surface sonar
51Talwar class frigate — The Talwar class is a new class of frigates built for the Indian Navy. The Talwar class guided missile frigates, also known as the Type 1135.6, are modified Krivak III class frigates from Russia. The Talwar Class has a displacement of 4,000 tons… …
52Thales Underwater Systems — (TUS), formerly known as Thomson Marconi Sonar, is an international defence manufacturer specialising in sonar systems for submarines and surface warships, and airborne sonar systems as well as communications masts and systems for submarines. TUS …
53USS Carpenter (DD-825) — following her FRAM I refit Career (USA) …
54USS Triton (SSRN-586) — USS Triton (SSRN/SSN 586), a U.S. Navy nuclear powered radar picket submarine, was the first vessel to execute a submerged circumnavigation of the Earth, accomplishing this during her shakedown cruise in early 1960. She also has the distinction… …
55USS Berkeley (DDG-15) — Career (United States) …
56History of submarines — The history of submarines covers the historical chronology and facts related to submarines , manned autonomous boats that operate underwater. It includes the history of submersibles , which were designed primarily to operate on the surface, and… …
57Underwater searches — are procedures carried out by divers in order to find a known or suspected target object or objects in a specified search area under water. There are a number of techniques in general use by Commercial, Scientific, Public service, Military, and… …
58Pelagic fish — A school of large pelagic predator fish (giant trevally) sizing up a school of small pelagic prey fish (anchovies) Pelagic fish live near the surface or in the water column of coastal, ocean and lake waters, but not on the bottom of the sea or… …
59Naval mine — Polish wz. 08/39 contact mine. The protuberances around the top of the mine, called Hertz horns, are part of the detonation mechanism …
60USS Tunny (SS-282) — The USS Tunny (SS/SSG/APSS/LPSS 282) was a Gato class submarine which saw service in World War II and in the Vietnam War. Tunny received nine battle stars and two Presidential Unit Citation (US)s for her World War II service and five battle stars …
