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SUPERAHERICA ASHLAND OIL INC OUTSTANDING WORKBOATS OF 1988 This special review highlights some of the most notable and im- portant workboats delivered by U.S. boatyards during the past year. Each selection in this award- winning group features its own dis- tinctive stamp of performance ex- cellence and fine craftmanship. AARON MCCALL Gulf Craft Gulf Craft, Inc., Patterson, La., delivered the world's second largest crewboat, the Aaron McCall during 1988. The 155-foot, 84-passenger crew- boat, the sister boat of the Blair McCall, which was delivered last year, was built for McCall Enter- prises of Cameron, La. Unlike her sister, the Blair McCall, which is equipped with five Cummins engines, the Aaron McCall is powered by six Cummins KT 1150M diesel engines coupled with Twin Disc MG-518 2.5:1 ratio reduction gears. Each engine pro- duces 680 shp at 2,100 rpm. The Aaron McCall's propulsion equip- ment also includes Aquamet stain- less steel shafts and Columbian Bro- nze four-bladed 40-inch by 36-inch propellers. Electrical power aboard the Aa- ron McCall is provided by two 50- Photos (clockwise from top left): U.S. Enter- prise (Halter Marine), Sajo Victoria (Camp- bell Shipyard), SuperAmerica (Quality Ship- yards), and the Seattle Enterprise (Bender Shipbuilding & Repair). AARON MCCALL Equipment List Main engines (6) Cummins Reduction gears Twin Disc Propellers Columbian Shafts Aquamet Generators KATO Generator engines .... Detroit Diesel Steering Charlynn Orbitrol Engine room blowers . . . Cincinnati Fan Keel coolers Split Pipe Fuel meter Daniel Stuffing boxes Gulf Craft Radar Furuno Loran Raytheon SSB Stephens Engineering VHF Raytheo Depth sounder Date Marine Compass DAIKO Autopilot Comnav Marine Horns Buell Searchlights Carlisle & Finch Running/navigation lights Perko Freshwater pressure set Sears Fire pump Berkley F/O transfer pump Roper F/O transfer meter Tokheim Oil transfer pump Wilden Pump Bilge pump Peabody Barnes Fire pump Berkeley Hydraulic pump Hydreco Sewage pump Peabody Barnes A/C Carrier Heating Carrie Air compressors Quincy Winch Tulsa Winch Anchor winch McElroy Machine Lifesaving gear Billy Pugh Life rafts Billy Pugh kw KATO generators driven by De- troit Diesel model 4-71 diesel en- gines. The main engines were sup- plied by Cummins Mid-South and the generator package was supplied by Kennedy Engine. Besides a 180-long-deck-ton ca- pacity, the aluminum crewboat fea- tures the comforts of luxury accom- modations for both the crew and passengers. All interior living com- partments are air conditioned and heated by means of a water-cooled Carrier unit. Three staterooms pro- vide sleeping accommodations for six crew members, while both pas- senger compartments yield seating for a total of 84 passengers. The aft steering station, which is located just atop and behind the pilothouse, provides the captain with 360-degree visibility and ef- fortless handling when unloading and loading supplies. All six Cum- mins engines are also controlled via the aft steering station by way of the Kobelt air controls. A Raytheon VHF radio and a Realistic P/A sys- tem, as well as the oil company's pri- vate radio in the aft steering station provide communications between the captain and platform and deck crews. The Aaron McCall's pilothouse is fitted with a complete set of elec- tronics. It features two Furuno ra- dars, two Raytheon loran plotters, a Comnav autopilot, a Raytheon VHF radio, a Stephens single side band radio and a Datamarine depth re- corder. GUIA/LIDER Houma Fabricators In the first quarter of this year, Houma Fabricators delivered the tractor tugs Guia and Lider to the Panama Canal Commission. The sister vessels both have Voith- Schneider cycloidal propulsion sys- tems which feature 360-degree thrust for outstanding maneuvera- bility. The tugs are used to assist and tow ships through the narrow Panama Canal and locks. The 95-foot tractor tugs are pow- ered by two 1,500-hp EMD diesel engines that generate a bollard pull of 85,000 pounds. The tractor tug concept is enhanced by 58,000 pounds of side pull which allow the Guia and Lider to hip up to a ship and maneuver it into tight places that prove to be troublesome to con- ventional tugs. The delivery of the Guia and Lid- er brings the number of vessels recently delivered by Houma Fabri- cators to the Panama Canal Com- mission to five. The 3,000-hp twin- screw harbor tug Esperanza was de- livered in 1985, while the 3,000-hp Chagres was outfitted as a dredge tender and delivered in June 1987. In addition, a 130-foot salvage- diving barge complete with machine shop, salvage crane and decompres- sion chamber was delivered in Sep- tember 1988. Houma Fabricators was recently awarded a contract by the Panama Canal Commission to build another tractor tug identical to the Guia and Lider. The contract contains an op- tion for a sister vessel. The Commis- GUIA/LIDER Equipment List Main engines EMD Cycloidal propellers . . . Voith-Schneider Gearbox Voith-Schneide Generator engine GM-Kennedy Generators Delco Engine controls Wabc Radar Raytheon Compass Cassen & Plath Loudhailer Raytheon Fire pump engine GM-Kennedy Fire monitors Skum Fire pump Aroura Hawser winch Markey Capstan Marke Hydraulic controls Markey Hydraulic engine GM-Kenned Air compressor Quincy A/C Carrier/Johnson Bros. Main engine coolers Fernstrum Sewage treatment ORCA II 62 Maritime Reporter/Engineering News