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Outstanding (continued) the Santa Maria Basin offshore Cal- ifornia. The rig was disassembled at the McDermott yard and shipped to the West Coast by rail. The ability to disassemble a rig in modules small enough to ship by rail represents an advantage for the owner and adds a flexibility lacking in typical modular rig packages. As these packaged rigs can be broken down into smaller components than conventional modules, they can be shipped by rail or truck. The small- er packages can be handled without the heavy equipment modules re- quire; the ordinary lifting equip- ment available on platforms can handle them. On the other hand, if using heavy-lift equipment is desir- able, the packages can be consoli- dated to make full use of the lifting capacity available. The complete rig can be assem- bled with approximately 50 lifts us- ing platform-mounted, material- handling cranes to lift packages of 40 tons or less, and about 10 lifts, depending upon completeness of package consolidation, using a der- rick barge to lift units of up to 500 tons. Total maneuverability is a matter of degrees—SCO" With Elliott White Gill thrusters, you can turn a vessel in its own length. Position it broadside. Negotiate congested docks and tight berths. Counteract strong cross-currents. Even provide main propulsion. Without extending outside the hull lines of the vessel, reliable White Gill Units provide thrust that is completely variable throughout 360°, and is not diminished by ship motion. That's total control— with minimum hull resistance and without danger of fouling or damage by underwater obstructions— even in the shallowest water in which the vessel can operate. Control systems range from a simple joystick (lever) to computerized dynamic positioning. Hundreds of these easy to install units—original equipment and retrofits—are saving time and money on tankers, tugs, oil rig service vessels, barges, research ships, salvage vessels, cable ships, ferries and other vessels throughout the world. For full information on White Gill thrusters in four basic models and a wide range of sizes, call or write for a copy of our Bulletin Q-57A. Elliott Company, P.O. Box 239. Springfield, Ohio 45501. Phone (513) 324-4191. TWX 810-452-2865. Or Elliott Turbomachinery Ltd., Zeta House, Daish Way, Dodnor Lane, Newport, Isle of Wight, England P030 5XJ. Phone Newport, I.O.W. (0983) 521333. Telex No. 86216 ELLIOT G. See us at Booth 758 at the Work Boat Show. White Gill. It's like taking your tugs with you. UNITED TECHNOLOGIES ELLIOTT The Helmerich & Payne rig was designed by Hudson Engineering, a McDermott subsidiary located in Lafayette, La. The complete struc- ture, which weighs about 1,000 tons, was designed to meet criteria for the Zone 4 seismic area and 100-year storm, as defined by API RP2A. Subassemblies are equipped with individual lifting eyes, and are bolted together using more than 3,000 bolts made of steel meeting these seismic and storm require- ments. INDEPENDENCE Halter-Moss Point The rocket booster recovery ves- sel Independence, built by the Moss Point, Miss., shipyard of Halter Ma- rine, Inc., was delivered at mid-85 to Lockheed Space and Operations Company, for whom the vessel was constructed under a contract from Lockheed Shipbuilding. The 200- foot Independence will perform the key role in the recovery of rocket boosters launched from Vandenberg Air Force Base in California as part of the space shuttle program. Main propulsion is provided by two Cummins KTA50-M diesel en- gines, each rated at 1,250 bhp at 1,850 rpm, driving Lips propellers via Niigata reverse/reduction gears and Halter shafting. Two other Cummins diesels, model KTA19-M, power the Elliot White Gill bow and stern thrusters. The vessel is fully equipped to handle all necessary diving require- ments; in addition to complete div- ing equipment, she is fitted with air refilling systems and a hyperbaric decompression chamber. As a safety percaution, the bow and stern thrusters will be used for propulsion when divers are in the water. Exceptionally complete electron- ics systems for navigation and com- munications have been installed. These include Magnavox satellite navigation and Loran systems, Dec- INDEPENDENCE Major Suppliers Main engines (2) . Cummins Reduction gears (2) . . . . . . Niigata Propellers (2) . . . .Lips Engine controls . . Wabco Shafts . . Halter Shaft brakes . Mathers Keel coolers Fernstrum Bow & stern thrusters . Elliot White Gill Generators . . .KATO Generator engines . Cummins Firefighting system . . . . . . Goulds Emergency generator . . . Cummins Towing winch & anchor windlass HBL Satnav & Loran systems . . Magnavox Position plotter . . Decca Radars (2) Krupp Atlas Echo depth sounder . . . . . . Simrad Auto direction finder . . . . . . Simrad Weather facsimile recorder . . . Alden Speed log system . . Junger Satcom system Magnavox HF/SSB radio . . King VHF radio Texas Instruments Aircraft UHF transceiver . . Magnavox General-purpose receiver . . Harris Aircraft VHF radio . . Narco CB radio General Electric Hand-held VHF radio . . . . . Repco Lifeboat radio ITT Mackay Circle 200 on Reader Service Card
