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when, due to the expense of burn- ing heavy oil versus diesel oil, the boats were converted back to die- sel oil service and the heavy-oil equipment was removed. Many lessons were learned from these years of operating on blended fuel oil and these lessons were thoroughly studied and considered when the Inland Waterways Divi- sion decided to build the M/V Rob- ert A. Kyle and make it capable of burning blended fuels. The M/V Robert A. Kyle had op- erated for approximately 950 hours on blended fuel when the decision was made to replace the power packs in the center engine. Since the first phase of the test was to be a shakedown of the fuel handling and delivery equipment, the power packs were not renewed prior to using heavy fuel even though EMD recommends chrome cylinder lin- ers when using high-sulfur fuel. The performance of the cast-iron liners during the shakedown phase proved to be quite promising so that we and EMD decided to test both cast-iron and chrome liners in the wear evaluation phase of the test which is currently under- way. Through the cooperation of EMD and the oil companies, the engines were thoroughly inspected and borescope photographs of the cylinder walls, exhaust valves and turbo screen were taken to record their condition before heavy fuel was introduced to the engine. There were no unexpected consequences attributable to the use of heavy fuel during the shakedown phase of the test. The Kyle has experi- enced no failures on the center en- gine due to blended fuel oil. For further information and cop- ies of the above presentations, circle the appropriate number on the Reader Service Card in the back of this issue. Belcher Oil Company (Quality and Availability of Blended Ma- rine Fuels in 1983)—Circle 51; Alfa Laval, Inc. ("The Alfa Laval Line-Up Past And Present")—Cir- cle 52; Drew Chemical Com- pany ("The Role Of Chemicals and Fuel Analysis in the Marine Industry")—Circle 53; MAN/B&W, Alpha Propulsion Systems ("Engines on the River")—Circle 54; MaK ("Heavy Fuel Operation with MaK Diesel Engines for Mul- tipurpose Application and Marine Propulsion")—Circle 55; Transa- merica Delaval (Exhaust Emis- sion Control Techniques of Today's Large-Bore Medium-Speed Diesel Engines for Heavy Fuel Opera- tion's—Circle 56; Warstila Die- sel (Reliable Heavy-Fuel Engine Component Designs")—Circle 57; Waukesha Engine (The Wauke- sha AT25 Series Diesel)—Circle 58; ACBL (The ACBL Blended Fuel Program")—Circle 59; Mid- land Ross ("Midland's Heavy Fuel Oil Experience")—Circle 60; Heartland Transportation ("The Inland Waterways Division Pott Industries Inc. Blended Fuel Pro- gram")—Circle 61. •4 Circle 122 on Reader Service Card _ r y * ~ • 7 r r A CRUISES BEYOND EXPECTATION! Reach beyond your vacation expectations with a value-packed cruise from Exploration Cruise lines® F or an extraordinary experience, take an extraordinary ship. Our Explorer Class® ships are in a class by themselves. They're small enough to cruise in close to the really interesting attractions — visiting de- serted lagoons, primitive jungles, glaciers, and wildlife — even making bow landings so you can explore pris- tine beaches and uninhabited islands. And, they're big enough to give you the solid comfort we know you want- spacious staterooms, comfortable cocktail lounge, picture - windowed dining room, expansive sundecks. Enjoy hearty, exquisitely prepared meals. Be spoiled by a crew whose at- tentiveness and enthusiasm go be- yond service. See places and do things only a few get a chance to experience. The friends, memories, excitement, and good cheer make your Explorer Class® cruise unforgettable. Cruise the waters of TAHITI—the romantic jewel of the South Pacific. 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Follow the historic Lewis and Clark route on the COLUMBIA & SNAKE RIVERS—Great Rivers of the West. Retrace historic sternwheeler routes cruising the Sacramento and San Joaquin Rivers of the famous CALIFORNIA DELTA. Reserve now for our Fall/Winter Tahiti and Panama Cruises, and start planning for our other spectacular Spring and Summer cruise offerings. See any travel agent or ask us. YES, send me full color brochures on: • ALASKA & INSIDE PASSAGE • COLUMBIA & SNAKE RIVERS • CALIFORNIA DELTA • TAHITI • PANAMA & THE CANAL V STATE ZIP MAIL TO: EXPLORATION CRUISE UNES 1500 Metropolitan Park Bldg., Dept. BYK, Seattle, WA 98101. Or CALL TOLL-FREE 1-800-426-0600 for brochures or information (in Seattle Call 624-8551). CRUISE LIMES year warranty, plus the performance and reliability of the Deutz engines in their first vessel (15JOOO hours of unin- terrupted service!) convinced Exploration Cruise Lines to select twin Deutz SBA12M 816 engines for installa- tion in each of their latest vessels. 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