submersible
small watercraft able to navigate under water
bathyscaphe
small submarine especially designed to explore profound depths of the oceans, resisting enormous water pressure
Turtle
first combat submersible; United States, 1775
Titan
imploded submersible
narco-submarine
submersible used by drug smugglers
Antipodes
commercial submarine built in 1973
submersible drilling rig
marine vessel that is floated to a location and lowered onto the sea floor for offshore drilling
Neptune
submersible
JAGO
Manned German research submersible
Osprey-class submersible
class of submersible of the People's Liberation Army Navy
bathysphere
tethered spherical deep-sea observation submersible lowered on a cable