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CARRIES A LOT OF WEIGHT. Nabrico barges never retire. They're out there now. Carrying megatons of cargo. Liquid and dry. People trust the barge because the Nabrico name is synonymous with quality throughout the water transportation industry. Whatever the cargo, Nabrico engineers design and build the best barge for the job. And for the money. With any special design modifications or innovations needed to ensure years of safe, low-maintenance, cost-efficient, high-performance operation. Over six decades of experience, engineering and expertise go into every Nabrico barge. And tons of steel go into each design to assure you many years of dependable service. And more tons of cargo. Our business is meeting needs and solving problems. But don't take our word for it. Ask the owner of a Nabrico barge. He can tell you how much weight Nabrico carries with him. <(( © ))n A Subsidiary of the American Ship Building Company For information and a quotation, write or call: NASHVILLE BRIDGE COMPANY P.O. Box 239 Nashville, Tennessee 37202 (615) 244-2050 Write 277 on Reader Service Card Shown above at the SNAME Northern California meeting are (from left): Thomas B. Cole, chairman; Roger L. Potash, vice chairman and author; Keith Michel, Tech- nical and Research Committee; and James C. Stokesberry, secretary-treasurer. SNAME Northern California Hears Mini-OTEC Paper A paper titled "Mini-OTEC De- sign and Testing" was presented by Dr. Roger L. Potash of Lock- heed Ocean Systems at a meeting of the Northern California Sec- tion of The Society of Naval Ar- chitects and Marine Engineers in San Francisco recently. An OTEC (Ocean Thermal En- ergy Conversion) plant uses the temperature difference between warm water on the surface and cold water deep in the ocean to generate power. Mini-OTEC was a small demonstration plant built cooperatively by the Lockheed Space and Missiles Co., the State of Hawaii, and the Dillingham Corporation. It was the first suc- cessful closed cycle-OTEC plant and the first at-sea OTEC plant. It produced power for about 600 hours between August 2 and No- vember 18, 1980, while moored in approximately 3,000 feet of water off Keahole Point, Hawaii. The author briefly described design, construction, installation, and operation of the barge- mounted plant, and emphasized that machinery and components were chosen for ready availabil- ity and that some were loaned or donated to the project. Therefore, Mini-OTEC was much less effi- cient than a larger, more thor- oughly optimized installation would be. Approximately 15-kw net electrical power was gener- ated from a generator output of about 50 kw and a theoretical thermal power of about 93 kw. No significant problems or break- downs were encountered. An extensive discussion period followed the paper. Robert Stein- bach of Lockheed, who operated the Mini-OTEC Plant, was pres- ent in the audience and answered many of the questions. Parmater Named President Bultema Dock & Dredge And LaCrosse Dredging John R. Parmater has been named president of Bultema Dock & Dredge Company and LaCrosse Dredging Corporation. Both the Muskegon, Mich.-based firms are subsidiaries of The Canonie Com- panies, Inc. Mr. Parmater, a grad- uate of the University of Colorado holds a BSCE degree. Prior to this appointment, he served as vice president of operations for five years, and held the position of executive vice president of Bul- tema Dock & Dredge Company for one year. He has also served as vice president of LaCrosse Dredging Corporation since 1976. Bultema Dock & Dredge Com- John R. Parmater pany specializes in dredging, ma- rine construction, intake/dis- charge structures and subaque- ous pipeline placement. LaCrosse Dredging Corporation, one of the oldest hydraulic dredging compa- nies in the country, has been in operation since 1907, and special- izes in hydraulic dredging. 24 Maritime Reporter/Engineering News
