Submarine Strength by Country

Submarine Strength by Country
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. Military uses include attacking enemy surface ships (merchant and military), or other 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 and 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 undersea archaeology.
Most large submarines consist of a cylindrical body with hemispherical (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 use diving planes and also change the amount of water and air in ballast tanks to change buoyancy for submerging and surfacing.
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[@spacedonkey3412]

How many are SSNs, SSGNs, SSKs?

[@arniciaurelian6767]

Russia 20 SSN and US 54, SSBN Russia 16 the US 14, SSGN Russia 9 and the US 4

[@maherbenslimane232]

Algérie ??

[@arniciaurelian6767]

Russia has already up to 69 submarines and another 3 diesel will be ready by 2022.

[@heeheeheehaw6200]

отлично

[@tamluong9109]

Cờ viet Nam sai rồi phải Cờ đỏ Sao vàng

[@rezaamiri8289]

iran✌✌✌👍