Rules

starboard over port

etc

International Regulations for Preventing Collisions at Sea

From Wikipedia:

"9. Narrow channels
 * A vessel proceeding along a narrow channel must keep to starboard.
 * Small vessels or sailing vessels must not impede (larger) vessels which can navigate only within a narrow channel."
 * " 12.   Sailing   vessels
 * Two sailing vessels approaching one another must give-way as follows:
 * 13. Overtaking
 * An overtaking vessel must keep out of the way of the vessel being overtaken. "Overtaking" means approaching another vessel at more than 22.5 degrees abaft[7]  her beam, i.e., so that at night, the overtaking vessel would see only the stern light and neither of the sidelights of the vessel being overtaken.[4]


 * 14. Head-on situations
 * When two power-driven vessels are meeting head-on both must alter course to starboard so that they pass on the port side of the other. "Head-on" means seeing the other vessel ahead or nearly ahead so that by night her masthead lights are actually or nearly lined up and/or seeing both her sidelights, or by day seeing a similar aspect of her.[4]


 * 15. Crossing situations
 * When two power-driven vessels are crossing, the vessel which has the other on the starboard side must give way and avoid crossing ahead of her.[4]  The saying is "If to starboard red appear, 'tis your duty to keep clear".[8]"


 * Port gives way to Starboard. When each has the wind on a different side, the vessel which has the wind to port must give way;
 * Windward gives way to leeward. When both have the wind on the same side, the vessel which is windward must give way to the vessel which is leeward;
 * Unsure port gives way. If a vessel, with the wind on the port side, sees a vessel to windward and cannot determine whether the other vessel has the wind on the port or the starboard side, they must give way."
 * "18. Responsibilities between vessels :*:*:Except in narrow channels, traffic separation schemes, and when overtaking (i.e., rules 9, 10, and 13)
 * A power-driven vessel must give way to:
 * a vessel not under command;
 * a vessel restricted in her ability to maneuver (this may include vessels towing one another[9] );
 * a vessel engaged in fishing;
 * a sailing vessel.
 * A sailing vessel must give way to:
 * a vessel not under command;
 * a vessel restricted in her ability to maneuver;
 * a vessel engaged in fishing."

Wikipedia

"based on the COLREGs, but differ in some important matters such as overtaking and right of way close to turning marks in competitive sailing." [Wikipedia on COLREGs]

Racing Rules of Sailing

Wikipedia