Yes they can!
A submarine is a vessel that can travel both on the surface and under the water.
yes, as long as it was being towed by a submarine.
water travel is traveling on/in a boat or a submarine.
As of 2014, a submarine can travel between 49 and 52 miles per hour. The exact speed depends on the make of the sub and whether it is traveling on the surface or under water.
USS Triton (SSRN/SSN 586)
Submarine cables are only suitable for use under water, that is what they are made for.
A submarine is only used under water.
The submarine is under water.
The vessel is a submarine.
Submarine.
it is a under water earthquake
In war a submarine can hide under the water and attack without being seen.