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PROPULSION UPDATE MAN B&W Results Are In On Sea-Land Genset Retrofits Operational feedback and 20,000- hour inspection reportedly re-con- firm benefits of MAN B&W Holeby L28/32H genset engines retrofitted in Sea-Land Service containerships. The re-engineering project was completed in mid-1991 and resulted in the rejuvenation of the auxiliary power generating plant of Sea-Land Service Inc.'s 12 Atlantic class containerships. The contract signed by the major U.S. operator and MAN B&W Die- sel AS, Holeby, Denmark, was im- portant not just because of its scale — it called for the swift supply of 36 six-cylinder L28/32H engines—but for the requirement to execute the retrofits at sea without disrupting the fleet's normal demanding liner schedules The 4,i40-TEU ships, built as the Econoship series by Daewoo in 1984-85 for U.S. Lines, were ac- quired in the late 1980s by Sea- Land Service. The owner's desire to improve operational and maintenance costs for the series influenced the deci- sion to replace the three original auxiliary power shipsets with a unifuel package burning the same IF 380 cSt heavy fuel bunkers as the low-speed main engine over the en- tire engine range: from no load to full-load, including start/stop and standby modes. The replacement 6L28/32H en- gines, each 1,075 kW at 720 rpm, were supplied on a baseframe for coupling to the existing Fuji alterna- tor. MAN B&W Holeby also acted as project manager for the re-engineer- ing program. The investment cost of the project was to be underwritten by the better fuel economy of the new engines, their 25,000-hour intervals between major overhauls and extended com- ponents durability, compared with the original shipsets. Strengthening Of The MC Engine Program In other MAN B&W news, a longer-stroke and lower-speed ver- sion of the 420 mm bore MAN B&W Diesel's MC two-stroke engine has been launched to offer even higher propulsion plant efficiency for small to medium-sized ships. The new S42 MC series is now designed to provide a simple and reliable direct coupled engine solu- tion for projects requiring outputs of 3,800 -16,700 bhp with propeller speeds between 115 and 136 rpm. The 1,764 mm stroke of the S42MC yields a bore/stroke ratio of 4.2:1 and a nominal speed of 136 rpm. The layout flexibility enables op- erators to select maximum continu- ous service speeds between 115 and 136 rpm for optimum propeller effi- ciency. An output ofl,025kW( 1,395 bhp) per cylinder is delivered at 136 rpm. The S42MC series embraces 4-12 cylinder models covering an output band from 1,800 -12,300 kW (3,800 - 16,700 bhp). A specific fuel con- sumption of 174 g/kWh (128 g/bhph) contributes to the low overall run- ning costs associated with a direct- coupled two-stroke engine plant. For more information on MAN B&W Circle 132 on Reader Service Card $13.5M Tug Building Contract Coming Soon: C.H. Cates & Sons Ltd. of North Vancouver will add two new 5,600-hp Z-Peller ship berthing tugs, scheduled to be in service in early 1995. Naval architects Robert Allan Ltd. of Vancouver are designing the vessels, and the shipbuilding con- tract valued at $13.5 million is ex- pected to be awarded shortly. For more information Circle 10 on Reader Service Card Austal Wins Approx. $ 15 Million In Ferry Contracts: Austal Ships sold a 141-ft. (43-m) high-speed passenger vessel to Japanese operator Diamond Ferry for approximately $7.7 million. Main propulsion is quadruple MTU diesel engines driving KaMeWa waterjets through ZF gearboxes. Austal Ships also won a $7.2 million contract for a 131-ft. (40-m), Textron Lycoming gas turbine-powered passenger cata- maran from the Zhong Shan - Hong Kong Passenger Shipping Co. Ltd. For more information on Austal Ships Circle 140 on Reader Service Card Kvaerner To Supply Ships Building At Holland Yard: Kvaerner Ships Equip- ment has secured the complete turn- key contracts for three large ferries building in Holland for Irish and Chinese orders. The newbuildings will be constructed in Van der Giessen de Noord, The Netherlands. For more information on Kvaerner Ships Equipment Circle 139 on Reader Service Card THE DEPARTMENT OF DEFENSE OFFERS FOR SALE HOVERCRAFT y-jWwu »i«liimTH« »minrw iuti^—7 BID OPENING: AUGUST 24, 1994 SALE NUMBER: 31-4423 INSPECTION BEGINS: AUGUST 3, 1994 UP TO 26 EACH - 30 TON LACV-30 FOR CATALOG AND MORE INFORMATION CONTACT: DEFENSE REUTILIZATION AND MARKETING SERVICE 2163 AIRWAYS BLVD., MEMPHIS, TN 38114-5211 LINDA COX (901) 775-4973 OR FAX: (901) 775-6915 74 Circle 268 on Reader Service Card Maritime Reporter/Engineering News