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Vessels pull of the fore winch is 10 tons at 20 m/min., or 20 tons at 10 m/min. The aft winch can store 200 m synthetic rope of 80 mm diameter and has a pull and speed of 10 tons at 20 m/min or 20 tons at 10 m/min. The ropes used on the fore and aft winch run through stain- less steel triangular fairleads integrated in the towing bitt. On the aft deck a Kraaijeveld capstan of 3.5 ton pull is arranged, and a Mampaey towing hook of 65 ton Safe Working Load is fitted. Azimuth Stern Drive Tug 2411 The Damen Azimuth Stern Drive Tug 2411 (yard number 512201) is current- ly being built in China and is expected to be ready for delivery in October 2003. The ASD 2411 is the newest product of the Damen ASD series and is a typical harbor tug with designed to provide excellent maneuverability and impressive bollard pull. The vessel's hull shape and appendages were final- ized after a successful series of model tests at the MARIN test basin facilities in The Netherlands. It, too, complies with the stability criteria of U.S. Coast Guard. The classification society for this vessel is Lloyd's Register of Shipping. Two sixteen-cylinder Caterpillar 3516B TA HD engines power the ASD 2411. The output of each main engine is 4,170 kW (5,592 bhp) at 1,600 rpm. These engines drive the Aquamaster US 255 thrusters, with fixed pitch pro- pellers. Between the main engines and the thrusters, slipping clutches are fit- ted, make Twin Disc, type MCD-LD. By means of these slipping clutches, the propeller speed can be controlled very accurately when main engines run at idle rpm. The thrusters have a pro- peller diameter of 2600 mm. The noz- zles are with stainless steel inner ring. The ASD 2411 is fitted with two Caterpillar auxiliary engines, driving 106 kVA Caterpillar SR4 generators. The ASD Tug 2411 is equipped with a SIHI fire-fighting pump of 600 m3/hr at 10 bar, driven by a Caterpillar 3306B engine. In front of the deckhouse a manually controlled Ajax fire-fighting monitor is fitted, with a capacity of 600 cu. m./hr. A venturi type foam-mixer is installed at the pump, up to a maximum of six- percent. Furthermore, an electrically submersible driven salvage pump is delivered. Circle 30 on Reader Service Card i & H M ASD Tug 2S10 \ I - - -= fill Viking Enhanced Softloop Fender JANET M. MCALLISTER rttltlf (HfifftUlitaii, ' When Push Comes To Shove, Have A Viking On Your Side! < The softest, most forgiving ship assist fender on the market • Designed for greater energy absorption and gripping ability > Ideal for tractor tugs, bow, stern and side fenders • Side hip fenders for tug and barge units • Pier cell fenders flfflf? a division of Viking Marine Products, Inc. 1160 State Street • Perth Amboy, NJ 08861 USA Tel: (732) 826-4552 fax (732) 826-5533 www.vikingfender.com X^hmniTHHUSTER Murine Maneuvering and Propulsion Systems PATENTED SYSTEM . Kinetic Converter takes input shaft energy and produces usable hydraulic energy by the use of a mixed flow impeller. J . Steering Vanes continu- ously meter or proportion a percentage of the fluid flow to one or both sides of the vessel. • Nozzles accelerate the mass of water creating a thrust force at the hull interface. . Thrust Directors (optional) deflect the water flow forward or aft producing slow speed auxiliary propulsion. . Electronic Control System controls the 360° thrust vector resultant from a fixed or variable speed prime mover rotating continuously in one direction. . There are no rotating parts that have to be stopped or started as thrust direction and/or magnitude changes. liCI-niCAL 3EADOUU ^Mixed-Flow Impeller lit 1 \ I if •fc • * * * *'*•» — t < I i -jlr-j jS : Circle 287 on Reader Service Card K * 30555 Salon Industrial Parkway • Cleveland, OH 44133 443 5423233 www.omnlthruster.com Circle 252 on Reader Service Card February 2003 51