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sea trials, this latest model of the Sulzer design achieved a fuel oil consumption rate of 117.5 grams per brake horsepower hour. The Idemitsu Maru was designed and equipped with the latest ener- gy-saving features, and is operated with a reduced crew of only 16 per- sons. IHI's LV (Low Viscosity) hull form minimizes resistance by im- proved design, and the bulbous open stern lowers the thrust reduc- tion and increases wake gain by improved stern hull form design. The low propeller speed of 65/62.5 rpm improves propeller efficiency and reduces required propulsion power. The IHI SSG-MK III (Super- Economical Shaft Generator Sys- tem) saves fuel by generating elec- tric power either by feeding steam from an exhaust gas economizer to a turbogenerator, or by a shaft gener- ator system taking power off the propeller shaft. The IHI Electric Differential Epicycle Drive can con- trol generator frequency within the allowable range against the change in main engine output between 40 and 90 percent of mcr. The ship is equipped with an IHI Navigationmate, an automatic navi- now" to give your on-time repair. Big and powerful, the drydock at Bethlehem's new Sabine Yard can lift most vessels that call at Gulf Coast ports. The drydock can also be configured with its sections linked in two batteries, providing a docking area of 362 x 414 ft., enabling it to lift any mobile offshore drilling unit in the Gulf of Mexico. on the Gulf Coast America's newest yard, located at Port Arthur, Texas, stands ready to serve all your ship repair and maintenance needs. Named the Sabine Yard, this facility features one of the largest drydocks in the USA. The Executive Offices: Bethlehem Steel Corporation Marine Construction Group Bethlehem, PA 18016 Phone: (215) 694-5690 Telex: 84-7417 (BETHSCO BETM) TWX: 510-651-4796 (BSCO BETH) Cables: BETHSHIP Bethlehem. PA numbers prove the point: a clear docking area of 122 ft. x 829 ft., 30 ft. of water over the blocks, and lifting capacity of 64,000 long tons. A $20-million investment, Sabine Yard can now provide all the skilled trades needed for repairs and maintenance in the drydock. And these on-site services are backed up by the fabricating and manufacturing shops at Bethlehem's nearby Beaumont Yard. For a prompt quote on your job and to schedule your ship into the Sabine Yard, contact the Estimating Department at Beaumont: Phone: (409) 838-6821 Telex: 387192 (BETH STLBMT) Mail: Box 3031, Beaumont, TX 77704 gation system with digital chart navigation combined with Loran C and NNSS. Navigation, machinery, radio, and cargo and ballast opera- tions are centrally controlled from the bridge. TV cameras monitor the engine room and cargo manifolds, and the deck machinery is fitted with a central hydraulic system with remote operation. A sequential re- mote control system for warm-up of the cargo pumps includes remote start and stop operation. The tanker's segregated ballast tank capacity is sufficient for safe navigation even in rough sea condi- tions without filling the cargo oil tanks with ballast water. The exteri- or hull is coated with self-polishing antifouling paint. IDEMITSU MARU Major Suppliers Main engine IHI/Sulzer Auxiliary boiler, exhaust gas economizer, shaft generator turbine, deck machinery, inert gas system, & Navigationmate IHI Steering gear Kawasaki Auxiliary diesels Daihatsu Diesel & shaft generators . . . Nishishiba Main switchboard Terasakiu Cargo oil pumps Shinkokinzok Radar & ARPA JRC Gyrocompass & autopilot . . . Tokyokeiki Data logger Terasak ISOLDE Kockums The pure car/truck carrier Isolde has been delivered by Kockums AB of Malmo, Sweden, to Wallenius Lines of Stockholm. With a capacity of 6,230 passenger cars and 540 heavy vehicles, the new ship has an overall length of 649.6 feet, beam of 105.9 feet, depth to weather deck of 103.35 feet, and scantling draft of 38.7 feet. The main engine is the latest model low-speed Sulzer 7RTA68 diesel rated 18,100 bhp at 106 rpm, providing a service speed of 20 knots. Isolde is a unifuel ship, with the main and auxiliary engines burning the same heavy fuel oil of up to 600 cSt. Direct-reversing and driving a fixed Lips propeller, the main engine is remote-operated from the bridge or the engine con- trol room. Machinery fulfills the UMS requirements of Lloyd's Reg- ister of Shipping for unattended en- gine room. Electric power is provided by three 1,600-kw alternators driven by Wartsila-Vasa 6R32 diesel engines installed in a separate compart- ment. Heavy vehicles are loaded on the 4th, 6th, and 9th decks, which are reinforced to carry heavy loads. The 5th, 7th, and 10th decks, and part of the 8th, are divided into hoistable sections that allow vehicle heights of up to 20.34 feet. The 6th deck is normally the car entrance deck, but at higher berths the middle outside ramp may also be attached to the 7th deck. Two outside loading ramps are posi- tioned at the starboard side; the aft one is rigged with a 25-degree aft angle to accommodate long vehicles. Internal ramp systems between decks and to doors and openings in (continued) 29
