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North Sounder (continued from page 41) The recovery system consists of two conveyor units. The debris col- lection unit is a stainless steel conveyor that leads up to the de- bris collection equipment. The oil- handling unit is a powered, 37V2- foot-long by 6-foot-wide PVC belt that loads oil into the vessel's cargo tanks. The belt is driven by a Char-Lynn hydraulic motor. The dynamic inclined plane (DIP) con- veyor is located in the forward half of the hull, behind the debris conveyor. PEMEX 652 Matsumoto Shipyards The aluminum-hulled fireboat Pemex 652 was delivered at mid- 1983 by Matsumoto Shipyards of Vancouver, B.C., Canada to Pe- mex, Mexico's national oil com- pany. This is the first of two sister ships of a new design ordered by Pemex for use in the extensive Gulf of Mexico oil tracts owned and managed by the company. These two Pemex fireboats are among the largest in the world. Each contains about 170 tons of aluminum plate and 30 tons of aluminum extrusions supplied by Alcan Canada Products, Ltd. The 500-gt Pemex 652 has an overall length of 150 feet, a beam of 32 feet and a height from the deck to the top monitor of 40 feet. Operating draft is 11.8 feet, cruis- ing range is 250 miles, and top speed is 16 knots. The vessel is powered by two MTU diesel engines, each with an output of 1,725 bhp at 1,400 rpm. Two Reintjes reduction gears transmit the power to the two Os- borne propellers. Twin Worthington pumps pow- ered by separate 1,200-bhp MTU diesels are capable of drawing sea water, mixing it with a 3-percent AFFF foam solution, and spraying it onto fires at a rate of up to 25,000 gpm. The three main mon- itors (nozzles) manufactured by the Swedish Foam Fire Extin- guishing Company can each han- dle 5,200 gpm. Cranes can position two more Stang monitors 75 feet above the water surface to handle 2,600 more gpm. The vessel car- ries 6,000 gallons of foam concen- trate to mix with the water. The hull of the fireboat is con- structed of a special Alcan alloy that includes magnesium and manganese. Pemex specified alu- minum because of its light weight and because the high superstruc- ture of the vessel would have been impossible without it. Aluminum is also corrosion-resistant, even in salt water, so maintenance can be kept to a minimum. In use, the fire-fighting power of the Pemex 652 is controlled from the bridge, which also contains the latest in navigation equipment, Proved Engineering and Dependability stand behind the world's finest shipboard windows, windshield wipers and doors by... Sliding Window Crank-Operated Window * Window Wiper and Fixed Window Kearfott products are quality constructed to meet requirements of A.B.S., U.S.C.G. and Navy standards. Kearfott windows and doors can be man- ufactured in various sizes, shapes and materials. Catalog showing complete line of marine products furnished upon request. Weathertight Door De-icing, Heated Window Hinged Portlight Clear View Screen Kearfott a division of The SI N C E R Company 550 S. Fulton Ave., Mount Vernon, N.Y. 10550 Phone 914-664-6033 Telex 133440 Circle 134 on Reader Service Card JIL JIM'S PUMP REPAIR INC. fe ^INCORPORATED 48-55 36th STREET, LONG ISLAND CITY, NEW YORK 11101 JIM LAGONIKOS, President Established 1974 Bob Mooney, Sales & Service Mgr. Reconditioned Coffin & Pacific Feed Pumps Service A-1 Condition Parts Available 24HRS TYPE* F-CG - DE - DEB - IND - T TLX-TWX 212-392-4444 TBA • 12 -16 - I6V2 710-5824847JPRNYK SERVICE - GULF AND WEST COAST 24 Hrs. Service VI-CORE INC. - Ivo Dabelic 713-643-7715 radiotelephone, depth sounder, ra- dar, loudhailer, engine controls, and hydraulic steering controls. Schottel bow and stern thrusters enable the vessel to maneuver with ease. This permits precise station-keeping and allows the fire- fighting equipment to be posi- tioned quickly and to the best advantage. PEMEX 652 Major Suppliers Main engines (2) MTU Reduction gears (2) Reintjes Propellers (2) Osborne Engine controls Kobelt Pumping engines (2) MTU Generator sets (2) Caterpillar Thrusters (2) Schottel Steering gear Wagner Cranes & davits Kingsway Anchor windlasses . . . Harrison & Robbins Pumps Jabsco, Paramount Rotoking, Worthington Internal fire-fighting (Halon) .... Svenska Inflatable rafts Beaufort Radar, echosounder, gyrocompass .Sperry VHF & SSB Canadian Marconi Fenders Seaward Coatings International Paint ROWAN GORILLA I Marathon LeTourneau The Rowan Gorilla I, largest off- shore jackup drilling rig ever built, was delivered in December 1983 by Marathon LeTourneau to Ro- wan Companies, Inc. of Houston. Designed by Marathon and built at its Marine Division in Vicks- burg, Miss., it is the first of the new Gorilla Class jackup designed for operating in hostile offshore areas. Because of restrictive bridge clearances, the rig was towed from Vicksburg to Belle Chasse, La., minus its full length of legs and its drilling derrick. After final out- fitting the rig left Belle Chasse under tow of the Chignecto Bay and the Mahome Bay (photo), 11,000-bhp vessels that will serve the rig as both tugs and supply vessels. The Rowan Gorilla I is sched- uled to begin its first drilling as- signment offshore eastern Canada in mid-January for a consortium of Canada-based oil companies in- cluding ATS Exploration Ltd., Bow Valley Industries, Ltd., and Husky Oil Operations Ltd. Fully outfitted with its three (continued on page 46) 12 Circle 109 on Reader Service Card Maritime Reporter/Engineering News
