Page 96: of Maritime Reporter Magazine (June 1998)

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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

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Circle 284 on Reader Service Card

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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