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 submarineand the wet sub. Used as an adjective in phrases such as submarine cable, "submarine" means "under the sea". The noun submarineevolved as a shortened form of submarine boat (and is often further shortened to sub).[1] 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 large navies. 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.Most large submarines consist of a cylindrical body with hemispherical (and/or conical) ends and a vertical structure, usually located amidships, which houses communications and sensing devices as well as periscopes. In modern submarines, this structure is the "sail" in American usage, and "fin" in European usage. A "conning tower" was a feature of earlier designs: a separate pressure hull above the main body of the boat that allowed the use of shorter periscopes. There is a propeller (or pump jet) at the rear, and various hydrodynamic control fins. Smaller, deep diving and specialty submarines may deviate significantly from this traditional layout. Submarines change the amount of water and air in theirballast tanks to decrease buoyancy for submerging or increase it for surfacing.Submarines have one of the widest ranges of types and capabilities of any vessel. They range from small autonomous examples and one or two-person vessels that operate for a few hours, to vessels that can remain submerged for six months—such as the Russian Typhoon class, the biggest submarines ever built. Submarines can work at greater depths than are survivable or practical for human divers.[2] Modern deep-diving submarines derive from the bathyscaphe, which in turn evolved from the diving bell.
Info are from Wikipedia.org !

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Post comment Comments  (0 - 10 of 38)
Nergal01
Nergal01 Aug 26 2014, 5:36am says: +1 vote     reply to comment
ℱℓσℊℊℯɾ✈
ℱℓσℊℊℯɾ✈ Aug 28 2014, 7:28pm replied:

Waat ? 0_0 this is mind blowing.

+1 vote     reply to comment
Ρrʌжis
Ρrʌжis Apr 24 2014, 2:05pm says:

Ping.... ping.... ping...

+3 votes     reply to comment
Soldier96
Soldier96 May 6 2014, 1:44pm replied:

fart.......fart.....fart...,ops,it was me XD

+3 votes     reply to comment
ℱℓσℊℊℯɾ✈
ℱℓσℊℊℯɾ✈ Apr 24 2014, 7:22pm replied:

Shh !
go deeper !

+2 votes     reply to comment
John-Smith
John-Smith Apr 28 2014, 3:44am replied:

Deeper damnit!

+2 votes     reply to comment
BioDestroyer
BioDestroyer Apr 23 2014, 10:49am says:

Thanks for the invite, Flogger! Joined and tracked. :)

+2 votes     reply to comment
ℱℓσℊℊℯɾ✈
ℱℓσℊℊℯɾ✈ Apr 23 2014, 7:15pm replied:

NP Enjoy your stay here !

+2 votes     reply to comment
zacury
zacury Apr 9 2014, 7:50pm says:

Anybody playing dangerous waters here?
how about try this mod? RA mod(Reinforcement Aleat mod)
it's really cool. fullspeed ahead recommanded! d(-_-)b

go to search on the google. you can easy to find it.

+2 votes     reply to comment
Nergal01
Nergal01 Jul 25 2014, 9:38am replied:

Well, that made me reinstalled DW. But I'm still gotta find an easy-to-learn tutorial.

+1 vote     reply to comment
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