HMS Vidette (D48) was an Admiralty V-class destroyer of the Royal Navy. Built at the end of the First World War, she served in the final months of that conflict, and saw extensive service in the inter war years and in World War II. She was an effective convoy escort and U-boat killer, being credited with the destruction of five U-boats during the Battle of the Atlantic. HMS Vidette transported Spike Island Republican Prisoners to Bere Island Internment Camp in 1921. *Refer Spike Island’s Republican Prisoners, 1921 by Tom O’Neill MA.
Admiral Sir Max Kennedy Horton, was a British submariner during the First World War and commander-in-chief of the Western Approaches in the later half of the Second World War, responsible for British participation in the Battle of the Atlantic.
HMS Safari was a third batch S-class submarine built for the Royal Navy during World War II. Commissioned in 1942, she was assigned to operate in the Mediterranean Sea. During the course of the war, Safari sank twenty-five ships, most of which were Italian.
German submarine U-759 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 15 November 1940 at the Kriegsmarinewerft yard at Wilhelmshaven, launched on 30 May 1942, and commissioned on 15 August 1942 under the command of Oberleutnant zur See Rudolf Friedrich.
German submarine U-43 was a Type IXA U-boat of Nazi Germany's Kriegsmarine during World War II. The keel for U-43 was laid down in August 1938 at Bremen; she was launched in May 1939 and commissioned in August.
The Type 35 torpedo boat was a class of a dozen torpedo boats built for Nazi Germany's Kriegsmarine in the late 1930s. Although the first boats were completed a few months after the start of World War II in September 1939, none of them were able to participate in the Norwegian Campaign of April–June 1940. They began escorting convoys and minelayers as they laid their minefields in the North Sea and English Channel in July. Most of the boats were transferred to Norway in November where they made an unsuccessful attempt to attack shipping along the Scottish coast that saw one boat sunk.
USS Joyce (DE-317) was originally commissioned as a US Coast Guard Edsall-class destroyer escort built for the U.S. Navy during World War II. She served in the Atlantic Ocean and the Pacific Ocean and provided destroyer escort protection against submarine and air attack for Navy vessels and convoys. During its World War II service, on two different engagements with enemy submarines, the Joyce rescued survivors of the tanker SS Pan- Pennsylvania and its sister ship USS Leopold. Joyce received one battle star for its service during World War II.
Vorpostenboot, also referred to as VP-Boats, flakships or outpost boats, were German patrol boats which served during both World Wars. They were used around coastal areas and in coastal operations, and were tasked with – among other things – coastal patrol, ship escort, and naval combat.
Naval trawlers are vessels built along the lines of a fishing trawler but fitted out for naval purposes; they were widely used during the First and Second World Wars. Some—known in the Royal Navy as "Admiralty trawlers"— were purpose-built to naval specifications, others adapted from civilian use. Fishing trawlers were particularly suited for many naval requirements because they were robust vessels designed to work heavy trawls in all types of weather, and had large clear working decks. A minesweeper could be created by replacing the trawl with a mine sweep. Adding depth charge racks on the deck, ASDIC sonar below, and a 3-inch (76 mm) or 4-inch (102 mm) gun in the bow equipped the trawler for anti-submarine duties.
HMS Wrestler (D35) was a V and W-class destroyer built by the Royal Navy during the First World War and active from 1939 to 1944 during the Second World War. She was the first Royal Navy ship to bear that name, and the only one to do so to date.
HMS Tynedale was a Hunt-class destroyer of the first subgroup which served during the Second World War. She was sunk by the U-593 on 12 December 1943.
German submarine U-456 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 3 September 1940 by Deutsche Werke in Kiel as yard number 287, launched on 21 June 1941 and commissioned on 18 September 1941 under Kapitänleutnant Max-Martin Teichert.
The Arctic Circle defining the "midnight sun" encompasses the Atlantic Ocean from the northern edge of Iceland to the Bering Strait in the Pacific Ocean. Military activity in this area between 1939 and 1945 is often considered part of the Battle of the Atlantic or of the European Theatre of World War II. Pre-war navigation focused on fishing and the international ore-trade from Narvik and Petsamo. Soviet settlements along the coast and rivers of the Barents Sea and Kara Sea relied upon summer coastal shipping for supplies from railheads at Arkhangelsk and Murmansk. The Soviet Union extended the Northern Sea Route past the Taymyr Peninsula to the Bering Strait in 1935.
The second HMS Exmoor (L08), ex-HMS Burton, was a Hunt-class destroyer of the Royal Navy in commission from 1941 to 1945. She was a member of the second subgroup of the class, and saw service during much of World War II. She later served in the Royal Danish Navy as HDMS Valdemar Sejr.
HMS Vivacious (D36) was a V-class destroyer of the British Royal Navy that saw service in World War I and World War II.
HMS Vivien (L33) was a V-class destroyer of the British Royal Navy that saw service in World War I and World War II.
The third HMS Windsor (D42) was a W-class destroyer of the British Royal Navy that saw service in the final months of World War I and in World War II.
The eighth HMS Worcester, was a Modified W-class destroyer of the British Royal Navy that saw service in World War II. She later served as an accommodation ship as the second HMS Yeoman.
A type commander in the Kriegsmarine was a permanently assigned administrative officer in the organization of the Kriegsmarine which oversaw the development, deployment, and in some cases operational activities of the various classes of German naval vessels. Due to cross jurisdiction with the Navy group commanders, who tactically commanded all vessels at sea, some type commanders were little more than ceremonial officers who held a title with little authority. Others, such as Karl Dönitz who commanded the German U-boat force, exercised near total independence and held enormous authority, both operationally and administrative.
The German patrol boat PA 2 was a captured French vessel in the service of the Kriegsmarine in the 15 Vorpostenflotille as a Channel convoy escort throughout the latter half of World War II.
Nazi Germany 
