depth charge attack indicator
1Attack on Sydney Harbour — Infobox Military Conflict conflict=Attack on Sydney Harbour partof=the Battle for Australia during World War II caption=1 June 1942. A Japanese Ko hyoteki class midget submarine, believed to be Midget No. 14, is raised from Sydney Harbour date=31 …
2Anti-submarine weapon — An anti submarine weapon is any one of a range of devices that are intended to act against a submarine, and its crew, to destroy (sink) the vessel or to destroy or reduce its capability as a weapon of war. An anti submarine weapon can be… …
3USS Halibut (SS-232) — USS Halibut (SS 232), a Gato class submarine, was the first ship of the United States Navy to be named for the halibut, a large species of flatfish found on both sides of the Atlantic. Her keel was laid down by the Portsmouth Naval Shipyard of… …
4Anti-submarine warfare — (ASW or in older form A/S) is a branch of naval warfare that uses surface warships, aircraft, space craft or other submarines to find, track and then damage or destroy enemy submarines. Like many forms of warfare, successful anti submarine… …
5Battle of the Atlantic (1939–1945) — Infobox Military Conflict conflict = Battle of the Atlantic partof = World War II caption = Officers on the bridge of an escorting British destroyer keep a sharp look out for enemy submarines, October 1941 date = September 3 1939 May 7 1945 place …
6photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
7Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …
8de Havilland Mosquito — DH.98 Mosquito The Mosquito B Mk XVI ML963 of 571 Squadron this aircraft was lost on an operation to Berlin in April 1945 …
9B class destroyer — The B class was a class of nine destroyers of the British Royal Navy, ordered as part of the 1928 Naval Estimates, launched in 1930 and that commissioned in 1931. The class was similar to the preceding A class, with minor modifications. They saw… …
10USS Tarpon (SS-175) — USS Tarpon (SS 175), second ship of this name, was laid down on 22 December 1933 at Groton, Connecticut, by the Electric Boat Corporation; launched on 4 September 1935; sponsored by Miss Eleanore Katherine Roosevelt, daughter of Assistant… …
