Page 4th Cover: of Maritime Reporter Magazine (February 2003)

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 &

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ASD Tug 2S10 \ I - - -= fill

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Circle 287 on Reader Service Card

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Circle 252 on Reader Service Card

February 2003 51