Type UB III submarineThe Type UB III submarine was a class of a U-boat built during World War I by the German Imperial Navy. DesignWhen it became clear that unrestricted submarine warfare would be resumed in 1916, the German Navy sought a way to speed up submarine construction.
World War IIGlobal conflict from 1939 to 1945BelligerentsAlliesAxisCommanders and leadersMain Allied leaders: Joseph StalinFranklin D. RooseveltWinston ChurchillChiang Kai-shekMain Axis leaders: Adolf HitlerHirohitoBenito MussoliniCasualties and losses 60–75 million deaths (military and civilian) World War II, or the Second World War (1 September 1939 – 2 September 1945), was a global conflict between two coalitions: the Allies and the Axis powers.
U-boatU-boats are naval submarines operated by Germany, especially during World War I and World War II. The term is an anglicized form of the German word U-Boot, a shortening of Unterseeboot (lit.'under-sea boat'). Austro-Hungarian Navy submarines were also known as U-boats. U-boats are especially known for their use in unrestricted submarine warfare in both world wars, attempting to disrupt merchant traffic towards the United Kingdom to force them out of the war.
Battle of the AtlanticNaval campaign in World War IIBelligerentsUnited KingdomUnited StatesSoviet UnionCanadaBrazilOther participants:Norway France PolandNetherlandsBelgiumGreece Australia New ZealandNewfoundland India South Africa Germany ItalyCommanders and leadersLeonard W. MurrayDudley Pound #Andrew CunninghamMartin Dunbar-NasmithPercy NobleMax HortonFrederick BowhillPhilip de la FertéJohn SlessorRoyal E. IngersollJonas H. IngramErich RaederKarl DönitzH.G. von FriedeburgEberhard GodtAlfred SaalwächterWilhelm MarschallTheodor KranckeMartin HarlinghausenUlrich KesslerAngelo ParonaRomolo PolacchiniEnzo GrossiCasualties and losses36,200 killed (naval)36,000 killed (merchant navy)3,500 merchant vessels lost175 warships lost741 RAF Coastal Command aircraft lost in anti-submarine sorties ≈30,000 U-boat sailors killed783 submarines lost47 other warships lost c. 500 killed17 submarines lostThe Battle of the Atlantic, the longest continuous military campaign in World War II, ran from 1939 to the defeat of Nazi Germany in 1945, covering a major part of the naval history of World War II.
World War IGlobal conflict from 1914 to 1918BelligerentsAllied Powers: France United Kingdom and Empire:Australia Canada Ceylon EgyptNewfoundlandNew Zealand India South Africa Russia (until 1917) Italy (from 1915) United States(from 1917) Japanand others ...Central Powers: GermanyAustria-HungaryOttoman Empire Bulgaria (from 1915)and others ...Commanders and leadersCasualties and losses 15–22 million deaths (military and civilian)World War I, or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers.
KriegsmarineThe Kriegsmarine (German pronunciation:, lit.'War Navy') was the navy of Nazi Germany from 1935 to 1945. It superseded the Imperial German Navy of the German Empire (1871–1918) and the inter-war Reichsmarine (1919–1935) of the Weimar Republic. The Kriegsmarine was one of three official branches, along with the Heer and the Luftwaffe, of the Wehrmacht, the German armed forces from 1935 to 1945.
Vetehinen-class submarineThe Vetehinen-class submarine was a Finnish 500-tonne submarineclass of three vessels that was designed and built in the 1920s and early 1930s. The Vetehinen class served in the Finnish Navy during World War II.
SonarAcoustic sensing methodFrench F70 type frigates (here, La Motte-Picquet) are fitted with variable depth sonar (VDS) type DUBV43 or DUBV43C towed sonars.A sonar image of the Soviet Navy minesweeper T-297, formerly the Latvian Virsaitis, which was shipwrecked in December 1941 in the Gulf of Finland.Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances (ranging), communicate with or detect objects on or under the surface of the water, such as other vessels.
Atlantic OceanThe Atlantic Ocean is the second largest of the world's five oceans, with an area of about 85,133,000 square kilometers (32,870,000 sq mi). It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for separating the New World of the Americas (North America and South America) from the Old World of Afro-Eurasia (Africa, Asia, and Europe).
Nazi GermanyGerman state from 1933 to 1945Nazi Germany, officially the German Reich and later the Greater German Reich, was the German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a totalitarian dictatorship. The Third Reich, meaning "Third Realm" or "Third Empire", referred to the Nazi claim that Nazi Germany was the successor to the Holy Roman Empire (800–1806) and the German Empire (1871–1918).
Ship classA ship class is a group of ships of a similar design. This is distinct from a ship type, which might reflect a similarity of tonnage or intended use. For example, USS Carl Vinson is a nuclear aircraft carrier (ship type) of the Nimitz class (ship class). In the course of building a class of ships, design changes might be implemented.Submarine depth ratingsDepth ratings are primary design parameters and measures of a submarine's ability to operate underwater. The depths to which submarines can dive are limited by the strengths of their hulls.*As an Amazon Associate I earn from qualifying purchases.