L-class Submarine (other)
L class submarine may refer to: *British L-class submarine *United States L-class submarine *Leninets-class submarine, of the Soviet Navy *Japanese Type L submarine The submarines were medium-sized submarines of the Imperial Japanese Navy (IJN), serving during the 1920s and World War II. The ''Type L'' submarines were built with Vickers naval technical guidance. All boats were built in the Mitsubishi He ...

British L-class Submarine
The British L-class submarine was originally planned under the emergency war programme as an improved version of the British E-class submarine. The scale of change allowed the L class to become a separate class. The armament was increased when the 21-inch torpedoes came into service. The Group 3 boats had two QF 4-inch guns fore and aft of the lengthened conning tower. Also, 76 tons of fuel oil was carried in external wing tanks for the first time in British submarines. Several of the Group 1 boats were configured as minelayers including ''L11'' and ''L12''. In the Group 2 boats, ''L14'', ''L17'' and ''L24'' to ''L27'' were built as minelayers carrying 16 mines but without the two beam torpedo tubes. The introduction of the L class came too late to contribute significantly in World War I. was accidentally depth-charged by three American destroyers in early 1918. torpedoed the German submarine . torpedoed the German destroyer ''S33'' in October 1918 but was sunk by acco ...
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United States L-class Submarine
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 (''L-5'' through ''L-8'') were built to slightly different specifications from the other ''Group 1'' L-boats (which were designed by Electric Boat) and are sometimes considered a separate L-5 class. Service After service in the Atlantic Flotilla by the Group 1 boats, most required extensive refits at Philadelphia after the USA's entry into the First World War, which reflected the US Navy's then-limited experience in submarine ocean operations. In December 1917, the seven boats were sent to Bantry Bay as Submarine Division 5 for convoy escort and anti-U-boat patrols. The four new Group 2 L-boats later deployed to the Azores in November ...
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Leninets-class Submarine
The ''Leninets'' or L class were the second class of submarines to be built for the Soviet Navy. Twenty-five were built in four groups between 1931 and 1941. They were minelaying submarines and were based on the British L-class submarine, , which was sunk during the British intervention in the Russian Civil War. Some experience from the previous s was also utilised. The boats were of the saddle tank type and mines were carried in two stern galleries as pioneered on the pre-war Russian submarine Krab (1912), the world's first minelaying submarine. These boats were considered successful by the Soviets. Groups 3 and 4 had more powerful engines and a higher top speed. Ships Group 1 Six ships were built (L1 to L6), all launched in 1931. Three were assigned to the Baltic Fleet and three to the Black Sea Fleet, including Soviet submarine L-3 The World War II Soviet submarine ''L-3'' belonged to the L-class or ''Leninets'' class of minelayer submarines. It had been named ''Bolshevik ...
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