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Frogmen
A frogman is someone who is trained in scuba diving or swimming underwater in a tactical capacity that includes military, and in some European countries, police work. Such personnel are also known by the more formal names of combat diver, combatant diver, or combat swimmer. The word ''frogman'' first arose in the stage name ''The Fearless Frogman'' of Paul Boyton in the 1870s and later was claimed by John Spence, an enlisted member of the U.S. Navy and member of the OSS Maritime Unit, to have been applied to him while he was training in a green waterproof suit. The term ''frogman'' is occasionally used to refer to a civilian scuba diver. Some sport diving clubs include the word ''Frogmen'' in their names. The preferred term by scuba users is ''diver'', but the ''frogman'' epithet persists in informal usage by non-divers, especially in the media and often referring to professional scuba divers, such as in a police diving role. In the U.S. military and intelligence commun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Underwater Demolition Team
Underwater Demolition Teams (UDT), or frogmen, were amphibious units created by the United States Navy during World War II with specialized non-tactical missions. They were predecessors of the navy's current SEAL teams. Their primary WWII function began with reconnaissance and underwater demolition of natural or man-made obstacles obstructing amphibious landings. Postwar they transitioned to scuba gear changing their capabilities. With that they came to be considered more elite and tactical during the Korean and Vietnam Wars. UDTs were pioneers in underwater demolition, closed-circuit diving, combat swimming, and midget submarine (dry and wet submersible) operations. They later were tasked with ensuring recovery of space capsules and astronauts after splash down in the Mercury, Gemini and Apollo space flight programs. Commando training was added making them the forerunner to the United States Navy SEAL program that exists today. In 1983, after additional SEAL training, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scuba Set
A scuba set, originally just scuba, is any breathing apparatus that is entirely carried by an underwater diver and provides the diver with breathing gas at the ambient pressure. ''Scuba'' is an anacronym for self-contained underwater breathing apparatus. Although strictly speaking the scuba set is only the diving equipment that is required for providing breathing gas to the diver, general usage includes the harness by which it is carried, and those accessories which are integral parts of the harness and breathing apparatus assembly, such as a jacket or wing style buoyancy compensator and instruments mounted in a combined housing with the pressure gauge, and in the looser sense, it has been used to refer to all the diving equipment used by the scuba diver, though this would more commonly and accurately be termed scuba equipment or scuba gear. Scuba is overwhelmingly the most common underwater breathing system used by recreational divers and is also used in professional divi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scuba Diving
Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface air supply. The name "scuba", an acronym for "Self-Contained Underwater Breathing Apparatus", was coined by Christian J. Lambertsen in a patent submitted in 1952. Scuba divers carry their own source of breathing gas, usually compressed air, affording them greater independence and movement than surface-supplied divers, and more time underwater than free divers. Although the use of compressed air is common, a gas blend with a higher oxygen content, known as enriched air or nitrox, has become popular due to the reduced nitrogen intake during long and/or repetitive dives. Also, breathing gas diluted with helium may be used to reduce the likelihood and effects of nitrogen narcosis during deeper dives. Open circuit scuba systems discharge the breathing gas into the environment as it is exhaled, and consist of one or more diving cylinders containing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CCUBA
A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user's exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the user. This differs from open-circuit breathing apparatus, where the exhaled gas is discharged directly into the environment. The purpose is to extend the breathing endurance of a limited gas supply, and, for covert military use by frogmen or observation of underwater life, eliminating the bubbles produced by an open circuit system and in turn not scaring wildlife being filmed. A rebreather is generally understood to be a portable unit carried by the user. The same technology on a vehicle or non-mobile installation is more likely to be referred to as a life-support system. Rebreather technology may be used where breathing gas supply is limited, such as underwater or in space, where the enviro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Spence (frogman)
John Pitts Spence (June 14, 1918 – October 29, 2013) was an American diver for the United States Navy and World War II veteran who is widely credited as the country's first combat frogman. Spence was the first enlisted man to be recruited into a clandestine group, operated by General William "Wild Bill" Donovan of the Office of Strategic Services (OSS), which would become known as the frogmen. The group was a predecessor of the present-day United States Navy SEALs. The origin of the term "frogman" can be traced directly to John Spence. In an interview with maritime historian Erick Simmel, Spence explained that frogman first came into use while he was training in a green, waterproof suit. Spence recalled, "Someone saw me surfacing one day and yelled out, 'Hey, frogman!' The name stuck for all of us." Spence and the other men trained in underwater close combat techniques, demolition and stealth in order to destroy underwater emplacements and enemy ships during World War II. Spen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frømandskorpset
The Frogman Corps ( da, Frømandskorpset) is the maritime special operations force of the Danish Defence part of Special Operations Command. On 1 July 2015, the Frogman Corps transferred from the Royal Danish Navy to the newly established Special Operations Command. History The Frogman Corps was established on 17 June 1957 based on the model of the United Kingdom's Special Boat Service, US Underwater Demolition Team, and Marinejegerkommandoen in Norway. Initially it was under the Danish Navy's Diving School at Flådestation Holmen (Naval Station Holmen, Copenhagen), but in 1972 it was made an independent unit, operationally under the submarine squadron. Role The Frogman Corps' primary role is reconnaissance, but it is also tasked with assaulting enemy ships, sabotage of fixed installations, advanced force and maritime anti-terrorism tasks. It also performs special operations work on land, including anti-terrorism and anti-criminal work. The Corps supports the police with mat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navy SEAL
The United States Navy Sea, Air, and Land (SEAL) Teams, commonly known as Navy SEALs, are the U.S. Navy's primary special operations force and a component of the Naval Special Warfare Command. Among the SEALs' main functions are conducting small-unit special operation missions in maritime, jungle, urban, arctic, mountainous, and desert environments. SEALs are typically ordered to capture or to kill high level targets, or to gather intelligence behind enemy lines. All active SEALs are members of the U.S. Navy. The CIA's highly secretive and elite Special Operations Group (SOG) recruits operators from SEAL Teams, with joint operations going back to the MACV-SOG during the Vietnam War. This cooperation still exists today, as evidenced by military operations in Iraq and Afghanistan. History Origins Although not formally founded until 1962, the modern-day U.S. Navy SEALs trace their roots to World War II. The United States Military recognized the need for the covert reconna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Professional Diving
Professional diving is underwater diving where the divers are paid for their work. The procedures are often regulated by legislation and codes of practice as it is an inherently hazardous occupation and the diver works as a member of a team. Due to the dangerous nature of some professional diving operations, specialized equipment such as an on-site hyperbaric chamber and diver-to-surface communication system is often required by law, and the mode of diving for some applications may be regulated. There are several branches of professional diving, the best known of which is probably commercial diving and its specialised applications, offshore diving, inshore civil engineering diving, marine salvage diving, hazmat diving, and ships husbandry diving. There are also applications in scientific research, marine archaeology, fishing and aquaculture, public service, law enforcement, military service and diver training. Any person wishing to become a professional diver normally re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Office Of Strategic Services
The Office of Strategic Services (OSS) was the intelligence agency of the United States during World War II. The OSS was formed as an agency of the Joint Chiefs of Staff (JCS) to coordinate espionage activities behind enemy lines for all branches of the United States Armed Forces. Other OSS functions included the use of propaganda, subversion, and post-war planning. The OSS was dissolved a month after the end of the war. Intelligence tasks were shortly later resumed and carried over by its successors the Department of State's Bureau of Intelligence and Research (INR), and the independent Central Intelligence Agency (CIA). On December 14, 2016, the organization was collectively honored with a Congressional Gold Medal. Origin Prior to the formation of the OSS, the various departments of the executive branch, including the State, Treasury, Navy, and War Departments conducted American intelligence activities on an ''ad hoc'' basis, with no overall direction, coordination, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regimental Reconnaissance Company
The 75th Ranger Regiment's Regimental Reconnaissance Company (formerly known as Regimental Reconnaissance Detachment, or RRD) is an elite special operations force that has been a member of Joint Special Operations Command since 2005. The unit is believed to have become part of JSOC due to its extensive training and unique capabilities to conduct special reconnaissance and close target reconnaissance (CTR) operations, and advanced force operations (AFO). It is often referred as a Special Mission Unit (SMU). Disposition Based out of Fort Benning, Georgia, RRC is among the premier special reconnaissance units of the U.S. military. RRD, as it was originally called, was activated in October 1984 with the formation of the 75th Ranger Regiment Headquarters at Fort Benning. The detachment was tasked with providing worldwide reconnaissance and operational preparation of the environment in support of the 75th Ranger Regiment and other units within USASOC and JSOC. Traditionally RRD w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
75th Ranger Regiment
The 75th Ranger Regiment, also known as Army Rangers, is the U.S. Army's premier light infantry unit and special operations force within the United States Army Special Operations Command. The regiment is headquartered at Fort Benning, Georgia and is composed of a regimental headquarters company, a military intelligence battalion, a special troops battalion, and three Ranger battalions. The 75th Ranger Regiment primarily handles direct action raids in hostile or sensitive environments, often killing or capturing high-value targets. Other missions include airfield seizure, special reconnaissance, personnel recovery, clandestine insertion, and site exploitation. The regiment can deploy one Ranger battalion within eighteen hours of alert notification. The 75th Ranger Regiment is one of the U.S. military's most extensively used units. On December 17, 2021, it marked 7,000 consecutive days of combat operations. History Origin American Ranger history predates the America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Navy 050505-N-3093M-001 A Member Of SEAL Delivery Vehicle Team Two (SDVT-2) Climbs Aboard One Of The Team's SEAL Delivery Vehicles (SDV) Before Launching From The Back Of The Los Angeles-class Attack Submarine USS Philadelph
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Amer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
