Page 14: of Maritime Reporter Magazine (January 2003)

Cline driveshaft applications include: > Main Propulsion > Z-drives > Bow/Stern Thrusters > Auxiliary Drives > Pumps

Greenville SC theclineco.com • 800.235.6371

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Investment in Design • By [ ing gas turbines at 25-MW.

With a total module weight, including the acoustic enclosure, of as little as 22- tons, the power-to-weight ratio is impressive, to say the least. For genset drive applications in cruise ships using electric propulsion motors, the gas tur- bine permits more flexibility in the ship design process. Engines can be sited in the funnel, or aft near podded propul- sors. for example, so as to make the most effective use of the hull envelope.

Modular construction facilitates ship- yard handling in newbuild projects. It expedites major maintenance, such that modules can be removed and replaced in many instances, avoiding the cost of complete engine overhaul.

Although gas turbine plant for cruise- ships and fast, powerful ferries is an ivid Tinsley established option, Rolls-Royce has bro- ken new ground by also advocating the emergent MT30 for LNG carrier propul- sion. The proposal is timely, given the current level of industry interest in pos- sible alternatives to steam turbine plant for large LNG tankers, most recently expressed in the milestone selection of diesel-electric propulsion for a French newbuild. Rolls-Royce says that adop- tion of an MT30, rated at some 30-MW to ensure a laden speed of 20-knots, would enable engine room length in a 140.000-cu. m. capacity LNG carrier to be reduced by 19-m relative to a compa- rable steam turbine application. This could release up to 12-percent more of the given hull space for cargo, or alter- natively enable a reduction in overall ship size. As with steam turbine plant. the MT30 could utilize natural gas cargo boil-off. Maintenance contracts cover- ing servicing, overhauls and spare parts supply, a field in which Rolls-Royce continues to show its mettle in the air- line industry, are to be offered to support shipping operators and foster competi- tive through-life costs. The MT30 may be regarded as the first of a new genera- tion of marine gas turbines. For instance, the development would serve as the basis for a 50-MW unit, another aero Trent derivative, proposed for the long-mooted transatlantic FastShip freight carrier project. The timing and extent of follow-on models to the MT30 will no doubt be heavily influenced by market reception to the potent new design encapsulated in the machine now running tin the testbed at Bristol.

Damen Vessels Feature

MAN B&W Power

Two MAN B&W main engines type 6L28/32A have been ordered by Damen

Shipyards Gorinchem, Holland, for installation into a tug for the Republic of Sudan.

The newbuilding is based on one of

Damen's standard designs (Damen Stan

Tug 4511) and is intended to for tug and escort operations in the Red Sea. The propulsion package consists of two engines driving FP propellers via rev/red gearboxes. Each engine has a 280 mm bore, a 320 mm stroke and is rated 1,425 kW at 775 rpm.

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Well Traveled.

The Cline Company has supplied universal joint driveshafts and floating shaft coupling assemblies for

Marine Propulsion for more than 20 years.

Circle 258 on Reader Service Card or visit www.maritimereporterinfo.com 16 Maritime Reporter & Engineering News

Marine Systems

LiquiSeal Purge Control

LiquiSeal Purge Control is a fully integrated level sensor for liquid cargo/service tanks or for draft measurement External mounting on the tank or at remote location. Rugged brass construction with pneumatic or two wire (4-20 mA) output.

Compressed air required for operation.

LevelBAR

Replaces Fluid-Filled Gauges

LevelBAR offers direct replacement for fluid-filled manometer tank gauges. Built for greater reliability, analog LED column graphically displays tank level. Rugged stainless enclosure and shatterproof window. Models for electronic or air driven systems.

Call Fax 734-662-6652 KING-GAGE

KING ENGINEERING CORPORATION

Since 1937 3201 S. Stole • P.O. Box 1228 • Ann Arbor, Ml 48106 • 734-662-5691

LevelBAR

Ballast and Tank Level

Indicating Systems for the Marine and Offshore

Oil/Gas Industries

LevelPRO Multiple Tank Level Processors

LevelPRO provides continuous measurement of ballast levels and shipboard service tanks. Up to 8 tank levels with local display and operator terminal.

Digital multidrop network compatible with auto- mated control systems Durable corrosion-proof housing and sealed keypad.