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Halter Delivers Second SDM Halter Marine Group has deliv- ered St. Johns, the second in a series of three revolutionary Ship Docking Modules (SDM) to Hvide Marine, Inc. Now in service at Tampa Bay, Fla., the vessel follows the first Halter-built SDM, New River. The patented 90 x 50 ft. (27 x 15 m) SDM design, which requires only two crew members to operate, was conceived by Erik Hvide, chairman and president of Hvide Marine, Inc., and refined by the Elliott Bay Design Group. The double-ended, 4,000 hp har- bor tug has skegs mounted on each end, featuring Z-drives mounted forward and aft and offset 6.5 ft. MetalCraft Marine Delivers Vessels To U.S. Park Service from the center to provide 100 per- cent of its bollard pull in any direc- tion. It can move sideways with a maximum draft of 16.2 ft. (5 m), or just 5.2 ft. (1.6 m) on the hull and 11 ft. (3.4 m) on the skegs. Two Caterpillar 3516BTA diesel engines, developing a total of 4,000 hp at 1,600 rpm power St. Johns. They turn the Z-drives with 86 in. diameter propellers in nozzles. Maximum speed is 11.5 knots, with a service speed of nine knots. The ship's service power is pro- vided by two 75 kW Detroit Diesel 4-71 generator sets. A Markey DYSF-39 hawser winch is located on the deck and a 3,000 gpm remote-controlled fire monitor is mounted atop the pilot house. Protecting the saucer-shaped SDM is a 45,000 lbs. Schuyler model SR3D fender system. Circle 14 on Reader Service Card The U.S. National Park Service has taken delivery of two welded aluminum Bullnose-model high- speed landing craft barges from MetalCraft Marine Inc. of Kingston, Ontario, Canada. The 24-ft. (7 m) and 27-ft. (8 m) vessels, both 9.5 ft. (3 m) wide, were manufactured by MetalCraft Marine Group member Stanley Custom of Parry Sound Ontario. Propulsion installation and interi- or finishing were done at MetalCraft's Small Craft Division in Kingston. The barges will be used for general transportation and maintenance on Lake Powell, the reservoir on the Colorado River upstream from Glen Canyon Dam. Both barges are powered by MerCruiser 350 Magnum EFI engines with Multi-Point Injection putting out 350 hp through Alpha drive legs. The 24-ft. (7 m) Bullnose achieved a top speed of 44 mph light. Circle 38 on Reader Service Card CARHARTT EXTREMES. XWw ' WW IT'S WHAT A PROFESSIONAL WORKER WEARS ... IN COLD, WET ENVIRONMENTS. Extreme work conditions in cold and wet environments are the norm for some professionals. Water repellencyi, warmth, comfort and freedom of movement become essential requirements for their workwear. That's why Carhartt Extremes were created. With its water repellent 1000 denier DuPont Cor dura1 Plus nylon shell and Carhartt arctic-weight lining, Carhartt » Extremes delivers superior durability and protection from the elements. It sets a new standard in rough weather workwear ... whigh is exactly what professionals expect ... from Carhartt. For your nearest Carhartt retailer, call 1-800-833-311^ CORDURA PIUS I*, (USA) ») i * www C«rVjn: Carhartt© nvnnp* /rrr1 EXTREMES Circle 229 on Reader Service Card 67