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The V-4 was a significant boat in that it was the first submarine in the USN to incorporate welding in its construction. All submarines prior to V-4 were of all-riveted construction. Engineers at Portsmouth Navy Yard, led by Navy welding expert James W. Owens, experimented with welding for the first time during her construction.
The Cachalot-class submarines were a pair of medium-sized submarines of the United States Navy built under the tonnage limits of the London Naval Treaty of 1930. They were originally named V-8 and V-9, and so were known as "V-boats" even though they were unrelated to the other seven submarines (V-1 through V-7) constructed between World War I and World War II.
Pages in category "V-boats" The following 20 pages are in this category, out of 20 total. This list may not reflect recent changes. ...
List of United States Navy ships is a comprehensive listing of all ships that have been in service to the United States Navy during the history of that service. The US Navy maintains its official list of ships past and present at the Naval Vessel Register (NVR), [1] although it does not include early vessels.
The V-class submarines were very similar to the preceding U-class (short-hull) boats, of which they constituted a linear development, but had 3 ⁄ 4-inch (19 mm) pressure hull plating instead of 1 ⁄ 2-inch (13 mm) for deeper diving, also a lengthened stern and fining at the bow to reduce noise and improve underwater handling.
The current Virginia-class boats cost about $2.8 billion per hull, while the Block V boats with the 80-foot Virginia Payload Module will cost about $3.2 billion. "The Navy indicates that the next-generation attack submarine should be faster, stealthier, and able to carry more torpedoes than the Virginia class, similar to the Seawolf -class ...
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