Page 86: of Maritime Reporter Magazine (October 1992)

Propulsion Update

Three LM1600 gas turbines power the Italian high-speed vessel, Destriero, which has a speed capability of more than 60 knots.

GE's "LM" Family Of Gas Turbines

Fits Variety of Applications

The "LM" family of aeroderivative gas turbines from GE Marine &

Industrial Engines (M&I) was launched in 1974 with the introduc- tion of the LM2500. That unit is

M&I's most experienced gas tur- bine with more than 1,000 engines currently in marine and industrial service. The gas turbines rating has been increased to 32,600 hp with a simple-cycle thermal efficiency in excess of 37 percent. To date, the

LM2500 has logged nearly 11 mil- lion operating hours.

In addition to its wide acceptance by the U.S. Navy, the LM2500 has been selected by 23 other navies worldwide. Today, 140 LM2500- powered ships are in service in the

U.S. Navy. The gas turbine is found on the Spruance class and Kidd class destroyers, the Perry class frigate,

Pegasus class hydrofoil, Ticonderoga class cruiser, the Arleigh Burke class destroyer and the AOE-6 Super class support ships.

Internationally, four LM2500 propulsion sets for the new Japa- nese 673-DDG Aegis destroyer were successfully shore tested recently, and LM2500s were selected for that country's new DDX destroyer pro- gram. In general, international navies have used the LM2500 in a broader range of ship classes and sizes than the U.S. Navy. The en- gine is often used in a CODOG con- figuration, particularly when opera- tional requirements dictate a high mobility level. The engines provide sprint capabilities to react to emer- gencies and conflicts, as evidenced by their use on the German Navy's

Class F123 for which engines were ordered, and the MEKO's for the

Portuguese, Australian, Helenic and

New Zealand navies. Additionally,

Korea chose the LM2500 for its KCX corvette program, and the Royal

Thai Navy is using the engine for its two newest frigates.

However, the LM2500 has not been limited to high-speed, light- weight naval operations. It cur- rently powers some of the largest naval ships, including the Italian

Navy's Garibaldi aircraft carrier, the Spanish Navy's aircraft carrier

Principle de Asturias, and the U.S.

Navy's 50,000-ton AOE-6 supply ships.

The LM2500s use is also growing in the commercial shipping arena.

For example, the gas turbine was selected for two Italian fast ferry programs, the SEC 750 SES from the Societa Esercizo Cantieri (SEC)

Shipyard in Viareggio and the

Aquastrada TMV 90 Monohull from

Rodriguez Cantieri Navali Shipyard, two car/passenger ferries which have 37,000 and 54,000 brake horsepower requirements respectively.

Smaller Aeroderivatives

Aside from the LM2500, M&I fills the growing demand for mobility with other "LM" gas turbines. Avail- able in different sizes, the engines are suited for naval applications or to meet the needs of growing mar- kets such as commercial fast ferries, fast cargo ships or high-speed megayachts.

M&I's smallest engine, the

LM500, offers its weight as a key benefit. At 2,400 pounds, the en- gine enhances the speed capability of a vessel with an output compa- rable to a 24,000-pound diesel en- gine. This high-performance gas turbine, which has a 32 percent thermal efficiency, has been chosen to power the Foilcat class of high- speed passenger ferries by Kvaerner

Fjellstrand currently being tested in Norway. It also is used by Den- mark to power its Stanflex 300 Class patrol boats, and by Japan for its

OIPG PG Hydrofoil.

The LM1600 provides up to 20,000 hp at 37 percent thermal efficiency.

Used in industrial applications since 1988 and marine applications since 1991, three LM1600s were used to power the Italian high-speed vessel,

Destriero, which has speed capabil- ity of more than 60 knots. Destriero recently won the Blue Riband for the fastest crossing of the Atlantic, a feat accomplished in 58 hours, 34 minutes and 50 seconds at an aver- age speed of 53.09 knots, without refueling.

The LM5000 offers more than 38 percent simple cycle thermal effi- ciency, and provides up to 55,000 hp. It incorporates many of the same materials and design features of the LM2500.

Finally, M&I's newest gas tur- bine, the LM6000, is still under pro- duction. It will produce more than 57,000 shaft hp with a thermal effi- ciency of more than 40 percent. The engine will be able to drive its load from either the hot or cold end.

For more information on GE

Marine & Industrial Engines com- plete product line,

Circle 91 on Reader Service Card

Jered Wins $27 Million

ELCAS Contract

Jered Brown Brothers was awarded a contract to design, fabri- cate and test the Elevated Cause- way System (ELCAS) for the Navy

Facilities Engineering Command.

The value of the contract is approxi- mately $27 million.

ELCAS is a part of the U.S. Navy's

Strategic Sealift Program, and it enables deep-draft supply vessels to unload cargo onto an unimproved beach, and to carry loads up to the weight of a 60-ton main battle tank.

Jered will perform the contract at its new Brunswick, Ga. facility, and will increase its employment up to 150 additional people during the two to three year contract perfor- mance period. Jered is part of the

Marine Engineering Division of

Vickers P.L.C., an international company based in the U.K.

For additional information on

Jered Brown Brothers products and services,

Circle 184 on Reader Service Card

NY Passes Long Beach

As Nation's No.2 Box Port

The Port of New York and New

Jersey has moved to second place among U.S. containerports, with the

Port of Los Angeles first and the

Port of Long Beach slipping to third.

Long Beach has been in the num- ber two spot since November 1990 when it edged New York/New Jer- sey out of the slot.

Despite the ongoing competition from warmer weather ports, the New

York and New Jersey harbor net- works handled 116,035 twenty-foot equivalent unit containers (TEUs) in May 1992, an increase of 17 per- cent from the same period last year.

Los Angeles handled 124,738 TEUs equating to a rise of 13 percent.

Reports attribute the New York/

New Jersey Port Authority's suc- cess to improved tonnage assess- ment, reduced payments to the longshoremen's income fund, better intermodal service, more cargo from southern Asia, and an incentive pro- gram for shippers.

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