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WORKBOAT ANNUAL (Continued from page 30) Thruster design which operates in compass as well as tunnel thruster modes. The Z-drives will each be driven by a Caterpillar 3512 high- speed diesels rated for 1,210 hp at 1,600 rpm. The stern-mounted Z- drives are installed with hull mounting modules designed and built by Ulstein. The units feature open fixed pitch propellers of 1,829 mm diameter optimized for opera- tion at an estimated vessel service speed of 12 knots. Also fitted are multi-plate hydraulic clutches and Ulstein's new Z-drive steering pump PTO drive. Ulstein Maritime has delivered two model 1650H Z-drive thrusters to tug Namahoe, operating in the Hawaiian Islands. Owned by Smith Maritime, the tug is used for inter-island towing and ship assist. Namahoe's propulsion system consists of two Ulstein 1650H Z- drive thrusters with 86 in. fixed TECHNICALLY SUPERIOR PRACTICALLY UNBEATABLE TLM MARINE1 The number one bearing choice for new-build and repair proven to deliver superior performance in the most demanding operating conditions • Engineered for life • Outstanding strength • Fast delivery - fast fitting • Time and cost saving • Approved by Classification Societies • Worldwide distribution network • Inventory held in all major shipbuilding centers Orkot Composites Orkot Inc. 2535 Prairie Road Eugene, Oregon 97402 USA Tel: (541)688-5529 Fax: (541)688-2079 Toll Free: 1-800-546-7568 Orkot Limited UK Tel: 44+(0)1709 376044 Fax: 44+(0)1709 374819 Members of the Busak + Shamban Group Circle 315 on Reader Service Card 32 i\ YOUR TOUGHEST JOB. CHAIN PATTERN ANCHOR PATTERN MARQUIP marine towing shackles can handle it. SWL 32-185 TONS O Maxium load capacities and safety e High-strength alloy steel construction Q Easy installation Towing plates, too, plus many more products from one of the largest inven- tories of marine equipment in the USA. CUSTOMER SERVICE 24 HOURS A DAY, 7 DAYS A WEEK 5 1-800-851-3429 WASHINGTON CHAIN AND SUPPLY, INC. P.O. Box 3645 • 2901 Utah Avenue South • Seattle, Washington 98124 FAX (206) 621-9834 • E-mail: info@wachain.com VISIT OUR WEB SITE FOR MORE INFORMATION: www.wachain.com Circle 368 on Reader Service Card RTF Manufacturing RD #1, Route 66 Hudson, N.Y. 12534 MARINE REFRIGERATION " When Reliability Matters " "UNDERCOUNTER" REFRIGERATORS & FREEZERS •MARINE TOUGH •BUILTTO RIGID MILITARY SPECIFICATION MIL-R-21098E • OZONE SAFE REFRIGERANT • HEAVY DUTY REFRIGERATION SYSTEMS MODEL: NAV-10-LT-CT TYPE II, STYLE 2, SIZE 10 NSN: 4110-01-378-5439 ... MANY STOCK MODELS TO CHOOSE FROM Tel: (518) 828-2180 • Fax: (518) 828-2257 1-800-836-0744 Circle 328 on Reader Service Card pitch propellers moderating skew for smooth operation and high thrust in bollard condition. The propellers were designed by Nautican Research and manufac- tured by Finnscrew. The 1650H model is the first of Ulstein's new modularization arrangement. According to the company, the goal of this arrange- ment is to drive systems, reduce installation complexity and cost and simplify maintenance. A key feature of this concept is that the main steering pump is gear-driven by the Z-Drive upper gearbox, per- mitting the steering control sys- tem to be mounted on the drive with no components located else- where on the vessel. Namahoe's 1650H features an upper gearbox reduction ratio of 2.7 and a lower gearbox ratio of 2.1, reducing the 1,600 rpm input to a speed of 291 rpm. The 1650 has a maximum rating of 2,400 hp and can accept any input speed from 700 to 2,100 rpm. The vessel also features Ulstein's Z-Con elec- tronic remote propulsion control system, an electronic analogue control which reportedly exceeds ABS, Lloyd's Register and all other class society requirements. For more information on Ulstein Circle 44 on Reader Service Card Deere Delivers Diesel Line Deere Power Systems Group offers five marine diesel engines in 3.9, 4.5, 6.8 and 7.6 L configura- tions, with horsepower ratings from 71 to 300 for propulsion applications. Multiple horsepower ratings are available for each engine. ABS certification is avail- able as an option for engines at a rating of 250 hp. For more information on Deere Circle 26 on Reader Service Card Newpark Aquires Platzer, Forms Greens Bayou The majority shareholders and management of Newpark Shipbuilding and Repair, Inc. have acquired certain assets of Platzer Shipyard, Inc. The new company
