The term "sailing" is also used for submarines - the definition of "sailing" has several meanings besides the one most people think about, which is wind billowing through canvas of a sailing vessel. The one that applies is "The skill required to operate and navigate a vessel". It doesn't make any difference if the vessel is above or below the waterline.
A submarine.
the U boat 'is' the German word for submarine. western nations just used submarine. U boat is short for Unterwasserboot, which translates as undersea boat or under water boat or submarine.
I dont know
this word is an adjective meaning "under the sea". submarine is the word shortened from the term "submarine boat".
a under water boat hmm... titanic (kidding) submarine
A submarine.
The German name for a submarine - under sea boat.
Submarine
U = Unter (in German) = under so is a boat that goes under (the water) namely a submarine
the name of a boat that goes underwater is called a SUBMARINE.
submarine
It is a submarine. Spelled U-boat from the German Untersee (under the sea)