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. KGW steering gear or Security and Precise anoeuvring sring gear built by KGW srporates well-proven Iro-mechanical and electro- modular systems, ffers maximum flexibility installation in all types of P- JW steering gear is avail- le in two- and four-cylinder nfiguration, with separate sctro-hydraulic power units • rudder torques of up to OOOkNm. ur steering gear is in accor- ince with international Clas- ication requirements and s latest SOLAS provisions. IEUROPORT Hall 1/1/ • Stand 2271 5CHWERINER WASCHINENBAU GMBH We offer the most modern shipborne equipment. Manufactured are: Cranes Mooring-winches Anchor-winches Capstans Steering Gears Special winches/several types Fishing-Technology: Trawl winches Seiner- and Net winches Cable winches Cranes and all winches for fishing For detailed information, please contact: Wismarsche Strasse 380 19055 Schwerin • Germany Telephone 0385/57 21 -0 Telefax Telex 0385/81 20 38 39 11 89 Circle 250 on Reader Service Card One of two lagoon service vessels delivered by Marathon Marine to Grande Prairie, Alberta. Marathon Marine Delivers Hatfield- Designed Lagoon Service Vessels Marathon Marine Manufacturing Ltd. of Edmonton, Alberta delivered two aeration la- goon service vessels to Weyerhaeuser Canada Ltd. pulp mills in Grande Prairie, Alberta and Prince Albert, Saskatchewan. The vessels measure 36 feet long, with 18- foot beams, three-foot depths of pontoons and four-foot depths of main hull, and are of all welded aluminum construction. The hull is of "tuning fork" configuration to enable nestling of the large aeration pump floats between the pontoon hulls forward for pump and motor servicing. The floats which support the pumps and associated motors are arrayed across the surface of the lagoons and individually anchored by four lines to the bottom, requiring a high degree of maneuverability of the service vessels to enable them to effectively perform their work. Hinged and removable grating decks are fitted between the hulls for worker safety while ser- vicing the aeration pumps and motors. A 3,000- lb. capacity deck crane is provided for lifting of the grating sections and for general lifting capa- bility over the forward working area. The vessels are also fitted with mounts forward of the deckhouse to take large electric power cable reels used when laying and servicing the net- work of cables which are spread across the floor of the lagoon and connected to individual pump float motors. Additional work to be carried out by the vessels includes regular sampling of the effluent water quality and the positioning of flow control barriers within the lagoons. Propulsion and steering is provided for each vessel by a 235-hp, 2,900-rpm continuous rated Star Power 444 TD/260 Marine Diesel engine, keel cooled, with ZF MPMIRM 501 direct ratio reverse gear driving a Kodiak 403 Waterjet Propulsion Unit. A fully enclosed steering/ control deckhouse is located on the after deck with access to the machinery compartment be- low. As well as providing the usual space for the stowage of tools and spare parts necessary for the work that is to be carried out, the deckhouse provides shelter and a place for operators to warm up when working on the lagoon in winter sub-zero temperatures. The service vessels were designed by Peter S. Hatfield Ltd., Naval Architects, Marine Engineers and Marine Con- sultants of Vancouver, B.C., which worked close- ly with Greg Lancaster of Weyerhaeuser in Grande Prairie, Alberta to develop the basic performance characteristics required. For more information on Marathon Marine , Circle 1 on Reader Service Card For more information on Peter S. Hatfield, Circle 2 on Reader Service Card One of the 26 USCG 82-foot patrol boats re-engined with Caterpillar V-12 diesels. Ocean Technical Services Completes USCG Patrol Boat Re-Engine Project A major engine changeout project, systems refurbishment and shell plate renewal was com- pleted by Ocean Technical Services, Inc. (OTECH) on 26 East- and Gulf Coast-based 82- foot U.S. Coast Guard (USCG) WPBs (patrol boats). Beginning in October, 1991, this repow- ering project consisted of replacing the existing Cummins engines with new Caterpillar V-12 800-hp diesels. The cutters were refitted four at a time with the entire project being completed eight months ahead of schedule. There was a lot more to the project than changing out the engines. The entire drive train was rebuilt using the original base-line plans for the cutters. It was repositioned from the engine to the propellers. New foundations, engine beds, propulsion shafts, bushings and bearings were installed. Existing propellers were rebuilt to the correct diameter, realigned and repitched. Repiping, reinstallation of elec- trical fitting and the exhaust system were also completed. The cost to the USCG for this project averaged $150,000 per cutter, not including the cost of each new engine. For more information on OTECH, Circle 6 on Reader Service Card SeaArk Delivers New USCG Boats SeaArk Marine delivered six 21-foot welded aluminum patrol boats to the U.S. Coast Guard (USCG). The boats, which are SeaArk's "Com- mander" series, will be used by Marine Safety Units of the USCG throughout the Central U.S. This was the second order of similar sized ves- sels delivered to the USCG by SeaArk. Last December, SeaArk delivered eight 21-footers built to meet specific job applications. The USCG will use its trailerable boats for port safety and security, oil spill response, environ- mental monitoring and rescue missions. With its enclosed cabin, the boats are capable of year- round operations. The new boats have deep-V hulls and are noted for their smooth ride in choppy waters and excellent handling at higher speeds. Powered with twin 100-hp commercial motors and weighing 4,000 lbs. each, the "Com- manders" exceeded 32 knots during builder's trials and were able to plane at 18 knots on a single engine.For more information on SeaArk Marine, Circle 3 on Reader Service Card November, 1993 25 One of six patrol boats delivered by SeaArk Marine to the USCG. 25
