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Propulsion Update Aquamaster-Rauma To Deliver Second Set Of Azimuthing Thrusters For Finnish Icebreaker Program Aquamaster-Rauma, of Rauma, Finland, one of the world's leading manufacturers of propulsion units, has received a second order from the Finnish Board of Navigation for the company's largest set of Aquamaster azimuthing thrusters, to be deliv- ered in June 1993 to Finnyards' ship- yard. The new azimuthing thrust- ers will be fitted onboard the second multipurpose government ice- breaker being built by Finnyards and scheduled for delivery in early 1994. The first Finnish icebreaker in the class, ordered last October, also received a set of Aquamaster azimuthing thrusters. The thrusters are based on a new construction, type ARC 1, which has been developed specifically for ice- breakers. The thrusters, like the vessel itself, will meet the Det norske Veritas "Icebreaker Polar 10" ice class standards, and have been di- mensioned to operate in ice more than 5.9 feet thick. Both of the icebreaker's thrusters are rated at 7.5 MW and will be able to absorb over 2 x 15,000 hp in open water. The thrusters are equipped with fixed pitch 4.2-meter (13.8-foot) diameter propellers mounted in nozzles. The thrusters generate a steerable thrust force that acceler- ates the vessel forward, astern and sideways. This allows the thrust force to be used for icebreaking, roll- ing the ship or cleaning and widen- ing the channel. The vessels will operate in winter as icebreakers and in the open wa- ter season on various tasks, such as laying cables, anchor handling and towing. The Aquamaster azimuthing thrusters will give each icebreaker a 196-long ton bollard pull. Having invested heavily in im- proving the reliability, performance and versatility of steerable propul- sion units, the development and manufacture of the two giant azimuthing thrusters has given Aquamaster-Rauma the opportunity to show that units of this kind can safely be used in high power ranges and tough ice conditions. Aquamaster-Rauma also manu- factures Rauma deck machinery and Unex ship's boilers and waste water treatment plants. The 7.5-MW, Aquamaster US ARC 1 azimuthing thruster. For free literature describing units or other extensive product line, Aquamaster-Rauma's propulsion Circle 43 on Reader Service Card SERVICE Is Our Name Dry Docking Gas Freeing Repair Conversion Construction y Stop at MP 87 on Intracoastal Waterway for quality repair service on workboats, tugs and barges. With 25 years' experience, you can count on us for dependable 24-hour service. Two drydocks (largest dock lifts, 2100 short tons, 60-foot beam and 16-foot draft over keel blocks) and 3200-foot waterfront for dockside repairs. GaSs freeing for repairing LPG and fuel barges. Service Marine Industries, Inc. P.O. Box 3606 End of Ford's Industrial Road Morgan City, LA 70381 Amelia, LA 70340 Phone: (504)631-0511 Fax: (504) 631-0046 22 Circle 236 on Reader Service Card Maritime Reporter/Engineering News
