A new hydraulic marine crane, the Unit Mariner Model 480-H, is announced by the Unit Crane & Shovel Corporation. Having an API rated capacity of 42,400 pounds, the maximum lift capacity at a 15-foot radius is 67,000 pounds.
The 45-foot standard tubular steel boom can be extended with optional inserts to lengths through 100 feet. The main load hoist, auxiliary, and optional high-speed hoist are available with 1/2-inch or 3/4-inch wire rope, including nonrotating and spin-resistant. And open loop hydraulic system is said to be simple to maintain, run cool, and powered by a diesel or electric prime mover. Hydraulic controls in the enclosed operator's cab provide fast response for all functions, including 360-degree rotation.
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