The bottom-most portion or longitudinal centerline of a hull.

A sailboat similar in appearance to a yawl with a tall main mast and a shorter mizzen mast ahead of the rudder post.

kicker motor
A small auxiliary outboard motor.

kill switch
A switch with a lanyard that automatically shuts off an engine if disconnected.

kite fishing
A technique that involves attaching a fishing line to a kite to present bait at a distance from the boat.

Speed measured in nautical miles per hour.