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Operation Nimbus Star involved the clearance of naval mines and unexploded ordnance from portions of the Suez Canal and its approaches [1] The U.S. Navy amphibious assault ship USS Iwo Jima (LPH-2) (later relieved by USS Inchon (LPH-12)) deployed more than a month early with only five days notice, and became the flagship of "Task Force 65" to clear mines from the Suez Canal.
Parbuckling a cask up an incline. While the mechanical advantage used by a laborer to parbuckle a cask up an incline is 2:1, parbuckling salvage is not so limited. Each of the 21 winches used to roll the Oklahoma used cables that passed through two 17-part tackle assemblies (17:1 advantage).
Harbor Clearance Unit One, a United States Navy unit, was commissioned in February 1966 with the mission "....to provide salvage repair; diving and rescue services in rivers and restricted waters and to conduct harbor and river clearance operations in the Western Pacific."
EOD employs a variety of tools, techniques, and procedures (TTPs) to accomplish the mission. Robots are used to perform remote procedures on unexploded ordnance and improvised explosive devices. Efforts to maintain the latest technology are accomplished with the assistance and the DoE and various civilian organizations.
The Mark 12 5"/38-caliber gun was a United States dual-purpose naval gun, but also installed in single-purpose mounts on a handful of ships.The 38-caliber barrel was a mid-length compromise between the previous United States standard 5"/51 low-angle gun and 5"/25 anti-aircraft gun.
A US Navy work diver is lowered to the sea bed during a dive from the USNS Grasp off the coast of St. Kitts. Preparing to raise a mine from the seabed. A clearance diver was originally a specialist naval diver who used explosives underwater to remove obstructions to make harbours and shipping channels safe to navigate, but the term "clearance diver" was later used to include other naval ...
United States naval gun terminology indicates the gun fired a projectile 6 inches (15 cm) in diameter, and the barrel was 53 calibers long (barrel length is 6 inch x 53 = 318 inches or 8 meters.) [2] The gun with side swing Welin breech block and Smith-Asbury mechanism weighed about 10 tonnes and used a silk bag containing 44-pounds (20 kg) of smokeless powder to give a 105-pound (47.6 kg ...
All guns employed a Welin breech block and used a Smith-Asbury mechanism, and, in the case of the Mark 12, chromium plating was introduced to prolong barrel life. These improvements enabled the guns to fire heavier 1,500 lb (680 kg) shells, and increasing the gun mount elevation to 30 degrees [ 2 ] extended the range of the guns to 36,000 yd ...