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A crane barge is an offshore barge that has a sheer-legs crane or fully rotating crane. A sheer-legs crane can pick loads and luff but not swing. The sheer legs consist of an A-frame made up of two heavy, tubular members or trussed columns held back by heavy stays to the bow.
A sheer-legs barge is maneuvered by deck engines, tugs, or mounted outboard engine propellers. The crane barge positions its stern at the side of the material barge, picks the load, and then moves as necessary to set the load in exact position.
Modern torque-converter deck engines and propellers with variable pitch allow a high degree of accuracy in positioning, on the order of fifty mm. One of the advantages of a sheer-legs crane barge over a fully revolving derrick barge is that the load is always picked over the stern end, hence preventing list from the swing of the crane.
The deck engines of a sheer-legs crane barge must be adequate to control the barge’s motion in yaw, sway, and surge to a very close tolerance despite the state of the sea. The sheer-legs crane barges have a capacity of around three thousand tons. A crane barge was successfully used to put jackets into pre-installed frames with a tolerance of only fifty mm.
The Global Crane barge market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
GLORY 2500DWT Deck Barge
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The vessel with a front springboard is a deck cargo vessel sailing on the Philippines coastal area mainly used for Nickel Ore transfer by dump vehicle.
The Deck Cargo vessel is to be designed as all-welded 、steel construction、 twin screw、twin rudder driven by twin diesel engine, with transom stern、raked stem、vehicle springboard, one continuous freeboard deck with forecastle deck, cargo tank with double bottom construction serving as ballast tank. Main Deck Loading is estimated at abt. 4.0T/M2
