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The biggest difference was the much larger sail, which permitted a second periscope and additional intelligence-gathering masts, and which reduced the risk of the submarine broaching the surface in heavy seas. The fairwater planes mounted on the sail could rotate 90 degrees, allowing the submarine to surface through thin ice. [1]
As SSNs, Sturgeon-class submarines were designed to primarily perform anti-submarine warfare operations. Seven different primary contractors constructed the 37 boats of the class, making it the second-most numerous nuclear-powered warship class in the world after the 62-boat Los Angeles class. [1] USS Pargo (SSN-650) surfaced in Arctic ice.
USS Silversides (SSN-807) will be a Block 5 Virginia-class submarine for the United States Navy, its third submarine to bear the name, beginning with the World War II-era USS Silversides (SS-236). It was ordered on 2 December 2019. Secretary of the Navy Kenneth Braithwaite announced the name on 15 January 2021 during a visit to the USS ...
USS Norfolk (SSN-815) will be a nuclear-powered Virginia-class submarine of the United States Navy, the second Block VI attack submarines and 42nd overall of her class. She will be the fourth US Navy ship to bear the name Norfolk, the name previously belonged to a Los Angeles-class submarine.
The Type VII was based on earlier German submarine designs going back to the World War I Type UB III and especially the cancelled Type UG. The type UG was designed through the Dutch dummy company NV Ingenieurskantoor voor Scheepsbouw Den Haag (I.v.S) to circumvent the limitations of the Treaty of Versailles, and was built by foreign shipyards.
HMS Achilles (also known as Astute Boat 7) is an Astute-class nuclear-powered fleet submarine under construction for the Royal Navy and the seventh in her class. The boat has had its name changed twice, having previously held the in-work name of Ajax and Agincourt.
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USS Sturgeon (SS-187), a Salmon-class submarine, was the second ship of the United States Navy to be named for the sturgeon.Her 1944 sinking of the Japanese troopship Toyama Maru, killing more than 5,000 Japanese, was one of the highest death tolls from the sinking of a single ship in history.