the U boats..
Submarines were sometimes referred to as submersibles.
U-Boat , ULTRA ,U-boat, the name for German submarines during World War 2
submarines
the word in German is Unterseeboot -- literally, boat under the sea. The informal name for the vessels are U-Boat.
The Yanks
Convoy
During World War I, German submarines were primarily referred to as "U-boats," short for "Unterseeboot," which translates to "undersea boat." The most notable classes of U-boats included the U-boat Type U-1, U-boot Type U-19, and the larger U-boat Type U-35. These submarines were instrumental in Germany's naval strategy, particularly in unrestricted submarine warfare, targeting Allied shipping to disrupt supply lines.
The name U-boat was applied to German submarines.
'U-boats' was the name given to German submarines in both the first and second world war.
Of the 52 US Navy Submarines lost during WW2, fifty were lost in the Pacific and only two were lost in the Atlantic Oceans (both by accidents). The two Atlantic US Submarines lost were the USS Dorado and USS R-12. The Submarine DORADO was sunk by friendly fire (US Aircraft) and the Submarine R-12 was sunk during a diving accident.
A German submarine used in WW I was called a U-boat.
Non-aligned nations Buffer States