The United States Naval Special Warfare Command (NAVSPECWARCOM, NAVSOC or NSWC) was commissioned on 16 April 1987, at Naval Amphibious Base Coronado in San Diego, California. As the Naval component to the United States Special Operations Command, headquartered at MacDill AFB in Tampa, Florida, Naval Special Warfare Command provides vision, leadership, doctrinal guidance, resources and oversight to ensure component maritime special operations forces are ready to meet the operational requirements of combatant commanders. The NSW has 5,400 total active-duty personnel, including 2,450 SEALs and 600 Special Warfare Combatant-craft Crewmen. NSW also maintains a 1,200-person reserve of approximately 325 SEALs, 125 SWCC and 775 support personnel.

Underwater Demolition Teams

On 23 November 1943, the U.S. Marine landing on Tarawa Atoll emphasized the need for hydrographic reconnaissance and underwater demolition of obstacles prior to any amphibious landing. After Tarawa, 30 officers and 150 enlisted men were moved to the Waimānalo Amphibious Training Base to form the nucleus of a demolition training program. This group became Underwater Demolition Teams (UDT) ONE and TWO.

The UDTs saw their first combat on 31 January 1944, during Operation Flintlock in the Marshall Islands. FLINTLOCK became the real catalyst for the UDT training program in the Pacific Theater. In February 1944, the Naval Combat Demolition Training and Experimental Base was established at Kīhei, Maui, next to the Amphibious Base at Kamaole. Eventually, 34 UDT teams were established. Wearing swim suits, fins, and dive masks on combat operations, these "Naked Warriors" saw action across the Pacific in every major amphibious landing including: Eniwetok, Saipan, Guam, Tinian, Angaur, Ulithi, Peleliu, Leyte, Lingayen Gulf, Zambales, Iwo Jima, Okinawa, Labuan, Brunei Bay, and on 4 July 1945 at Balikpapan on Borneo, which was the last UDT demolition operation of the war.

The rapid demobilization at the conclusion of the war reduced the number of active duty UDTs to two on each coast with a complement of seven officers and 45 enlisted men each.

The Korean War began on 25 June 1950, when the North Korean army invaded South Korea. Beginning with a detachment of 11 personnel from UDT 3, UDT participation expanded to three teams with a combined strength of 300 men. As part of the Special Operations Group, or SOG, UDTs successfully conducted demolition raids on railroad tunnels and bridges along the Korean coast. On 15 September 1950, UDTs supported Operation Chromite, the amphibious landing at Incheon. UDT 1 and 3 provided personnel who went in ahead of the landing craft, scouting mud flats, marking low points in the channel, clearing fouled propellers, and searching for mines. Four UDT personnel acted as wave-guides for the Marine landing.

In October 1950, UDTs supported mine-clearing operations in Wonsan Harbor where frogmen would locate and mark mines for minesweepers. On 12 October 1950, two U.S. minesweepers hit mines and sank. UDTs rescued 25 sailors. The next day, William Giannotti conducted the first U.S. combat operation using an "aqualung" when he dove on the USS Pledge (AM-277). For the remainder of the war, UDTs conducted beach and river reconnaissance, infiltrated guerrillas behind the lines from sea, continued mine sweeping operations, and participated in Operation Fishnet, which severely damaged the North Korean's fishing capability.

Navy SEALs & SWCC

Although Naval Special Warfare personnel comprise less than one percent of U.S. Navy personnel, they offer big dividends on a small investment. SEAL and SWCC units' proven ability to operate across the spectrum of conflict and in operations other than war in a controlled manner, and their ability to provide real time intelligence and eyes on target, offer decision makers immediate and virtually unlimited options in the face of rapidly changing crises around the world.

SEALs

SEALs are Special Operations Command’s force-of-choice to conduct small-unit maritime military operations which originate from, and return to a river, ocean, swamp, delta or coastline. This littoral capability is considered more important now than ever, as half the world’s infrastructure and population is located within one mile (1.6 km) of an ocean or river.

Responding to President John F. Kennedy's desire for the Services to develop an Unconventional Warfare (UW) capability, the US Navy established SEAL Team ONE and SEAL Team TWO in January 1962. Formed entirely with personnel from Underwater Demolition Teams, the SEALs' mission was to conduct counter guerrilla warfare and clandestine operations in maritime and riverine environments.

Navy SEALs have distinguished themselves as an individually reliable, collectively disciplined and highly skilled maritime force. Because of the dangers inherent in NSW, prospective SEALs go through what is considered by many military experts to be the toughest training in the world. The intense physical and mental conditioning it takes to become a SEAL begins at Basic Underwater Demolition/SEAL (BUD/S) training.

SEAL candidates begin BUD/S training at the Naval Special Warfare Center, NAB Coronado, California. This six-month course of instruction focuses on physical conditioning, small boat handling, diving physics, basic diving techniques, land warfare, weapons, demolitions, communications, and reconnaissance.

First Phase trains, develops, and assesses SEAL candidates in physical conditioning, water competency, teamwork, and mental tenacity. Second (Diving) Phase trains, develops, and qualifies SEAL candidates as competent basic combat swimmers. During this period, physical training continues and becomes even more intensive. Emphasis is placed on long distance underwater dives with the goal of training students to become basic combat divers, using swimming and diving techniques as a means of transportation from their launch point to their combat objective. This is a skill that separates SEALs from all other Special Operations forces. Third Phase trains, develops, and qualifies SEAL candidates in basic weapons, demolition, and small unit tactics. Third Phase concentrates on teaching land navigation, small-unit tactics, patrolling techniques, abseiling, marksmanship, and military explosives. The final three and a half weeks of Third Phase are spent at NALF San Clemente Island, where students apply all the techniques they have acquired during training.

SEAL Delivery Vehicle Teams

SEAL Delivery Vehicle Teams' historical roots began during WWII with the earliest human torpedos to see use: Maiale, used by Italy's Decima Flottiglia MAS, and Chariots, used by British commando frogmen. Naval Special Warfare entered the wet submersible field in the 1960s when the Coastal Systems Center in Panama City, FL developed the Mark 7, a free-flooding SDV of the type used today, and the first SDV to be used in the fleet. The Mark 8 and 9 followed in the late 1970s.

Today's Mark 8 Mod 1 provides NSW with an unprecedented capability that combines the attributes of clandestine underwater mobility and the combat swimmer. The Advanced SEAL Delivery System (ASDS) program that would have provided NSW a new (dry) submersible for long range infiltration missions was abandoned in 2009.

Special Warfare Combatant-craft Crewmen

The exclusive mission of Special Warfare Combatant-craft Crewmen operators is to expertly drive and provide small-caliber gunfire support on specialized high-tech, high-speed, and low-profile Surface Combatant Craft to secretly infiltrate and exfiltrate Navy SEALs on Special Operations missions worldwide. These missions include direct action on land, sea, coastline or rivers (such as strikes, captures, and ship take downs by Visit, Board, Search, and Seizure), special reconnaissance, Coastal Patrol and Interdiction of suspect ships and surface craft, counter-terrorism operations, riverine warfare, deception operations, search and rescue operations, and foreign internal defense missions. Although SEALs and SWCC undergo different training programs, both are focused on special operations in maritime environments. The SWCC program includes extensive training on craft and weapons tactics, techniques, and procedures. Like SEALs, SWCC must show physical fitness, possess strong motivation, be combat focused, and maintain responsiveness in high stress situations.

The SWCC designation is a relatively new Naval Special Warfare career path that is independent of the regular line Navy. Today’s Special Boat Teams have their origins in the PT boats of WWII and the “Brown Water” naval force that was created in 1965 at the onset of the Vietnam War. Patrol Coastal and Patrol Torpedo ships are the ancestors of today's Cyclone class patrol ships and Mark V Special Operations Craft.

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