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a 40 hp electric-motor drive, a drum sized for over 500 ft. of 8-in. soft-line, and a level- wind fairleader to help prevent the soft-line from pulling down through lower layers.

The high-capacity automatic drum brake will hold more than 300,000 lbs. Markey also outfitted this winch-system with its Line-Tension Display System, which shows the operator the tension in the line while the drum brake is set. As has become stan- dard on all Markey Winches for this service, this winch includes Markey's Render-

Recover Mode capability that allows the Captain to operate the Winch in a hands-free manner. The new designs are based on Markey's soft-line hawser winches for assist- tugs, which allow the winch to be set up for either wire rope or high-performance ropes based on Plasma or Dyneema fibers.

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Direct Hydraulic Drives

Hydraulic systems for deck equipment such as provided by Hagglunds eliminate gearboxes, and are designed for simplicity and better performance, as well as improved tension control and response. Weight and space is saved so the winches can be positioned better to suit the function and the safety of the crew. The power pack can be positioned conveniently anywhere including below decks on smaller vessels where the weight is useful for ship stability and freeing up more space for deck operations.

Lower noise levels are also evident and brakes are DNV approved. Power levels are optimized because a common pump can supply several functions and flow is directed to needed equipment only. A second pump provides standby facilities.

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July, 2006 • MarineNews 27

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Techcrane for Vane Bunkering Barges

Techcrane recently installed two API monogrammed model F10-60 cranes for the handling of petroleum product for Vane Bunkering barges. Installed port and star- board, the cranes were customized for Vane to include a line payout system that is activated only under gross overload to prevent damage to the crane. Special brack- ets were mounted underneath the boom to handle product pipe, which prevents the product hose from chaffing. The barges were built at Trinity Marine shipyard in

Ashland City, Tenn.

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