can you explain in brief how these vehicles you just mentioned work?
It is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability.
Submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. 
when did raiders of the lost arc come out 1981 who was the protagonist of the film? Indiana Jones who played the character? Harrison Ford can you name some locations where the movie was shot? Filming took place on sets at Elstree Studios Studios, and on location in La Rochelle in France, Tunisia in North Africa and Hawaii. where is this city located? La Rochelle is a city in southwestern France and a seaport on the Bay of Biscay, a part of the Atlantic Ocean. when was it established? La Rochelle was founded during the 10th century how was it associated with the second world war? During the Second World War, Germany established a submarine naval base at La Pallice; the main port of La Rochelle
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Submarine [SEP] Introduction
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. It is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as "boats" rather than "ships" irrespective of their size. Although experimental submarines had been built before, submarine design took off during the 19th century, and they were adopted by several navies. Submarines were first widely used during World War I (1914–1918), and are now used in many navies large and small.