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United States Lines Elects D.G. Aldridge Exec. Vice President Donald G. Aldridge Donald G. Aldridge has been elected executive vice president of United States Lines, it was an- nounced by E.J. Heine Jr., presi- dent of the containership company. Mr. Aldridge joined the com- pany in 1970 as senior vice presi- dent for marketing and sales. He is a former director and executive vice president of American Export Isbrandtsen Lines. At United States Lines, the new executive vice president was in- strumental in the organization and development of the company's Tri- Continent containerized freight service between Europe, the Unit- ed States and Far East. The company inaugurated the 15,000-mile "Sea Bridge" last year and now has 16 containerships, the largest new fleet of its kind, oper- ating that trade route. Intercoast- al service between the East and West Coasts is also included. Mr. Aldridge is a graduate of St. John's University. He is a mem- ber of the Downtown Athletic Club and the Whitehall and For- eign Commerce Clubs. Ocean Drilling Plans To Build Drilling Rig Costing $20-Million Plans have been announced by Ocean Drilling & Exploration Co. for the construction of a $20-mil- lion semisubmersible drilling rig. According to Alden J. Laborde, president, "slightly more than half" of this contract will go to Avondale Shipyards, Inc. The re- mainder of the contract will go to firms not yet named. "This will be the fifth largest drilling rig that Avondale has built for Ocean Drilling and we are, of course, hopeful of building more, which at this time would appear to be a good prospect," Mr. La- borde stated. Pancontinental Marine Appoints Peter Klopfer Peter M. Klopfer has been ap- pointed manager, sale and pur- chase, of Pancontinental Marine, Inc., 50 Broadway, New York, N.Y. 10004, according to J.R. Kir- sten, president of the company. Mr. Klopfer, who was previous- ly with Hellenic Lines, Ltd., will be in charge of Pancontinental's activities as shipyard representa- tives and sale and purchase bro- kers. Dorsey To Build Bulk Resin Containers For Union Carbide An order to build 500 seam weld- ed all-aluminum bulk resin con- tainers for the Chemicals and Plas- tics Division of Union Carbide Corporation, has been awarded to Dorsey Trailers, Elba, Ala., it was announced by George L. Collier, president. The contract figure was given as in excess of two-million dollars. Especially designed for hauling resin pellets, the 30-foot by 8-foot by 8-foot boxes will be of exterior post construction to provide smooth interior surfaces. Specifi- cations call for baffles in all cor- ners to prevent trapping bulk ma- terials. Another set of baffles, be- tween two 8-inch diameter dis- charge chutes on one end, facilitate unloading by tilting. Net usable cargo volume will be 1,630 cubic feet. The roof of each container will have a 20-inch loading hatch and an 8-inch inspection port. All clo- sures will be subjected to air and soap testing to assure water tight- ness to protect cargo from con- tamination. Union Carbide uses containers extensively in transporting resins from its plants by sea, rail and truck. Dorsey, a subsidiary of The Dorsey Corporation, will build the containers at its manufacturing facilities in Elba. Building an LNG tanker? Which metal is best for your tanks: 9% nickel steel, stainless steel or Invar alloy? All three nickel alloys are excellent for tanks carrying LNG and other cryogenic liquids. Your choice depends on the de- sign you select for your ship. 9% nickel steel. The best choice for self-supporting tanks. 9% nickel steel provides a high strength-to-weight ratio and retains excellent toughness and ductility down to — 320°F. Has a low coefficient of expansion and provides excellent weld- ability. Kvaerner-Moss decided 9% nickel steel and a self-supporting, spherical- tank concept were best for its new 87,600m3 tankers soon to be built in Norway. Sell-supporting spherical-design tank utilizing 9% nickel steel. Type 304 stainless steel. Used for large-capacity, membrane-type tanks. Extremely tough and highly ductile at all cryogenic temperatures, Type 304 stainless steel has excellent formability and easy fab- ricability. One type of stainless steel membrane con- sists of thin sheets corrugated in two direc- tions at right angles. Gazocean of France selected Type 304 stainless steel and the membrane waffle de- 16 Maritime Reporter/Engineering News
