Leeward boat wins. When two sailboats meet on the same tack, the leeward boat has the right of way over the windward boat. Nuclear Not Under Command . Boats with restricted maneuverability, whether due to fishing, draft, length, towing, or other causes, have the right of way over vessels not so restricted. Boats constrained to a narrow channel by their draft have the right of way.
Sailboats have the right of way over powerboats.
Seaplanes must avoid everybody else. Lead vessel must ack. Otherwise, standard signals. All vessels participate. If moored at end of pier, any noise.