The Gato class of submarines were built for the United States Navy and launched in 1941–1943. Named after the lead ship of the class, USS Gato, they were the first mass-production U.S. submarine class of World War II.
USS Triton (SSRN/SSN-586), the only member of her class, was a nuclear powered radar picket submarine in the United States Navy. She had the distinction of being the only Western submarine powered by two nuclear reactors. Triton was the second submarine and the fourth vessel of the United States Navy to be named for the Greek god Triton, At the time of her commissioning in 1959, Triton was the largest, most powerful, and most expensive submarine ever built at $109 million excluding the cost of nuclear fuel and reactors.
The Balao class was a successful design of United States Navy submarine used during World War II, and with 120 boats completed, the largest class of submarines in the United States Navy. An improvement on the earlier Gato class, the boats had slight internal differences. The most significant improvement was the use of thicker, higher yield strength steel in the pressure hull skins and frames, which increased their test depth to 400 feet (120 m). Tang actually achieved a depth of 612 ft (187 m) during a test dive, and exceeded that test depth when taking on water in the forward torpedo room while evading a destroyer.
USS Razorback (SS-394), a Balao-class submarine, was the only ship of the United States Navy to be named after the razorback, a species of whale found in the far southern reaches of the Pacific Ocean. She is arguably the longest-serving combat front-line submarine still existing in the world, having been commissioned by two different countries for 56 years of active duty. She was in Tokyo Bay during the surrender of Japan. In 2004, the state of Arkansas adopted the submarine and she is now a museum ship at the Arkansas Inland Maritime Museum.
An electronic countermeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar, or other detection systems, like infrared (IR) or lasers. It may be used both offensively and defensively to deny targeting information to an enemy. The system may make many separate targets appear to the enemy, or make the real target appear to disappear or move about randomly. It is used effectively to protect aircraft from guided missiles. Most air forces use ECM to protect their aircraft from attack. It has also been deployed by military ships and recently on some advanced tanks to fool laser/IR guided missiles. It is frequently coupled with stealth advances so that the ECM systems have an easier job. Offensive ECM often takes the form of jamming. Self-protecting (defensive) ECM includes using blip enhancement and jamming of missile terminal homers.
German submarine U-234 was a Type XB U-boat of Nazi Germany's Kriegsmarine during World War II, she was commanded by Kapitänleutnant Johann-Heinrich Fehler. Her first and only mission into enemy or contested territory consisted of the attempted delivery of uranium oxide and German advanced weapons technology to the Empire of Japan. After receiving Admiral Dönitz' order to surface and surrender and of Germany's unconditional surrender, the submarine's crew surrendered to the United States on 14 May 1945.
USS Bergall (SS-320), a Balao-class submarine in commission from 1944 to 1958, was the first ship of the United States Navy to be named for the bergall, a small fish of the New England coast. During World War II she made five war patrols between 8 September 1944 and 17 June 1945, operating in the South China Sea, Java Sea, and Lombok Strait and north of the Malay Barrier. During these patrols she sank two Japanese merchant ships totaling 14,710 gross register tons and one 740-displacement ton Imperial Japanese Navy frigate. She also damaged the Japanese heavy cruiser Myōkō, which was never repaired.
The Porpoise class were submarines built for the United States Navy in the late 1930s, and incorporated a number of modern features that would make them the basis for subsequent Salmon, Sargo, Tambor, Gato, Balao, and Tench classes. In some references, the Porpoises are called the "P" class.
USS Becuna (SS/AGSS-319), a Balao-class submarine in commission from 1944 to 1969, was ship of the United States Navy named for the becuna, a pike-like fish of Europe. During World War II, she conducted five war patrols between August 23, 1944 and July 27, 1945, operating in the Philippine Islands, South China Sea, and Java Sea. She is credited with sinking two Japanese tankers totaling 3,888 gross register tons.
USS Bugara (SS-331), a Balao-class submarine in commission from 1944 to 1970, was a ship of the United States Navy named for the bugara, a multicolored fish found along the coast of California.
A sonobuoy is a relatively small buoy – typically 13 cm (5 in) diameter and 91 cm (3 ft) long – expendable sonar system that is dropped/ejected from aircraft or ships conducting anti-submarine warfare or underwater acoustic research.
USS Cobia (SS/AGSS-245) is a Gato-class submarine, formerly of the United States Navy, named for the cobia.
A radar picket is a radar-equipped station, ship, submarine, aircraft, or vehicle used to increase the radar detection range around a nation or military force to protect it from surprise attack, typically air attack, or from criminal activities such as smuggling. By definition a radar picket must be some distance removed from the anticipated targets to be capable of providing early warning. Often several detached radar units would be placed in a ring to encircle a target to provide increased cover in all directions; another approach is to position units to form a barrier line.
USS Annapolis (AGMR-1) was the former USS Gilbert Islands and a Commencement Bay-class escort carrier of the United States Navy.
Carrier Air Wing Six (CVW-6) was a United States Navy aircraft carrier air wing whose operational history spans from the middle of World War II to the end of the Cold War. Established in 1943 as Carrier Air Group Seventeen (CVG-17), it would be re-designated several times during its establishment, including Carrier Air Group Six (CVG-6) as the second unit to be so designated. The first Carrier Air Group Six served for just over two years during World War II, but drew on the history of the Enterprise Air Group established in 1938 and active in the early battles of the Pacific War, being disestablished after the first year of the conflict. During its time in USS Enterprise (CV-6), it was the Navy's only carrier-based air group to carry out three complete tours of duty during World War II.
Hatsutaka was the lead vessel in the Hatsutaka-class of medium-sized minelayers of the Imperial Japanese Navy, which was in service during World War II. She was designed as an improved version of Shirataka anti-submarine netlayer. However, during the Pacific War, due to the critical shortage of escort patrol ships, she was fitted with depth charge racks, her minelaying rails were removed, and she was used primarily for convoy escort duties.
Radar in World War II greatly influenced many important aspects of the conflict. This revolutionary new technology of radio-based detection and tracking was used by both the Allies and Axis powers in World War II, which had evolved independently in a number of nations during the mid 1930s. At the outbreak of war in September 1939, both Great Britain and Germany had functioning radar systems. In Great Britain, it was called RDF, Range and Direction Finding, while in Germany the name Funkmeß (radio-measuring) was used, with apparatuses called Funkmessgerät . By the time of the Battle of Britain in mid-1940, the Royal Air Force (RAF) had fully integrated RDF as part of the national air defence.
Helicopter Maritime Strike Squadron 49 (HSM-49) is a United States Navy Maritime Strike helicopter squadron based Naval Air Station North Island, California.
Patrol Squadron FIVE (VP-5) is a long-lived maritime patrol squadron of the United States Navy. It is the second squadron to bear the VP-5 designation. VP-5 is the second oldest patrol squadron, the fourth oldest in the United States Navy, and the 33rd oldest squadron in the United States military. As of 2019, VP-5 is still active and is based at Naval Air Station Jacksonville, Florida.
SM was an American made fighter-direction radar used for the ship ground-controlled interception (GCI) during World War II by the United States Navy. Variation included the SM-1.
