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PROPULSION UPDATE There's Only One Choice in the Northeast A AMERICAN J Mk SHIPYARD Corp. J For Ship Design, Construction, Conversion & Repairs The Equipment & Expertise*J4^uNeed • 2200 Ton Marine 2500 20^p Fee|De\3wJteTBerthing ig, Carpentry, Electrical, g & HVAC Shops fied for U.S. Government Contracts let Us Bid On Your Next Project 1 Washington Street • Newport, Rhode Island 02840-0943 Tel (401) 846-6000 • Fax (401) 849-7964 Visit Our Web Site: americanshipyard.com SEMCO mm MARINE INC. — • Switchboards and Consoles^ • Electrical Installation^WcCdwide • 24-hour Service At ^pk l^brt • European S^areFfeij^Vjw Cable on Stock • S^flUCGT^yalj^lecorder & Masterclock • SEM»F^Watermist Fire Fighting CONTACT US NEXT TIME YOU HAVE ELECTRICAL PROBLEMS OR NEED SPARE PARTS! Phone (954) 792-9666 Fax (954) 321 -6517 3721 S.W. 47 Ave. - Ste. 309 • Ft. Lauderdale • FL 33314 - U.S.A. Image Size 14" x 19 3/4" More limited editi; Please call foi $190 Remarque iginal aI paintings available, oilg^write to: IT STUDIO Old Saybrook, CT 06475 one/Fax (860) 395-0029 ICE VALVli & FITTING a division of V.V.S.. Inc. - Servicing the Gulf Coast for all your piping needs - Your full service sotrceVfor all U.S. standard and metri^iaj\s. pipe fittings, pip<\trifi tuVng. (713) 641-6733 13)641-3107 Mobile, AL • Phone: (334) 438-5130 Fax: (334) 438-5140 New Sulzer Offers Mere Cempact Versions Of RTA-2U We Make It Happen! NEW CONSTRUCTION Hwy. 90 East L P.O. Box 1190 PH. 318/824-2210 Jennings, LA 70546 FAX 318/824-2970 New Sulzer Diesel Ltd. has introduced improved versions of its Sulzer RTA52U, RTA62U and RTA72U low-speed marine diesel engines. All new versions are shorter and lighter than the original designs, and each has been modernized with respect to installation ease onboard ships. Installation work is reduced through the use of fewer holding- down bolts on the engines, and also by improv- ing access to them. In addition, the crankshaft has been given wider webs to further reduce stresses. However, it is key to note that there has been no change in any of the engines main parame- ters, including power, speed and consumption. The modernized RTA-2U engines are desig- Circle 256 on Reader Service Card IMETEC, INC. NEW ENGLAND TRAWLER TEL: 617/884-4354 FAX: 617/889-5240 -.o WINCHES rLJ WINDLASSES CAPSTANS. "V) U HOISTS \Q HYDRAULIC POWER UNITS Circle 258 on Reader Service Card Circle 260 on Reader Service Card Circle 259 on Reader Service Card Circle 261 on Reader Service Card LEEVAC SHIPYARDS, INC. CONVERSIONS REPAIRS DRYDOCKIN /ESSELS BARGES SPECIALTY VESSELS Circle 257 on Reader Service Card nated the B versions in the technical documen- tation to distinguish them from the original designs. They incorporate many detailed design solutions from the RTA-T series, fea- tures that have already been well received by engine builders as well as shipbuilders. The most visible change is the reduction in engine length of 255 mu^fWlthe RTA72U engines, 214 mm for ike RT^A62jP and 175 mm for the RTA52U^HFhfs<^bre equivalent to a reduction ofcuWit/^t percent in length of the befcj^hig^ed by r^desi|rnt^^l after end of thefer^ne with d^glWAiecr thrust bearing. The ~shorteMttu^urti*mso allowed the after- most Uti^od^Mpr omitted. The engines are now the same electronically con- trolled ^Mnder lubrication system as the RTA- T engine series. The multi-level accumulator system is retained, but it is served by lubricating pumps driven by a frequency controlled electric motor. Local oil distributors on each cylinder are designed to considerably reduce the number of pipes required. The engine weights have been reduced by 15 tons for the RTA72U, 10 tons for the RTA62U and five tons for the RTA52U. The RTA-2U version B engines will be designed to meet planned IMO limits for NOx exhaust emissions without additional equipment. For more information on the technical specifications of the new engines Circle 32 on Reader Service Card Maritime Reporter/Engineering News
