YACHT - A sailboat or powerboat used for pleasure, not a working boat.
YACHT - A pleasure vessel, a pleasure boat; in American usage the idea of size and luxury is conveyed, either sail or power.
YACHT BROKER - Form of coastal marine life found in many harbors in the Northern Hemisphere generally thought to occupy a position on the evolutionary scale above algae, but somewhat below the cherrystone clam.
YANKEE - A foresail flying above and forward of the jib, usually seen on bowsprit vessels.
YARD - a spar usually fixed horizontally to a mast to support a sail.
- That part of the yard that lies between the lift and the outer end
YARN - A sea tale.
YAW - To swing or steer off course, as when running with a quartering sea.
YAWING - The motion of a ship when she deviates from to the right or left.
YAWL - Southern version of ahoy.
YAWL BOAT - Smaller powered boat used to provide steerage-way when not under sail