers the key COLREGs (International Regulations for Preventing Collisions at Sea) every boater should know before heading out on the water.

What Are Give-Way and Stand-On Vessels?

Every right-of-way situation on the water comes down to two roles.

The stand-on vessel keeps its course and speed. It has the right of way.

The give-way vessel takes early and obvious steps to get out of the way. That means slowing down, stopping, or changing direction.

Any change in course or speed needs to be big enough for another vessel to notice. A slight turn of the wheel won't cut it.

If the give-way vessel doesn't act in time, the stand-on vessel should then alter course to avoid a collision.

Do Sailboats Always Have Right of Way Over Powerboats?

When a vessel under sail meets a powerboat, the sailboat has the right of way. Sailboats rely on wind for propulsion, which makes it harder to change direction quickly.

So, in most cases, the powerboat is the give-way vessel.

Here's the catch, though. If a sailboat has its auxiliary power engaged, it counts as a powerboat, even with sails up. That changes its responsibilities to other boats nearby.

Certain vessels also get priority over sailboats under sail:

• Vessels constrained by draft (deep hull boats moving through shallow channels)
• Vessels restricted in their ability to maneuver (tugs, commercial fishing boats with gear deployed, buoy tenders)
• Vessels not under command

Three Right-of-Way Rules Every Sailor Needs

When two sailboats meet, the three rules of the road decide who goes first.

Port Tack vs. Starboard Tack

If two boats are on different tacks, the one on starboard tack (wind coming from the starboard side, mainsail on port) has the right of way.

The boat on port tack (wind from port, mainsail on starboard) is the give-way vessel. It should make a big, early course change so the other boat can spot it.

Picture two boats sailing toward each other from opposite directions. The starboard tack boat holds its line while the port tack boat alters course to avoid a collision.

Windward vs. Leeward

When both boats are on the same tack, the leeward boat (further downwind) has the right of way.

The windward boat (closer to where the wind blows from) gives way. On larger vessels, the windward boat's sails can block wind from reaching the leeward boat, so keeping plenty of room is the move here.

The Overtaking Rule

If you're coming up behind another boat, you give way. It doesn't matter what tack either vessel is on or whether it's a sailboat or a powerboat.

The overtaken vessel is always the stand-on vessel.

When passing a larger vessel, give extra room. Heavy hulls throw bigger wakes, which can toss another boat around or disrupt their sail trim.

What to Do When Two Boats Cross Paths

Crossing situations follow the tack rules. If two boats cross on different tacks, the port tack gives way to the starboard tack. On the same tack, the leeward boat holds the right of way.

When meeting head-on, each vessel should alter course to starboard to give a wide berth.

In a narrow channel, keep to the starboard side. A sailboat shouldn't block a larger vessel that can only move safely within that channel, even when under sail.

For example, if a deep draft tanker is coming through a tight passage, every other boat in that channel gives way. Vessel size and draft change the rules of the road in these situations.

How to Read Navigation Lights at Night

Right-of-way rules don't change after dark. But at night, navigation lights tell you what's happening around you.

Here's how to read the three most common light patterns:

• If you see a red light moving in front of you, another vessel is crossing. You may be on a collision course.
• If you see both red and green lights ahead, a boat is heading straight toward you. Alter course to starboard.
• A white light means you're coming up behind another vessel. You're the give-way boat.

Knowing what each light means helps you take evasive steps well before a close call.

Quick Safety Tips for Vessel Operators

Knowing the rules of the road is step one. Applying them on the water takes practice and awareness.

Here are a few habits every vessel operator should pick up:

• Keep a lookout at all times. Scan the horizon for boats, obstacles, and weather changes.
• Communicate your intentions. Use VHF radio or horn blasts in crowded waters.
• Maintain a safe speed in busy areas, poor visibility, or unpredictable wind conditions.
• Make course changes big and obvious so other vessel operators can tell what you're planning.
• Check local navigation rules before heading out. Some waterways have unique right-of-way conditions in both inland and international waters.

Put These Rules Into Practice With Sailing Virgins

Sailing Virgins' ASA-certified courses put every student at the helm from day one. COLREGs, docking, anchoring, and crew leadership are all covered during a week of hands-on training with professional instructors.

From the beginner courses (ASA 101 + 103) to the advanced courses (ASA 105 + 106), every course is packed with practical sailing on 40+ foot cruising yachts.

The rules won't just stay on paper. They'll become second nature after a week on the water.

Head to Sailing Virgins and book the course that's right for you. Understanding sailboat right-of-way rules is a whole lot easier with an experienced instructor right next to you at the helm.