A submarine is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term most commonly refers to a large, crewed, autonomous vessel. 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. Used as an adjective in phrases such as submarine cable, "submarine" means "under the sea". The noun submarine evolved as a shortened form of submarine boat (and is often further shortened to sub).For reasons of naval tradition, submarines are usually referred to as "boats" rather than as "ships", regardless 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 now figure in many navies large and small. Military usage includes attacking enemy surface ships (merchant and military), submarines, aircraft carrier protection, blockade running, ballistic missile submarines as part of a nuclear strike force, reconnaissance, conventional land attack (for example using a cruise missile), and covert insertion of special forces. Civilian uses for submarines include marine science, salvage, exploration and facility inspection/maintenance. Submarines can also be modified to perform more specialized functions such as search-and-rescue missions or undersea cable repair. Submarines are also used in tourism, and for undersea archaeology.
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Way too many adds I just installed it and could not even get to the settings before three adds hit me I am uninstalling. Its crazy all of those adds
I love the video, however it needs more boats other than just the Uboat
The master piece photo graphy ,excellent & natural views ,I need more such kind of it!!!
Because there was no gallery
This app would be nice if you didn't get spammed every other second!!!!!!
This is cooler than are puppy
Do you know how to put on some good tunes to your app's?
A triumph! Excellent!
U boat excellent.
If your into subs, then this app is awesome! Mostly because of the ads ads, ads, ads, ads, ads, ads, ads, ads, ads, and more ads. You will be completely in love before you even get started because of those ever comforting ads, ads, ads, ads, ads, ads, ads, ads, and I think there are even more um,,, ads I think. :+(