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Convoy PQ 13
PQ 13 was a British Arctic convoy that delivered war supplies from the Western Allies to the USSR during World War II. The convoy was subject to attack by German air, U-boat and surface forces and suffered the loss of five ships, plus one escort vessel. Fifteen ships arrived safely. Ships PQ 13 comprised 19 merchant ships; seven British, four American, one Polish, four of Panamanian and one of Honduran registry. It was commanded by Commodore D. A. Casey in ''River Afton''. The convoy was escorted for the first stage of its voyage, from Scotland to Iceland, by a Local Escort Group, of two destroyers and an ASW Trawler. For the second stage, from Iceland to the Soviet Union, the Ocean escort was two destroyers and two trawlers, augmented by three whalers being transferred to the Soviet Navy. The Ocean escort was commanded by Capt. L. S. Saunders, in the cruiser . In support of the convoy escort, and guarding against a sortie by the , was a Heavy Cover Force, comprising the bat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reykjavík
Reykjavík is the Capital city, capital and largest city in Iceland. It is located in southwestern Iceland on the southern shore of Faxaflói, the Faxaflói Bay. With a latitude of 64°08′ N, the city is List of northernmost items, the world's northernmost capital of a sovereign state. Reykjavík has a population of around 139,000 as of 2025. The surrounding Capital Region (Iceland), Capital Region has a population of around 249,000, constituting around 64% of the country's population. Reykjavík is believed to be the location of the first permanent settlement in Iceland, which, according to , was established by Ingólfr Arnarson, Ingólfur Arnarson in 874 Anno Domini, AD. Until the 18th century, there was no urban development in the city location. The city was officially founded in 1786 as a trading town and grew steadily over the following decades, as it transformed into a regional and later Country, national centre of commerce, population, and governmental activities. Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Murmansk
Murmansk () is a port city and the administrative center of Murmansk Oblast in the far Far North (Russia), northwest part of Russia. It is the world's largest city north of the Arctic Circle and sits on both slopes and banks of a modest fjord, Kola Bay, an estuarine inlet of the Barents Sea, with its bulk on the east bank of the inlet. The city is a major port of the Arctic Ocean and is about from the Norway–Russia border, border with Norway, from the Finland–Russia border, border with Finland and from Moscow. Benefiting from the North Atlantic Current, Murmansk resembles cities of its size across western Russia, with highway and railway access to the rest of Europe, and the northernmost trolleybus system on Earth. Its connectivity contrasts with the isolation of Arctic ports like the Siberian Dikson (urban-type settlement), Dikson on the shores of the Kara Sea, and Iqaluit, in the Canadian Arctic. Despite long, snowy winters, Murmansk's climate is moderated by the generall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iceland
Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the region's westernmost and most list of countries and dependencies by population density, sparsely populated country. Its Capital city, capital and largest city is Reykjavík, which is home to about 36% of the country's roughly 380,000 residents (excluding nearby towns/suburbs, which are separate municipalities). The official language of the country is Icelandic language, Icelandic. Iceland is on a rift between Plate tectonics, tectonic plates, and its geologic activity includes geysers and frequent Types of volcanic eruptions, volcanic eruptions. The interior consists of a volcanic plateau with sand and lava fields, mountains and glaciers, and many Glacial stream, glacial rivers flow to the sea through the Upland and lowland, lowlands. Iceland i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whaler
A whaler or whaling ship is a specialized vessel, designed or adapted for whaling: the catching or processing of whales. Terminology The term ''whaler'' is mostly historic. A handful of nations continue with industrial whaling, and one, Japan, still dedicates a single factory ship for the industry. The vessels used by aboriginal whaling communities are much smaller and are used for various purposes over the course of the year. The ''whale catcher'' was developed during the Steam-powered vesselage , and then driven by diesel engines throughout much of the twentieth century. It was designed with a harpoon gun mounted at its bow and was fast enough to chase and catch rorquals such as the fin whale. At first, whale catchers either brought the whales they killed to a whaling station, a settlement ashore where the carcasses could be processed, or to its factory ship anchored in a sheltered bay or inlet. With the later development of the slipway at the ship's stern, whale cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SS Tobruk
''Tobruk'' was a cargo ship which was built in 1941 as ''Empire Builder'' by William Gray & Company Ltd for the Ministry of War Transport (MoWT). On completion she was handed over to the Polish government-in-exile (along with four others; '' Narwik'', ''Bałtyk'', ''Białystok'' and ''Borysław'', which in 1950 was renamed to ''Bytom'') and renamed ''Tobruk''. She was a member of a number of convoys during the Second World War. She was sold in 1951 to Polskie Linie Oceaniczne and served until 1967. She was scrapped in 1968. Description ''Empire Builder'' was built by William Gray & Sons Ltd, West Hartlepool. She was yard number 1123. ''Empire Builder'' was launched on 19 November 1941 and completed in January 1942. The ship was long, with a beam of and a depth of . She was propelled by a triple expansion steam engine which had cylinders of , and bore by stroke. The engine was built by Central Marine Engine Works, West Hartlepool. It could propel her at ''Empire Builder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whaler
A whaler or whaling ship is a specialized vessel, designed or adapted for whaling: the catching or processing of whales. Terminology The term ''whaler'' is mostly historic. A handful of nations continue with industrial whaling, and one, Japan, still dedicates a single factory ship for the industry. The vessels used by aboriginal whaling communities are much smaller and are used for various purposes over the course of the year. The ''whale catcher'' was developed during the Steam-powered vesselage , and then driven by diesel engines throughout much of the twentieth century. It was designed with a harpoon gun mounted at its bow and was fast enough to chase and catch rorquals such as the fin whale. At first, whale catchers either brought the whales they killed to a whaling station, a settlement ashore where the carcasses could be processed, or to its factory ship anchored in a sheltered bay or inlet. With the later development of the slipway at the ship's stern, whale cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asdic
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. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and sodar (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic) to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kola Inlet
Kola Bay () or Murmansk Fjord is a 57-km-long fjord of the Barents Sea that cuts into the northern part of the Kola Peninsula. It is up to 7 km wide and has a depth of 200 to 300 metres. The Tuloma, Rosta and Kola Rivers discharge into the bay. The eastern shore is craggy and precipitous, the western one is comparatively level. The ports of Murmansk and Severomorsk sit on the east side. Polyarny, the main base of Russia's Northern Fleet, is on the west side of the bay. Semidiurnal tides in the Murmansk Fjord are as high as 4 metres. In winter, the southern part of the bay may be covered in ice, though it is usually not thick enough to impede navigation, and Murmansk Murmansk () is a port city and the administrative center of Murmansk Oblast in the far Far North (Russia), northwest part of Russia. It is the world's largest city north of the Arctic Circle and sits on both slopes and banks of a modest fjord, Ko ... has traditionally been Russia's northernmost ice-free ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyroscope
A gyroscope (from Ancient Greek γῦρος ''gŷros'', "round" and σκοπέω ''skopéō'', "to look") is a device used for measuring or maintaining Orientation (geometry), orientation and angular velocity. It is a spinning wheel or disc in which the axis of rotation (spin axis) is free to assume any orientation by itself. When rotating, the orientation of this axis is unaffected by tilting or rotation of the mounting, due to the angular momentum#Conservation of angular momentum, conservation of angular momentum. Gyroscopes based on other operating principles also exist, such as the microchip-packaged Vibrating structure gyroscope#MEMS gyroscopes, MEMS gyroscopes found in electronic devices (sometimes called gyrometers), solid-state ring laser gyroscope, ring lasers, fibre optic gyroscopes, and the extremely sensitive quantum gyroscope. Applications of gyroscopes include inertial navigation systems, such as in the Hubble Space Telescope, or inside the steel hull of a submer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Destroyer Sokrushitelny (1937)
''Sokrushitelny'' () was one of 29 s (officially known as Project 7) built for the Soviet Navy during the late 1930s. Completed in 1939, she was initially assigned to the Baltic Fleet before she was transferred to the Northern Fleet in late 1939. After the Axis invasion of the Soviet Union in June 1941, the ship laid several minefields in the White and Barents Seas. ''Sokrushitelny'' spent most of her service escorting the Arctic Convoys, run by the British to provide weapons and supplies to the Soviets, or providing naval gunfire support to Soviet troops along the Arctic coast. The ship engaged a German ship just once, while defending Convoy QP 13 in early 1942. While escorting Convoy QP 15 in November, she sank during a severe storm after breaking in half. Most of her crew was rescued by other destroyers sent to her aid, although 35 crewmen were lost. Design and description Having decided to build the large and expensive destroyer leaders, the Soviet Navy sought Italian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
