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forces underway.The new oiler has a cargo capacity of 183,500 barrels of oil in 18 cargo tanks and is capable of simultaneously receiving, storing and discharging two separate grades of cargo fuel. All cargo valve and pump operations and the ship's se- gregated ballast system are manipu- lated from the cargo control center located in the ship's aft superstruc- ture, which has an overview of the entire underway replenishment deck. Cargo underway replenishment is accomplished using transfer hoses suspended by a span wire automati- cally maintained in a constant-ten- sion range. RAILSHIP III Train Ferry Schichau Seebeckwerft This year, Germany's Schichau Seebeckwerft AG,a member of the Bremer Vulkan Group, completed what is reportedly the world's larg- est train ferry, the 622-foot Railship III, for the Railship Group, Liibeck- Travemiinde. Managed by the German shipping company H.M Gehrckens GmbH, Hamburg, the 10,000-dwt railferry adds about 2,000 meters of rail length on three decks to the Rail- ship Group's total of 5,600. Like her sisters, Railship I and Railship II, the railferry operates between Trav- emiinde in Northern Germany and Hanko in Southern Finland. The Railship III, with a width of 70 feet and design draft of 19 feet, carries 90 railcars on three decks. Private cars can be loaded on the weatherdeck by car-loading/unload- ing davits on both sides of the ship. Built to meet the requirements of Germanischer Lloyd Class E4 and Finnish Ice class 1A Super, the Rail- ship III is propelled by a pair of Wartsila Vasa 46 main engines, the most powerful diesels built by Wartsila Diesel, which each gener- ate 8,145 kw (10,922 hp) at 450 rpm. Designed for heavy fuels up to a vis- cosity of 700 cSt/50 degrees C, the engines drive a Lips CP propeller through Lohmann & Stolterfoht re- duction gearing. Auxiliary power is supplied by two Wartsila Vasa 4R32 heavy fuel engines, which produce 1,620 kw each at 720 rpm. The auxiliary en- gines operate on the same fuel as the main engines. Equipment List Main engines(2) Wartsila Vasa Generator engines .... Wartsila Diesel Reduction gears . .Lohmann & Stolterfoht CP propeller Lips Clutches Voith Turbo Separators Westfalia Separator Refrigeration Sabroe Radar Krupp Atlas Elektronik Gyrocompass C. Plath Signal lights Aqua Signal RELENTLESS Ocean Surveillance Ship Trinity Marine The Trinity Marine Group's Halter Marine, Inc., Moss Point, Miss., shipyard completed a six- December, 1990 ship, approximately $85-million contract with the U.S. Navy, with delivery of the ocean surveillance ship USNS Relentless (T-AGOS 18). The last of 18 planned monohull T-AGOS class ships to join the Navy's ocean surveillance program, the 224-foot-long Relentless has a beam of 43 feet and draft of 15 feet 1 inch. Operated by the Military Sealift Command (MSC) and staffed by civilian technicians, the Relentless will tow electronic devices to moni- tor the movement of submarines. The Relentless will deploy towed linear arrays of hydrophones known as the Surveillance Towed Array Sensor System (SURTASS). SUR- TASS is comprised of flexible, neu- trally buoyant cable containing a clarge number of passive micro- phones, each tuned to specific fre- quencies enabling identification of noises made by submarines many miles away. The data is processed and trans- mitted to shore via satellite, where it supplements information from seabed arrays. Main propulsion and other ship's service on the Relentless is diesel- electric, provided by four Caterpil- lar/Kato 600-kw generators driving two General Electric motors. Power is transmitted through two shafts (continued) Circle 304 on Reader Service Card 39
