Marine Log - February 2009 - (Page 8) Update INLAND • COASTAL • OFFSHORE • DEEPSEA Penn Maritime takes delivery of ATB tug P enn Maritime, Staten Island, N.Y., recently took delivery of the M/V Coho, the second in a series of five 116 ft x36 ft x 17 ft coastal tugs from ThomaSea Boatbuilders, Houma, La. The Coho, designed by naval architectural firm Entech & Associates, Inc., Houma, The Coho will use a JAK 400 system to couple with a 90,000 bbl tank barge built by Corn Island Shipyard will be matched with a 90,000 bbl, 414 ft x 74 ft coastal tank barge being built by Corn Island Shipyard, Lamar, Ind., in an Articulated Tug Barge (ATB) unit. Corn Island has delivered one other 90,000 bbl asphalt/No. 6 oil tank barge for Penn and has two others on order. The coupling, supplied by Beacon Finland, is a JAK-400 model pin and socket system with eight sockets in each wing of the barge notch to accommodate varying drafts of the barge. The pneumatically operated pins are 16 inches in diameter. The compact, lightweight JAK-400 coupling system is typically used on tugs with a displacement of between 350 and 1,000 tons and barges with displacements of 1,000 to 30,000 tons. Propulsion for the Coho is supplied by two V-16 Cummins QSK60 engines, each rated at 2,000 hp at 1,800 rev/min, with Reintjes marine gears with 7.45:1 ratios, and 104 inch x 112 inch skewed propellers with Nautican nozzles and shutter rudders. The 223-gross ton tug’s elevated wheelhouse has an eye The Coho’s 104 in by 112 in propellers being installed in Nautican nozzles level of 51.5 feet above the water. The load line draft is 14 ft 4 inches and air draft 78 ft. 8 MARINE LOG FEBRUARY 2009 www.marinelog.com http://www.marinelog.com
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