to assist / to protect, to guard

Clipping of 翼状突起 (yokujō tokki, “pterygoid process”).

(aviation) aileron

sightseeing boat; tour boat; pleasure boat (ship)

a large warship using during the 16-17th century in Japan

steamship

a type of military boat used between the Warring States Period and the Edo Era

a spaceship (vehicle that flies through space, designed to fly with human onboard)

icebreaker (ship designed to break through ice)

cargo ship, freighter