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2. Virginia-class submarine - Wikipedia

   en.wikipedia.org/wiki/Virginia-class_submarine

   Virginia. -class submarine. Only limited by food and maintenance requirements. The Virginia class, or the SSN-774 class, is the newest class of nuclear-powered cruise missile fast attack submarines in service with the United States Navy. The class is designed for a broad spectrum of open-ocean and littoral missions, including anti-submarine ...

3. Saddle tank (submarine) - Wikipedia

   en.wikipedia.org/wiki/Saddle_tank_(submarine)

   Saddle tank (submarine) The German submarine U-995 at the German Navy memorial at Laboe, showing the starboard saddle tank as the elongated bulge along the side of the submarine. Saddle tanks are a type of ballast tank configuration fitted to submarines . Saddle tanks are fitted in pairs external to the pressure hull, one on each side, in a ...

4. Check valve - Wikipedia

   en.wikipedia.org/wiki/Check_valve

   Tilting-disc inconel check valve Check valve symbol on piping and instrumentation diagrams. The arrow shows the flow direction. Vertical lift check valve. A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [1]

5. USS Thresher (SSN-593) - Wikipedia

   en.wikipedia.org/wiki/USS_Thresher_(SSN-593)

   USS. Thresher. (SSN-593) USS Thresher (SSN-593) was the lead boat of her class of nuclear-powered attack submarines in the United States Navy. She was the U.S. Navy's second submarine to be named after the thresher shark . On 10 April 1963, Thresher sank during deep-diving tests about 350 km (220 mi) east of Cape Cod, Massachusetts, killing all ...

6. Seawolf-class submarine - Wikipedia

   en.wikipedia.org/wiki/Seawolf-class_submarine

   Seawolf. -class submarine. The Seawolf class is a class of nuclear-powered, fast attack submarines (SSN) in service with the United States Navy. The class was the intended successor to the Los Angeles class, and design work began in 1983. [ 10] A fleet of 29 submarines was to be built over a ten-year period, but that was reduced to 12 submarines.

7. Columbia-class submarine - Wikipedia

   en.wikipedia.org/wiki/Columbia-class_submarine

   16 × Trident D5 [ 5] and torpedo tubes. The upcoming Columbia-class (formerly known as the Ohio Replacement Submarine and SSBN-X Future Follow-on Submarine) nuclear -powered ballistic missile submarines of the United States Navy are designed to replace the Ohio class. [ 7] Construction of the first vessel began on 1 October 2020. [ 8]

8. Submarine - Wikipedia

   en.wikipedia.org/wiki/Submarine

   A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. [1] The term 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.

9. Subsea valves - Wikipedia

   en.wikipedia.org/wiki/Subsea_valves

   Subsea valves are used to isolate or control the flow of material through an undersea pipeline (submarine pipeline) or other apparatus.Most commonly used to transport oil and gas, they are designed to function in a sub-marine environment, withstanding the effects of raised external pressure, salt-water corrosion, and bubbles or debris in the material carried.