As regards torpedoes or missiles, yes, the submarine has weapons that can be launched underwater.
That is the correct spelling for "submarine" (underwater, or underwater vehicle).
A valley that is underwater.
A submarine
A vessel that travels underwater is termed a submarine.
submarine
their floating at a depth
A submarine.
Underwater
Submarine
Submarine
A valley that is underwater.
A submarine can surface from underwater in a matter of minutes, typically taking around 1-3 minutes to reach the surface.