submersible; (small) submarine
captain (of a midget submarine, torpedo boat, etc.); skipper (of a small boat); coxswain; length of a boat
midget submarine; submarine
kyōtei; boat race; hydroplane racing event and gambling sport in Japan
minesweeping ship; minesweeper
boat's length (unit in racing); distance between two boats (in a race)
ship; boat; vessel; craft
special purpose submarine (esp. Japanese midget submarines used in WWII)
military transport vessel
rowing course; rowing centre (center)
boat's length (unit in racing); distance between two boats (in a race)
Sparviero-class patrol boat
Tiger-class fast attack craft
Orkan-class fast attack craft
Gepard-class fast attack craft
Albatros-class fast attack craft
Helsinki-class missile boat
Hamina-class missile boat