HMS Upholder (P37) was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness. She was laid down on 30 October 1939, launched on 8 July 1940 by Mrs. Doris Thompson, wife of a director of the builders. The submarine was commissioned on 31 October 1940. She was one of four U-class submarines which had two external torpedo tubes at the bows in addition to the 4 internal ones fitted to all boats. They were excluded from the others because they interfered with depth-keeping at periscope depth.
This is a timeline for the Battle of the Atlantic (1939–1945) in World War II.
The Halcyon class was a class of 21 oil-fired minesweepers built for the British Royal Navy between 1933 and 1939. They were given traditional small ship names used historically by the Royal Navy and served during World War II.
Convoy PQ 18 was an Arctic convoy of forty Allied freighters from Scotland and Iceland to Arkhangelsk in the Soviet Union in the war against Nazi Germany. The convoy departed Loch Ewe, Scotland on 2 September 1942, rendezvoused with more ships and escorts at Iceland and arrived at Arkhangelsk on 21 September. An exceptionally large number of escorts was provided by the Royal Navy in Operation EV, including the first escort carrier to accompany an Arctic convoy. Detailed information on German intentions was provided by the code breakers at Bletchley Park and elsewhere, through Ultra signals decrypts and eavesdropping on Luftwaffe wireless communications.
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.
The Northern Barrage was the name given to minefields laid by the British during World War II to restrict German access to the Atlantic Ocean. The barrage stretched from the Orkney to the Faroe Islands and on toward Iceland. Mines were also laid in the Denmark Strait, north of Iceland.
MV Atheltemplar was a motor tanker built by Lithgows, Port Glasgow. She was launched on 15 April 1930, registered in Liverpool and operated by the United Molasses Co Ltd of London. She was transferred to Athel Lines on 1 January 1940.
Convoy SC 42 was the 42nd of the numbered series of World War II Slow Convoys of merchant ships from Sydney, Cape Breton Island to Liverpool. SC 42 was attacked over a three night period in September 1941, losing 16 ships sunk and 4 damaged. This was the worst Allied loss following the attack on convoy SC 7 the previous year. Two attacking U-boats were destroyed.
HMS Britomart was a Halcyon-class minesweeper of the Royal Navy. She served during the Second World War and was sunk in 1944 in a friendly fire incident. The actor Robert Newton served aboard her until 1943.
German submarine U-203 was a German Type VIIC submarine U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
Z16 Friedrich Eckoldt was a Type 1934A-class destroyer built for Nazi Germany's Kriegsmarine in the late 1930s. It was named after Kapitänleutnant Friedrich Eckoldt (1887–1916), the commander of torpedo boat V 48, who was killed when his boat was sunk during the Battle of Jutland on 31 May 1916.
British Corporal was a 6,972 GRT tanker that was built in 1922 by Palmers Shipbuilding and Iron Company, Jarrow, Northumberland, United Kingdom. She was built for the British Tanker Company.
German submarine U-435 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 11 April 1940 by F Schichau GmbH in Danzig as yard number 1477, launched on 31 May 1941 and commissioned on 30 August 1941 under Korvettenkapitän Siegfried Strelow.
Arctic naval operations of World War II were the World War II naval operations that took place in the Arctic Ocean, and can be considered part of the Battle of the Atlantic and/or of the European Theatre of World War II.
Convoy QP 11 was an Arctic Convoy of World War II, made up of merchant ships returning from the Soviet Union to Britain after delivering their cargo to the Soviet Union. The convoy consisted of 13 merchant ships, escorted by 18 warships. The convoy was attacked by German destroyers and submarines, suffering the loss of one merchant ship as well as the light cruiser HMS Edinburgh. The German forces lost the destroyer Z7 Hermann Schoemann.
Convoy QP 10 was an Arctic convoy of World War II, consisting of empty merchant ships returning from the Soviet Union after delivering their cargo there. The convoy consisted of 16 merchant ships and an escort of nine warships. The convoy departed Murmansk on 10 April 1942 and arrived in Reykjavik on 21 April. The convoy was attacked by German U-boats and aircraft, resulting in the loss of four merchant ships. Another ship, Stone Street, was damaged by air attack and forced to turn back to the Kola Inlet. The convoy's escorts shot down six German planes and damaged another during the course of the voyage. Later, six merchant ships from Convoy PQ 14 joined QP 10.
Convoy QP 13 was an Arctic convoy of the PQ/QP series which ran during the Second World War. It was the thirteenth of the numbered series of convoys of merchant ships westbound from the Arctic ports of Arkhangelsk and Murmansk to the United Kingdom, Iceland, and North America.
Convoy HG 53 was the 53rd of the numbered series of World War II HG convoys of Homeward bound merchant ships from Gibraltar to Liverpool. Convoy HG 53 lost nine ships during a coordinated attack in February 1941. HG 53 was one of the few Atlantic convoys to have ships sunk by submarines, by aircraft, and by surface ships.
HMS Sharpshooter was a Halcyon-class minesweeper of the British Royal Navy. Built at Devonport Dockyard, Sharpshooter was completed in 1937. She served through the Second World War, acting both in her designed role as minesweeper and as a convoy escort, escorting several Arctic convoys. She took part in the evacuation from Dunkirk in 1940, and sank the German submarine U-655 in 1942.
SS John Randolph was a Liberty ship built in the United States during World War II. She was named after John Randolph, a planter and a Congressman from Virginia who served in the House of Representatives at various times between 1799 and 1833 and the Senate from 1825 to 1827. He was also Minister to Russia under President Andrew Jackson in 1830.
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