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and communications equipment is installed, including radars, echo sounder, Decca Navigator, Loran C, satellite navigator, and weather fac- simile. The underwater hull is coated with self-polishing antifoul- ing supplied by International Paint (Korea). AMERICAN OHIO Major Suppliers Main engine Hyundai/Sulzer Engine controls Sulze Propeller SMM Shaft Hyundai/Kobe Steering gear Mitsubishi Bow thruster Nagasima Windlass & mooring winches Norwinch-SHI Boiler plant Aalborg Generators Taiyo Generator engines Daihatsu FW generator, plate coolers, purifiers Nagase-Alfa Main switchboard, distribution boards, motor starters Terasaki Air conditioning plant .... Hi-Press Valve remote controls Pleiger Lifeboats MASECO Coatings . . International Paint Korea Accommodation panel . Blohm + Voss Radars Kelvin Hughes Radio plant ITT Autopilot & gyrocompass . . Hokushin Satnav system Magnavox ASAKASAN MARU Mitsui The 197,060-dwt ore carrier Asa- kasan Maru, built at the Chiba Works of Mitsui Engineering & Shipbuilding Company (MES), was delivered early this year to joint owners Mitsui O.S.K. Lines and Sa- wayama Kisen Kaisha. The big bulker has an overall length of about 984 feet, beam of 164 feet, depth of 79 feet, and full-load draft of 58.5 feet. She is powered by a slow-speed Mitsui/B&W 7L80MCE diesel engine with a maximum con- tinuous rating of 20,700 bhp at 80.8 rpm. On sea trials the ship attained a speed of 16.35 knots. A special feature of the new ore carrier is the superstructure located aft, which is shaped like a compact, streamlined tower. Such tower- shaped superstructures have been used by MES in the past for only four ships—three tankers built in 1965 for Fred Olsen of Norway and another in 1968 for Anders Wil- helmsen & Company, also of Nor- way. Reflecting the current trend for increasing the energy efficiency in ships, use of this unusual super- structure to reduce air resistance is now attracting renewed interest. A Mitsui ATG-V turbogenerator system (mixed-pressure turbine sys- tem) is installed for maximum utili- zation of the waste heat of the main engine exhaust. The ship is also equipped with a thyrister convertor- invertor type shaft generator that can be used as an emergency propul- sion motor, and a power manage- ment system for most effective utili- zation of the turbogenerator's out- put. Other energy-saving features in- Circle 337 on Reader Service Card elude a Mitsui Integrated Duct Pro- peller, a reaction rudder, and exten- sive use of high-tensile steel in the hull structure to reduce weight. The exterior hull bottom and waterline areas are coated with self-polishing antifouling paint. Windlasses, mooring winches, and deck washing equipment are fitted with remote control systems with a view to reducing the crew's work- load. The engine control room and cargo control room are integrated for more performance of the duties of both. The main engine room is designed for unmanned operation, and has obtained NK's "MO-A" no- tation. EASTERN SUN Jeffboat Jeffboat, Incorporated, of Jeffer- sonville, Ind., at mid-year delivered the motor tanker Eastern Sun to Sun Refining & Marketing Compa- ny of Aston, Pa. The 2,500-dwt product carrier was designed to carry clean petro- leum and lube oil products for the U.S. Eastern Seaboard. This new generation of coastal tankers not only enables the operator to service restricted terminals and limited- draft accesses, but concurrently op- (continued)
