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Marine Services Div. Geosource Inc. Delivers Self-Propelled Barge Construction on a self-propelled work barge for Gulf Energy & Minerals Company U.S. has been completed by the Marine Services Division of Geosource Inc., Har- vey, La. According to Marine Services Division vice president and general manager D.M. Gordon, Geosource performed a complete turnkey operation, including pro- viding and installing all equip- ment for the new 90-foot by 28- foot by 5-foot 6-inch barge. The Marine Services Division (formerly known as the Shipyard Division) of Geosource Inc. pro- vides repair, construction and modification services for barges, dredges, inland drilling barges, tenders and other vessels, as well as drilling rig equipment repair. The division has two locations on the Harvey Canal near New Or- leans, La., and one on the Intra- coastal Canal at Morgan City, La. For a copy of the Marine Services Division complete capa- bility portfolio, write to Dan M. Gordon, Marine Services Division, Geosource Inc., P.O. Box 24, Har- vey, La. 70059. Large Modern Fleet BARGES FOR RENT Deck Barges • Inland/AH Ocean Material Barges • OH Barges Spud Barges • Crane Barges THIRD LNG FROM QUINCY—The LNG Capricorn, General Dynam- ics' third 125,000-cubic-meter liquefied natural gas tanker, has suc- cessfully completed sea trials and was officially named during recent ceremonies at Quincy, Mass., where she was built. Her sponsor was Mrs. Campbell McC. Anderson, wife of the director (shipping and special projects) Burmah Oil Co., Ltd. The LNG Capricorn will enter service transporting LNG from Indonesia to Japan under long-term charter to a subsidiary of Burmah Oil Co. CENTRAL MARINE SERVICE. INC. "Personal, total service... inland, coastal and all ocean." 24-hour service (504)581-2424 1200 Hibernia Bank Bldg., New Orleans, La. 70112 Use Of Fuel Additive Shows Bunker Oil Savings Of Over 10% In a study funded by the Mari- time Administration of the U.S. Department of Commerce, Sea- worthy Engine Systems of Essex, Conn., has reported on the effect of commercial fuel oil additives on steamship boiler condition and fuel economy. The most effective additive was a dispersion of in- organic magnesium oxide, organic magnesium and organic manga- nese, identified by the Rolfite Company of Stamford, Conn., as BIGGER AND Announcing the West Coast's largest float- ing drydock (902' x 185'), available January, 1979. Bring us your repairs, conversions and new construction contracts, for fast turnaround and dollar savings. NORTHWEST MARINE IRON WORKS U.S. Offices: P.O.Box 3109 Portland, Oregon 97208 Telephone: 503-228-8222 TWX: 910-464-6107 Telegram: NorMarine European Representatives: ATPAC Maritime Agencies, Inc., Athens, Piraeus, Greece A Silchenstedt, Bergen, Norway A/S Krogstads, Oslo, Noway Paul Gregersen, Copenhagen, Denmark CHIEF ENGINEER FOR NEW GEOPHYSICAL EXPLORATION SHIP Mobil Oil Corporation seeks a Marine Engineer with 2 or more years experience as a Chief Engineer or First Engineer on a geophysical exploration motor vessel equivalent to 2100 gross tons and who has a U.S.C.G. license as Chief Engineer of Motor Vessels of at least 5700 h.p. We desire a BS in marine engineering, but will definitely consider those with marine engineering courses/background. Your responsibilities will include . . . • Supervision of the ship's Engineering Department, including maintaining records and inventories. • Supervising shipyard and repair and overhaul work. • Operation, maintenance and repair of all machinery, refrig- eration, air conditioning and electrical systems on the ship. You will be initially stationed in Japan until the Fall of 1978 and then relocate to either Houston or Galveston, Texas. This position requires approximately 60% travel at sea—with an 8 week on-board and 4 week off schedule in addition to vacation time. We offer excel- lent benefits and a good base salary commensurate to experience plus additional bonus for on-board days. To receive immediate atten- tion, send your complete resume, including salary history, in confi- dence to: Mr. C. A. Reinke, Jr., Dept. 101 MOBIL OIL CORPORATION P.O. Box 900, Dallas, TX 75221 Mobil We are an equal opportunity employer M/F one of the company's marine products. The actual savings realized was a 10.3 percent improvement in fuel economy and sharply reduced boiler maintenance. The ships used in the study each consumes 29,250 tons of Bunker C fuel per year, assuming 17,500 shp normal pow- er and 300 days per year under- way. At a fuel cost of $80 per ton, the yearly fuel bill is $2,300,000. A 10.3-percent fuel saving repre- sents $236,900. Additive cost is less than 1 percent of fuel cost for a final saving of over $210,000 per ship, per year. That is equiva- lent to an energy saving of 13,694 barrels of oil per year, per ship. The Maritime Administration evaluation was conducted aboard six jumboized Mariner-class (C6- S-la) U.S.-flag containerships. Boilers were "run against them- selves" to strengthen test results. Test boilers were thoroughly cleaned and inspected and run for one trip without the additive to establish baseline data. The boil- ers were cleaned and inspected, and the additive was used for a total of three trips (approxi- mately 2,000 hours steaming time). The boilers were inspected again and then run without addi- tive to reinforce baseline data. Rolfite also offers a packaged treatment system which auto- matically meters additives into the main fuel delivery line during bunkering. Capable of hands-off automatic operation, the system assures thorough mixing of the fuel and additive. Admiralty MM remains fully dispersed and can- not settle out in tanks and lines, due to the submicron size of the magnesium oxide particles. Copies of the U.S. Maritime Administration Report MA-RD- 920-77097 are available at $6 each from Rod Rodrigue, The Rolfite Company, 300 Broad Street, Stam- ford, Conn. 06901. Full informa- tion on Admiralty Marine Prod- ucts is also available from Rolfite. 40 Maritime Reporter/Engineering News
