Page 34: of Maritime Reporter Magazine (August 15, 1969)

First Derrick Barge With Twin-Hull Construction Built By Dutch Yard A derrick barge, designed for operation in good and bad weather, was recently delivered to Santa Fe International Corporation by Van der Giessen-De Noord NV shipyard in Hol-land. The outstanding feature of the barge is the highly mobile twin-hull design. In derrick barge and pipe-laying work, undue vessel mo-tion normally introduces a measureable degree of functional inactivity. Through computer analysis and tank testing, in combination with experience gained through trial and error. Santa Fe's engineers learned how to over-come these motions for all but extremely severe sea conditions. The resulting configura-tion is such that patents have been applied for and are pending. The principles involved to overcome mo-tions are: changes in displacement by ballast-ing, changes in ballast distribution and changes in mooring-line tensions. To handle ballast-ing, eight oblong columns, each 46 feet long, are located between the hulls and the lower deck. Each of the vessel's twin hulls is 400 feet long, 38 feet wide and 20 feet high. The total barge width is 106 feet. The lower deck is 43 feet above the keel and the main deck is 12 feet higher. The I.H.C. crane, weighing 1,400 tons, has a swinging-load capacity of 500 tons and a fixed-load lift of 800 tons at 90-foot radius. Two 325-kw gas turbines head up the power machinery list. Heat recovery boilers associ-ated with the turbines supply steam that can be used to run the third power source, an 800-kw steam turbine. Three 340-hp boilers gen-Santa Fe's Choctaw can accommodate 200 men and be self-sustaining on offshore projects for 40 days. erate pile-driving steam and can also be used to drive the steam turbine and to provide steam to two 30,000 gallons per day evapora-tors. There are four two-drum hoists for handling the 20,000 pound Danforth anchors used for mooring. The barge will be used by Santa Fe for all phases of offshore construction, including: erection of drilling platforms, laying under-water pipelines, construction of bridges, etc. For pipe-laying work, a detachable ramp is installed on the starboard side. Gull Oil Transfers J.E. May And D.P. Ash John E. May, former vice-president of Ryukyuan representation and coordination for Pacific Gulf Oil Limited, has been named vice-president of transportation for Gulf Oil Company-Eastern Hemisphere in London. D. P. Ash, whom Mr. May replaces, has been appointed to the staff of the world-wide coordinator of transportation in the Pittsburgh (Pa.) executive offices of the Cor-poration. He will serve as director of devel-opment and regional coordination. A native of Great Britain, Mr. May joined Gulf in London in 1959. He held various managerial posts in transportation until his transfer to Pittsburgh in 1965 as a supervisor in the Transportation Department. He was named manager of transportation for Pacific Gulf Oil in Tokyo in 1967, and in the same year, vice-president of Ryukyuan representa-tion and coordination. Mr. Ash earned his AB degree in 1947 at Dartmouth College and his MBA at Dart-mouth's Amos Tuck School of Business Ad-ministration in 1949. He joined Gulf's Trans-portation Department in Pittsburgh in 1952 and later held various managerial positions with Gulf and its transportation subsidiaries in New York, Naples and London before be-ing named manager of transportation for Gulf Oil-Eastern Hemisphere in 1966. In 1967, he was given the additional responsibility of transportation representative for Gulf Oil Trading Company. BRAND NEW ADDITION TO AN OLD BRAND OF SERVICE cm ?g^^^ft^^^BSSm""!^^ The Finest in Towing and Lighterage Service Since 1865 140 CEDAR STREET, NEW YORK, N.Y. 10006 ? 212-964-8787 36 Maritime Reporter/Engineering News