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First Super 300 Class jackup drilling rig Glomar Baltic I shown moving through the Brownsville Ship Channel on the way to its first drilling assignment in the Gulf. A new design, the rig was built by Marathon LeTourneau's Gulf Marine Division in Browns- ville, Texas, and will be operated by Global Marine Company. First Marathon Super 300 Jackup Now Drilling In Gulf Of Mexico The Glomar Baltic I, first Marathon Le- Tourneau Super 300 Class jackup drilling rig, recently began its first drilling assignment in the Gulf of Mexico. The rig, which is being op- erated by Global Marine Company, wras built at Marathon's Gulf Marine Division in Brownsville, Texas. A new design, the Super 300 is a large jackup designed to work in lo- cations with water depths and environmental conditions too severe for standard 300-foot water depth jackups but not hostile enough to require a Marathon Gorilla Class rig. The Glomar Baltic I is fitted with the Super 300's optional leg length of 515 feet (the standard length is 448 feet). In this enhanced configuration, the rig can drill in 350 feet of water with 100-knot winds and 55-foot-high waves. Like the Gorilla rigs, the Super 300 utilized the Marathon LeTourneau Slotilever™, which allows drilling in both the slot and cantilever positions. With the derrick package over the slot, the rig's drilling mode and survival mode are the same. The new rig's hull is 270 feet long by 268 feet wide by 28 feet deep. It is designed for a normal elective variable load capacity of 4,250 tons plus 650 tons derrick pull-in load. The Super 300 is classed +A1 by the Amer- 44 ican Bureau of Shipping and built in accord- ance with the Mobile Offshore Drilling Unit Regulations of the U.S. Coast Guard. When required by the customer, the Super 300 can be constructed to meet the requirements of the U.K. Department of Energy, the Nether- lands Department of Mines, and other regu- latory bodies. Anixter Bros. Publishes New Buyers Guide Of Products For Business Communications Anixter Bros., Inc., Skokie, 111., has pub- lished a new telecommunications catalog: "A Buyers Guide of Products for Business Communications." The buyers guide features a full line of busi- ness communications products for every facet of industry and commerce that uses telecom- munications products for voice, video or data transmission. Products include subscriber equipment, and a complete line of communi- cations wire and cable such as inside/outside telephone wire, plenum, data and station wire and cable. Anxiter stocks the products of hundreds of leading manufacturers including AT&T's Western Electric, TIE, Comdial, AMP, SAN/ BAR, TRW, Porta Systems, and many others. The company maintains a network of fully stocked computer-linked distribution centers in all major markets in the U.S. and Canada. Anixter also provides services such as repair, refurbishment, pre-assembly and pre-connec- torization for a wide range of telephone products. For a copy of the Buyers Guide, Circle 67 on Reader Service Card Litton Division Awarded $23-Million Navy Contract For Gas Generators Litton Systems Incorporated, Clifton Preci- sion Instruments and Life Support Division, Davenport, Iowa, has been awarded a $22,995,500, multi-year firm-fixed-price con- tract to furnish 65 oxygen/nitrogen, liquid/gas mobile generation systems and related data. The Naval Regional Contracting Center, Phil- adelphia, is the contracting activity. Union Flonetics Announces Availability Of R-10 Line Of Relief Valves Union Flonetics, Clinton, Pa., a division of The Union Corporation, has announced the availability of the R-10 line of relief values designed to prevent overpressurization of shipboard piping systems. Developed for the U.S. Navy and built to MIL-V-24332 (liquid service) and MIL-V-22549 (gas service) speci- fications, these are available in sizes through 8 inches in bronze or steel. Special attention to the spring design assures that "set point" repeatability is maintained throughout the life of the valves. Union Flonetics R-10 Relief Valves have been tested and meet the vibra- tion requirements of MIL-STD-167 and high shock requirements of MIL-S-901. For additional information on the R-10 line, Circle 66 on Reader Service Card
