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W 11 1 " . „ s es t BH . .. JBk M- A m fill* SHIP & BOATBUILDING TECHNOLOGY Caterpillar Launches New CM Series Of Engines Marking the first release of a new engine product since its acquisition of Germany's MaK, Caterpillar has launched its all new CM Series of engines, with the introduction of the CM32 and the CM43. The engines are designed for use in a broad range of petroleum applications, including semi-submersible drill rigs, power barges, drillships, FPSOs and other equipment used for mobile offshore drilling and oil extraction. Available in both in-line (6, 8, and 9-cyl.) and V (12 and 16-cyl.) configura- tions, the CM32 is a long-stroke medium speed engine rated at 2,880 to 7,680 kW. The engines CM32 In-Line Engine Data Number of Cylinders .. Bore 6,8,9 320mm Stroke 480mm Cylinder rating Speed 480kW ... .600 rpm Mean piston speed ... ... .9.6 m/s BMEP ....24.9 bar Pmax 190 bar Engine rating 6-cyl .. .2,880 kW 8-cyl .. .3,840 kW 9-cyl 4,320 kW A vibration-free vessel begins with a precision-straightened AQUAMETT boat shaft from Western Branch Metals. We can straighten shafts up to 8" in diameter and up to 35 feet in length to exacting tolerances. Over the past 22 years, Western Branch Metals has grown to become the largest stocking distributor of AQUAMET boat shafting in the world. We are committed to providing quality, availability and competitive pricing with an added touch of personal service. Talk to the company who knows boat shafting, Western Branch! To learn more, call: 800.446.8133 www. aquamet. com AQUAMET BOAT SHARING / \lways give It to you straight! 352 Lee Avenue • Portsmouth, Virginia 23707 Tel: (757) 399-3015 • Fax: (757) 399-8942 Circle 284 on Reader Service Card Lightweight Marine Reduction Gears For Today's Fast Ferries and High Performance Craft Gas turbine and diesel powered marine reduction gears developed specifically for high speed marine applications Features: • Lightweight designs '""•A-* • Compact aluminum housings ^^^^^^^^^^ • Surface hardened and ground gearing • Epicyclic designs ^^B , . • Single or dual input parallel shaft designs - • Diesel, turbine or combined (CODAG or M J^ C0D06) configurations ^Hl •HWHH • 3,000 to 10,000 kW/input diesel designs • 3,000 to 25,000 kW / input turbine designs ^^L ' a Integrated lube system ^^H HHBB^^L 24 Hour Industry-wide Service and Repair 1500 Members of THE CINCINNATI GEAR COMPANY 5657 WOOSTER PIKE CINCINNATI, OH 45227 USA (513)271-7700 FAX(513)271-0049 BHS - CINCINNATI GETRIEBETECHNIK GMBH HANS-BOCKLER - STR. 7, D-87527 POSTFACH 1251, D-87516 SONTHOFEN, GERMANY 8321/802-0 • FAX 8321/802689 The Caterpillar CM43 engine was designed for drillship applications. Circle 129 on Reader Service Card are capable of running cleanly on distillate or low-quality residual fuel or crude oil. The CM32 is manu- factured according to ISO 9001 stan- dards, and are designed for high reli- ability, low installation costs, envi- ronmental soundness, low oil con- sumption and top fuel economy. The in-line version of the CM32 is rated to deliver form 2,880 to 4,320 kW at 600 rpm. It features a stroke/bore ratio of 1.5. Intervals between over- hauls, according to Steve Birdsall, typically range from two years (16,000 hours) to five years (40,000 hours). V versions of the CM32 engine delivers 5,530 to 7,680 kW at 720 rpm, with a stroke/bore ratio of 1.31. Mr. Birdsall said that the engine possesses excellent thermo- dynamic characteristics. The CM43 was released for drillship applica- tions worldwide. Available in in-line (6, 7, 8, and 9-cyl.) and V (12, 14, 16 and 18-cyl.) configurations, the CM43 is an all-new long-stroke medium speed engine with a 430mm bore. The CM43 will be manufac- tured in Kiel, and production is slat- ed to begin in 1999. The in-line ver- sion of the CM43 are rated to deliver power in a range form 5,400 to 8,100 kW at 500 rpm. V version are designed to deliver 10,800 to 16,200 kW at 500 rpm. The engines have a stroke/bore ratio of 1.48 and are designed to possess excellent thermo- dynamic characteristics required for crude and residual low-grade fuels. Circle 38 on Reader Service Card GL Sponsors Double Hull Crash Test The value of double hull construc- tion, mandated following two high- profile shipping accidents, was under study recently by the German ship classification society Germanischer Lloyd (GL). A collision test was orchestrated between two inland waterway tankers, vessels which were originally intended for scrap- ping but were instead spared and prepared for these unique trials. The test section was modeled on a 40,000 dwt tanker, scaled down to 1:3. The ramming bow, also reduced to the 1:3 scale, corresponds to the bulbous bow of a 40,000 ton vessel. It was set to hit the test model at a 98 Maritime Reporter/Engineering News