War boats were called triremes.
The viking boats were called tall ships
The small boats of Venice are called gondolas.
life boats
yes
the boats look a little like a canoe and are called kayaks
u-boats, "undersea boats"
they are called gondolas
german U-boats were submarines. in German they are called Unterseeboot
Higgins boats oh yeahs
U boats- for Unterseabooten (under sea boats)
In their history, submarines were called by many names such as 'U-boats', 'eel boats', 'plunging boats', 'devil divers', and 'pig boats'. Technically, and by size, the submarine is a ship, but it has been called a boat since its earliest days, and the term is steeped in tradition. Submariners almost invariably call their ships 'boats".