A submarine is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as boats rather than ships irrespective of their size.
USS Holland (SS-1) was the United States Navy's first modern commissioned submarine, although not the first military submarine of the United States, which was the 1775 submersible Turtle. The boat was originally laid down as Holland VI at the Crescent Shipyard of Elizabeth, New Jersey for John Philip Holland's Holland Torpedo Boat Company, and launched on 17 May 1897. She was acquired by the USN on 11 April 1900 and commissioned on 12 October 1900, Lieutenant H. H. Caldwell commanding.
Tench-class submarines were a type of submarine built for the United States Navy (USN) between 1944 and 1951. They were an improvement over the Gato and Balao classes, only about 35 to 40 tons larger, but more strongly built and with a slightly improved internal layout. One of the ballast tanks was converted to carry fuel, increasing range from 11,000 nautical miles to 16,000 nautical miles. This improvement was also made on some boats of the previous two classes. Further improvements were made beginning with SS-435, which are sometimes referred to as the Corsair class. Initial plans called for 80 to be built, but 51 were cancelled in 1944 and 1945 when it became apparent that they would not be needed to defeat Japan. The remaining 29 were commissioned between October 1944 (Tench) and February 1951 (Grenadier). The last submarine of the Tench class, as well as the last submarine which served during World War II, remaining in service with the U.S. Navy was USS Tigrone (AGSS-419) which was decommissioned on 27 June 1975.
The Plunger class was an early class of United States Navy submarines. In the first years of their service, they were used primarily as training and experimental vessels for the newly formed "silent service" to familiarize naval personnel with the performance and operations of such craft. They were known as the "A class" after being renamed to A-type designations on 17 November 1911. All except Plunger ended up being stationed in the Philippines, an American possession, prior to the outbreak of World War I. They were shipped there on colliers and formed an integral part of the harbor defense system for Manila. In some instances, this class of submarines is referred to as the Adder class, as USS Adder was the first boat of the class to be completed.
The Holland 602 type submarine, also known as the H-class submarine, was one of the most numerous submarines of World War I. The type was designed by the Electric Boat Co. of the United States, but most of the boats were built abroad: in Canada by the subsidiary of the British Vickers company and in British shipyards.
The Yasen class, Russian designations Project 885 Yasen and Project 885M Yasen-M, also referred to as the Graney class, are a series of nuclear-powered cruise missile submarines designed by the Malakhit Marine Engineering Bureau and built by Sevmash for the Russian Navy. Design work commenced in earnest in the 1980s with the first submarine built in the 1990s–early 2010s with commissioning in 2013. Two additional boats to an upgraded Yasen-M design were commissioned in 2021 and six more are under construction. Based on the Akula class and Alfa class designs, the Yasen class is projected to replace the Russian Navy's current Soviet-era nuclear attack submarines. The Akula class is optimised for a hunter-killer role, whereas the Yasen class concept uses the platform as a nuclear guided missile submarine (SSGN).
The S-class or Srednyaya submarines were part of the Soviet Navy's underwater fleet during World War II. Unofficially nicknamed Stalinets, boats of this class were the most successful and achieved the most significant victories among all Soviet submarines. In all, they sank 82,770 gross register tons (GRT) of merchant shipping and seven warships, which accounts for about one-third of all tonnage sunk by Soviet submarines during the war.
Krab was a submarine built for the Imperial Russian Navy. She was designed by Mikhail Petrovich Nalyotov as the world's first submarine minelayer, although due to construction delays the German UC submarines entered service earlier. The mines were stowed in two horizontal galleries exiting through the stern. Diving depth was 45 metres. This ship was built by the Naval yard in Nikolayev by the Black Sea. She was ordered in 1908, launched in September 1912 and entered service in 1915.
The United States H-class submarines were Electric Boat design EB26A and EB26R design coastal patrol submarines used by the United States Navy.
The American Holland-class submarines, also AG class or A class, were Holland 602 type submarines used by the Imperial Russian and Soviet Navies in the early 20th century. The small submarines participated in the World War I Baltic Sea and Black Sea theatres and a handful of them also saw action during World War II.
The Karp class were a class of submarines built by Krupp Germaniawerft for the Imperial Russian Navy. The class, composed of three boats were ordered in the 1904 emergency programme as a result of the Russo-Japanese War. The design was a twin hull type powered by a kerosene-electric power plant with a 16-fathom diving limit. The boats were delivered late for the war and transferred to the Black Sea Fleet by rail in 1908. In 1909, Kambala was lost. The other two submarines remained in service until their withdrawal in March 1917. They were taken over in April 1918 by the Ukrainian State before being captured by the German Empire in May and transferred to the British following the German surrender in November. The British scuttled Karp and Karas in 1919 to prevent their capture by the Soviets.
The Morzh-class submarines were built for the Black Sea Fleet of the Imperial Russian Navy shortly before World War I.
The Kasatka class was a class of submarines built for the Imperial Russian Navy. The six boats were built between 1904 and 1905. They were designed by I. G. Bubnov and were based on the Delfin. The first boat, Kasatka, experienced significant problems with stability on trials and had to have extra flotation added. In 1905, four of the class were transferred from Western Russia to Vladivostok with the outbreak of the Russo-Japanese War. Initially powered by a kerosene/electrical system, the boats were re-built around 1910 with a diesel-electric power plant following the end of the war. The class remained in service throughout World War I. Two were captured by the German Empire in 1918 and handed over to the British following the German surrender. They were scuttled by the British in 1919 to prevent their capture by the Soviets. The remaining four were broken up for scrap in 1922.
B-585 Sankt Peterburg is the lead boat of the Lada-class submarines of the Russian Navy. The Lada class is the fourth generation of diesel-electric submarines designed and constructed in the former Soviet Union and Russia to replace the Kilo class. Construction of the boat started in December 1997, and she was launched in October 2004. After undergoing a series of sea trials, Sankt Peterburg was commissioned in May 2010. However, the Russian Navy decided not to accept the St. Petersburg class after it was discovered that the boat's propulsion and sonar systems were inadequate. After design corrections the submarine was accepted. In 2014, Sankt Peterburg joined the Northern Fleet. In 2023, it was reported that due to the extremely high costs of modernising the submarine, the Sankt Peterburg was to be decommissioned and scrapped, with the funds being diverted to new submarine construction.
Following the dissolution of the Soviet Union at the end of 1991, the Russian Navy struggled to adjust Cold War force structures while suffering severely with insufficient maintenance and a lack of funding. However, improvements in the Russian economy over the first decade of the twenty-first century led to a significant rise in defence expenditure and an increase in the number of ships under construction.
Kommuna is a submarine rescue ship in service with the Russian Navy's Black Sea Fleet and the world's oldest active duty naval vessel.
The French submarine Mariotte was a submarine built for the French Navy prior to World War I. Intended to accompany the fleet, she was designed for high speed on the surface. Although the navy was unsatisfied with her performance on the surface, the boat had a higher underwater speed than any French submarine before or during the following 35 years. Mariotte was plagued with engine problems during her construction and the navy spent years fixing the various issues before finally commissioning her five years after beginning construction. During the war, she participated in the Dardanelles Campaign, but had to be scuttled after she became entangled in the cables of a minefield on her first attempt to penetrate the Dardanelles.
French submarine Narval (“Narwhal”) was a pioneering vessel of the French Navy, designed by Maxime Laubeuf and built at the end of the 19th century. She was designed in response to a competition set by the French Admiralty and had several revolutionary features which set the pattern for submarines for the next 50 years.
The Naïade-class submarines, sometimes referred to as the Perle class were a group of submarines built for the French Navy at the beginning of the 20th century. There were twenty vessels in this class, which was designed by Gaston Romazotti. The class introduced internal combustion engines into French submarine design. They remained in service until just prior to the outbreak of the First World War.
The K-331 Magadan is an Akula-class submarine in the Russian Navy.
