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2. 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.

3. 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 ...

4. Upholder/Victoria-class submarine - Wikipedia

   en.wikipedia.org/.../Victoria-class_submarine

   The Upholder/Victoria-class submarines, also known as the Type 2400 (due to their displacement of 2,400 tonnes), are a class of diesel-electric submarines built in the United Kingdom in the 1980s to supplement the nuclear submarines in the Submarine Service of the British Royal Navy . The boats were originally named the Upholder class, after ...

5. Vertical launching system - Wikipedia

   en.wikipedia.org/wiki/Vertical_launching_system

   A diagram of K-VLS An example of modern VLS cells, these being the Mk. 41, on board USS San Jacinto In December 1959, the U.S. Navy commissioned the USS George Washington as its first ballistic missile submarine, making it the first VLS-equipped submarine in the world to use nuclear rather than diesel propulsion The Kara-class cruiser Azov was the first surface ship to be fitted with a true ...

6. Vent (submarine) - Wikipedia

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

   Vent (submarine) The vents of the Redoutable are under the casing. The square openings in the casing are limber holes to facilitate draining the superstructure. In submarine technology a vent is a valve fitted to the top of a submarine 's ballast tanks to let air escape from the top of the ballast tank and be replaced by water entering through ...

7. 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 ...

8. 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]

9. Ohio-class submarine - Wikipedia

   en.wikipedia.org/wiki/Ohio-class_submarine

   The Ohio class of nuclear-powered submarines includes the United States Navy 's 14 ballistic missile submarines (SSBNs) and its four cruise missile submarines (SSGNs). Each displacing 18,750 tons submerged, the Ohio -class boats are the largest submarines ever built for the U.S. Navy. They are also the third-largest submarines ever built ...