The Gato class of submarines was built for the United States Navy and launched in 1941–1943; they were the first mass-production U.S. submarine class of World War II. Together with their near-sisters the Balao and Tench classes, their design formed the majority of the United States Navy's World War II submarine fleet. Named after the lead ship of the class, USS Gato, the Gatos and their successors formed the core of the submarine service that was largely responsible for the destruction of the Japanese merchant marine and a large portion of the Imperial Japanese Navy in World War II. Gato's name comes from a species of small catshark. Like most other U.S. Navy submarines of the period, boats of the Gato class were given the names of marine creatures. In some references, the Gatos are combined with their successors, especially the Balao class.
The first USS Chicago was a protected cruiser of the United States Navy, the largest of the original three authorized by Congress for the "New Navy". One of the U.S. Navy's first four steel ships.
USS Barracuda (SF-4/SS-163), lead ship of her class and first of the "V-boats," was the second ship of the United States Navy to be named for the barracuda.
The Balao class was a successful design of United States Navy submarine used during World War II, and with 120 boats completed, the largest class of submarines in the United States Navy. An improvement on the earlier Gato class, the boats had slight internal differences. The most significant improvement was the use of thicker, higher yield strength steel in the pressure hull skins and frames, which increased their test depth to 400 feet (120 m). Tang actually achieved a depth of 612 ft (187 m) during a test dive, and exceeded that test depth when taking on water in the forward torpedo room while evading a destroyer.
USS Bonita (SF-6/SS-165), a Barracuda-class submarine and one of the "V-boats," was the third ship of the United States Navy to be named for the bonito. Her keel was laid down by the Portsmouth Navy Yard. She was launched on 9 June 1925 as V-3 (SF-6), sponsored by Mrs. L.R. DeSteiguer, wife of Rear Admiral DeSteiguer, and commissioned on 22 May 1926, Lieutenant Commander Charles A. Lockwood, Jr. in command. Like her sisters, Bonita was designed to meet the fleet submarine requirement of 21 knots (39 km/h) surface speed for operating with contemporary battleships.
The Florida-class battleships of the United States Navy comprised two ships: Florida and Utah. Launched in 1910 and 1909 respectively and commissioned in 1911, they were slightly larger than the preceding Delaware class design but were otherwise very similar. This was the first US battleship class in which all ships received steam turbine engines. In the previous Delaware-class, North Dakota received steam turbine propulsion as an experiment while Delaware retained triple-expansion engines.
The V-boats were a group of nine United States Navy submarines built between World War I and World War II from 1921 to 1934 under authorization as the "fleet boat" program.
USS Bass (SF-5/SS-164), a Barracuda-class submarine and one of the "V-boats", was the first ship of the United States Navy to be named for the bass.
The Tambor-class submarine was a United States Navy submarine design, used primarily during World War II. They were the USN's first fully successful fleet submarine, and began the war close to the fighting. Six of the class were in Hawaiian waters or the Central Pacific on 7 December 1941, with Tautog at Pearl Harbor during the attack. They went on to see hard service; seven of the twelve boats in the class were sunk before the survivors were withdrawn from front-line service in early 1945; this was the highest percentage lost of any US submarine class. Tautog was credited with sinking 26 ships, the largest number of ships sunk by a US submarine in World War II. The Tambors attained the top speed of 21 knots (39 km/h) and range of 11,000 nautical miles (20,000 km) of the preceding Sargo class, and improvements included six bow torpedo tubes, a more reliable full diesel-electric propulsion plant, and improved combat efficiency with key personnel and equipment relocated to the conning tower. In some references, the Tambors are called the "T Class", and SS-206 through SS-211 are sometimes called the "Gar class".
USS Florida was an Arkansas-class monitor in the United States Navy.
The Clemson class was a series of 156 destroyers which served with the United States Navy from after World War I through World War II.
The Porpoise class were submarines built for the United States Navy in the late 1930s, and incorporated a number of modern features that would make them the basis for subsequent Salmon, Sargo, Tambor, Gato, Balao, and Tench classes. In some references, the Porpoises are called the "P" class.
The United States' S-class submarines, often simply called S-boats, were the first class of submarines with a significant number built to United States Navy designs. They made up the bulk of the USN submarine service in the interwar years and could be found in every theater of operations. While not considered "Fleet Submarines" in the traditional sense of that term, they were the first submarines in the USN designed for open ocean, blue water operations. All previous submarines had been intended for harbor or coastal defense. These boats were intended to have greater speed and range than previous classes, with improved habitability and greater armament.
USS M-1 (SS-47) was a unique submarine of the United States Navy. M-1 was designed as a test bed for the newest technology in submarine construction and design. As well as being the world's first double-hulled design, her battery was of a new design and was to have solved some of the past flaws. While no other M-class submarines were built, the lessons learned were incorporated into the following AA-1 class.
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 constructed between World War I and World War II. An extensive study was conducted to determine the optimum submarine size under the treaty restrictions, factoring in total force, endurance, and percentage of the force that could be maintained on station far from a base, as in a Pacific war scenario. Joseph W. Paige of the Navy's Bureau of Construction and Repair (BuC&R) developed the basic design, but the builder, Electric Boat, was responsible for detailed arrangement; this was fairly bold, since Electric Boat had not built any new submarines since finishing four obsolescent boats for Peru. The previous V-boats were all built in naval shipyards. Cuttlefish was the first submarine built at EB's facility in Groton, Connecticut; construction of previous Electric Boat designs had been subcontracted to other shipyards, notably Fore River Shipbuilding of Quincy, Massachusetts.
The R-class submarines were a class of United States Navy submarines active from 1918 until 1945. With the first of the class laid down following the American entry into World War I, they were built rapidly. Although R-15 through R-20 were completed July–October 1918, they did not serve overseas, and the bulk of the class were not completed until after the Armistice.
The first USS Nevada, a monitor, was ordered on 4 May 1898. She was awarded to the Bath Iron Works, Bath, Maine on 19 October 1898 and laid down as Connecticut, 17 April 1899. Connecticut was launched 24 November 1900; sponsored by Miss Grace Boutelle; renamed Nevada, January 1901; and commissioned on 5 March 1903, Commander Thomas B. Howard in command. The total cost for the hull, machinery, armor and armament was $1,851,313.22.
The three Chester-class cruisers were the first United States Navy vessels to be designed and designated as fast "scout cruisers" for fleet reconnaissance. They had high speed but little armor or armament. They were authorized in January 1904, ordered in fiscal year 1905, and completed in 1908. In 1920 all scout cruisers were redesignated as "light cruisers" (CL).
The United States L-class submarines were a class of 11 submarines built 1914–1917, and were the United States Navy's first attempt at designing and building ocean-going submarines. At the time there was a significant gap in long-range submarine design compared with other major navies. The Group 2 L-boats designed by Lake Torpedo Boat Company were built to slightly different specifications from the other Group 1 L-boats and are sometimes considered a separate L-5 class.
The 3"/23 caliber gun was the standard anti-aircraft gun for United States destroyers through World War I and the 1920s. United States naval gun terminology indicates the gun fired a projectile 3 inches (76 mm) in diameter, and the barrel was 23 calibers long
United States Navy 
