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The United States Coast Guard operated four 52-foot Motor Lifeboats (MLBs), also known as "special purpose craft — heavy weather" (SPC-HWX), from 1956 until 2021. The 52' MLBs supplemented its fleet of 227 47-foot Motor Lifeboats. [1] These motor lifeboats were built in the late 1950s and early 1960s, and each displaces 32 tons. [2]
Weeks 533 is a 500-short-ton (454 t) capacity Clyde Iron Works model 52 barge-mounted crane which is the largest revolving floating crane on the East Coast of the United States. [1] It was originally ordered for bridge construction and has since been used in several notable heavy lifts.
The 52-foot Motor Lifeboat was a wooden-hulled motor lifeboat (MLB) class operated by the United States Coast Guard between 1935 and 1967 which included two ships: Invincible (CG 52300) and Triumph (CG 52301). [1] [2] [3]
The design came about from a requirement that British motor torpedo boats should be better able to fight other small craft, which was the job of motor gun boats (MGB). To this end Vospers built on their existing 70 foot designs, and the design was trialled with MTB 379. [3] Sixteen (MTB 380-345) were ordered in 1943.
When in 1896 the modern international Olympic Games began, weight lifting was an event at the first Games; and since 1920 weightlifting has been a regular part of the Olympics. [ 5 ] [ 7 ] By 1932 the Olympic competition comprised three lifts, all of which are different ways of lifting a weighted barbell from ground to overhead: namely the ...
Its low weight, shallow draught, and twin water jets allow it to operate at speeds of up to 40 knots (74 km/h) in shallow coastal waters. The water jets are partially ducted, which, along with underwater control surfaces similar to a submarine's diving planes , gives the CB90 its manoeuvrability.
At the bow of the boat are storage bags for equipment (foot pumps, extra lines, etc.) and a special fuel bladder, which can be of either 6- or 18-gallon capacity and which feeds the engine via a flexible hose. Deflated and rolled up, the boat and all necessary equipment can easily fit into the bed of a small pickup.
Jetsprint or sprint boat racing [1] is a form of motorboat racing in which jetboats, with a crew of two, race individually against the clock through a twisting series of channels in less than a metre of water.
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