WSubmarine
W41 for Freedom
WArgonaut (submarine)
WArgonaut Junior
WAtlantis Submarines
WBaffles (submarine)
WBasic Enlisted Submarine School
WBathyscaphe
WBuilt-in breathing system
WCoastal submarine
WCruiser submarine
WDeepFlight Super Falcon
WEmergency main ballast tank blow
WFinding Nemo Submarine Voyage
WFleet submarine
WFlying submarine
WCosme García Sáez
WHuman torpedo
WNATO Submarine Rescue System
WQuester I
WRebreather
WRegulus missile submarines
WResurgam
WSemi-submarine
WRinspeed sQuba
WSub Marine Explorer
WSubmarine navigation
WSubmarine Voyage
WSubmersible
WTowed array sonar
WU-boat
WUse of the Jolly Roger by submarines
WFile:Smfirstholland.jpg