Sailboat (side view): boat that travels with the help of a sail.
Masthead: top of the mast.
Backstay: rope holding the mast in place from the rear and side.
Stay: rope holding the mast in place from the front.
Forestay: secondary rope holding the mast in place towards the front.
Gallery: guard rail at the rear of a boat.
Waterline: the level up to which the hull is submerged.
Keel: part that runs the length of centre of bottom of a boat.
Rudder: removable flap on the surface of the rudder.
Rudder head: main part of the rudder.
Boom: large horizontal posed used to spread the sails.
Preventer shroud: rear auxiliary stay.
Lift: rope used to hold the boom.
Mast: cylindrical post that carries the sails.
Navigation lights: light at the top of the mast.