艇

naval vessels

kyōtei

launch

boat hull

half a boat length

captain (of a midget submarine, torpedo boat, etc.)

fireboat

bow (of a boat)

boat length

boat racing facility

airship

guardship

lifeboat

lifeboat

minesweeping ship

ship

submersible

patrol boat

torpedo boat

boat-house

landing craft

auxiliary vessel

military transport vessel

rowing

midget submarine

(small) boat

missile boat

(small) boat

special purpose submarine (esp. Japanese midget submarines used in WWII)

rowing course

submarine chaser

mine warfare vessel

patrol boat

landing ship

torpedo boat

boat

(steam) launch

military patrol boat

flying boat