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Propulsion Systems (continued) STEAM TURBINES Steam turbines, widely used in nuclear propulsion applications, such as in the case of the Nimitz Class aircraft carriers, can be found in use aboard the U.S. Navy's 58,000-ton Iowa Class battleships. Both the battleships Iowa and Mis- souri are powered by a propulsion plant consisting of eight boilers and four GE geared steam turbines. GE Naval & Drive Turbine Sys- tems supplies advanced steam pro- pulsion and ships service turbine generator systems to U.S. Navy ves- sels ranging in size from the largest aircraft carriers to the smallest aux- iliary ships. The USS Wasp (LHD-1), the lead ship of the Navy's newest amphi- bious assault ship, has a power plant which uses two Westinghouse steam turbines, developing a com- bined 70,000 shp, with two Com- bustion Engineering boilers, to drive the ship at speeds of more than 20 knots. Voyage RepairSs&World Wide We Specialize in Voyage Repair at sea— offering Complete Service with select travel teams for the following: • Boiler Repair • Pipe Works • Steel Renewal • Engine Repair • Ballast Tanks CHEMICAL/PRODUCT TANKERS - VLCC/OBO - BULK CARRIERS 25 Years Experience at Competitive Prices in Application of Recoating of Zinc Silicates, Phenolic Epoxies - Polyurethanes and Glass Flake Polyesters • Cargo Tank Coating - Ballast Tanks • Cargo Hold Painting • Complete Assessment of any Coating Failures • General Engine Repair on Diesel Engines • Turbo Charger Service • Cargo Pump Overhaul • Welding Service "Based in Lisbon—Owned & Managed by Norwegians" Call us FIRST for complete details PROTECNO, LTD. PORTUGAL HEAD OFFICE: Rua Eugenio Castro, 13A - r/c 2800 Almada Tel: 351-1-275 24 65/276 09 03 AoH: 351-1-29016 57 Tlx: 62905 kojp Fax: 351-1-275 26 53 SINGAPORE BRANCH OFFICE: 8 Woodlands Industrial Park E Singapore 2775 Tel: 65-7531188 AoH: 65-8279711 Tlx: RS 37032 CAPMAR Fax: 65-7585252 REPRESENTATIVE-WESTERN HEMISPHERE WALTER THORSEN, INC. 79 Oweno Road, P.O. Box 755, Mahwah, New Jersey 07430-0755 Tel: 201-529-5113 Fax:201-529-5476 TLX: CCI 76Q8221-THOR-UC Space saving physical/ 0k» ' chemical design * • requires 90% less space than biological systems Low installation costs Simple, automatic operation Low operating and maintenance costs Reliable micro- processor control Quick delivery... 6 standard models Model ORCA 11-24 Model 11-12 11-24 11-36 II-165 11-330 11-500 Number people served 12 24 36 165 330 500 *lf low volume flush toilets are used the number of people can be doubled USCG certified and IMO approved Call or telex Dick Lambert for technical information, brochures or a quotation on a specific model. ENVIROVAC INC. MTBtti U.S.A. Telephone 815/654-8300, Telex 257-415 (ENVIROVAC RKD) Toll Free (USA only) 800-435-6951 (except in IL. HI, AK) Circle 306 on Reader Service Card Circle 227 on Reader Service Card GEARS The twelve 110-foot Island Class patrol boats under construction at Bollinger Machine Shop & Ship- yard, Inc., Bayou Lafourche, La., will be outfitted with ZF's BW-755 transmissions. ZF has received or- ders for 26 of the transmissions from Caterpillar, manufacturer of the engines for the boats. The twelve 141-ton-displacement WPBs will each be powered by two Caterpillar 3516-DITA engines, ca- pable of providing 2,740 bhp at 1,910 rpm. The BW-755 transmis- sions will provide a 2.33:1 reduction ratio. The Island Class patrol boats will attain an estimated speed of 26 knots. The first of the new patrol boats is scheduled for launch in December 1990. ZF marine transmissions were also specified for the 37 Island Class patrol boats previously built for the Coast Guard. Founded on an over 100-year-old tradition of supplying the Navy with propulsion and auxiliary equipment, GE, through its Naval & Drive Turbine Systems De- partment, is currently involved in providing geared steam turbines or advanced hardened and ground gears or turbine generator sets for such U.S. Navy combatant pro- grams as: the SSN-688 Los Angeles and SSBN-726 Ohio submarine classes; the CVN-68 Nimitz aircraft carrier; DDG-51 Arleigh Burke de- stroyer; and LHD-1 Wasp amphi- bious assault ship. At present, GE is involved in the development of a highly advanced propulsion system for the Navy's next generation nuclear attack sub- marine, the SSN-21 Seawolf Class. The Cincinnati Gear Compa- ny, which supplies gearing rated 2,500 hp and up, has gearing sys- tems fitted aboard LCAC, TAO-187 Henry J. Kaiser Class fleet oilers, and AOE-6 Class Fast Combat Sup- port Ships. The company's most recent tech- nological advancement is in the in- corporation of SSS/TOSI reversing unit on a 50,000-hp gearbox in the AOE-6 program. The Fast Combat Support Ships will be powered by four GE LM2500 gas turbines with four SSS clutches transmitting a total of almost 80,000 kw. SSS clutches have been supplied to about 400 naval vessels world- wide. The clutches have been used in such vessels as carriers, cruisers, destroyers, frigates, corvettes, gun- boats, minehunters and patrol boats, ranging in size from 100 to 19,000 tons. PROPELLERS The Bird-Johnson Company, Walpole, Mass., was recently awarded a contract to supply Pe- terson Builders of Sturgeon Bay, Wis., with three shipsets of controll- able pitch (CP) propeller systems for three Avenger Class Mine Coun- termeasure Ships. Bird-Johnson also supplied the propellers for the previous 11 MCM-1 Class ships. Circle 272 on Reader Service Card WHY DOES THE U.S. NAVY CHOOSE EVERPURE BROMINATION SYSTEMS FOR DRINKING WATER? r ,1...ni i... Inr Everpure, Inc . Westmont, IL 60559 Because they're safer, easier to use and more accurate over a wider range of water conditions. And they're less expen- sive in the long run than chlorination, without the taste and odor problems. The U.S. Public Health Service, NSF and CDC have given our bromination equipment top approvals for shipboard use. So have the U.S. and Canadian Coast Guards. Call us toll free to find out more about our systems designed specifically for the cruise line industry. 1-800-323-7873 Follow the U.S. Navy. Choose Everpure. 42 Maritime Reporter/Engineering News
