News: New ASD Ship-Handling Tug Designed by Robert Allan

Monday, July 07, 2003

In December 2002, the high performance tug Altug was completed by Uzmar-Uzmanlar Shipping and Trading Company Ltd. of Izmir, Turkey. This tug is the first of the new ASD 32/80 Class design developed by Robert Allan Ltd., of Vancouver, BC. It was built under direction of the Owners at the Ge-Ta Shipyard Particulars of the new ASD 32/80 Class tug.

The propulsion system comprises a pair of Deutz Model SBV 8M 628 diesel engines, each rated 1,750 kW at 1,000 rpm, driving Schottel SRP 1212 Z-drives through a system of Cardan shafting. This combination delivers a Bollard Pull of approximately 56 tons, and provides a full-load free running speed of 13.5 knots. The design is also configured to take higher power, capable of supporting a BP of approximately 80 tons.

Two skeg design options are also offered, one more or less conventional, and a deeper "escort skeg" if a higher indirect towing capability is required. All main and auxiliary machinery is cooled using Bloksma Electrical power is provided by a pair of Cummins, 6 CTA 8.3 diesel gen-sets, each rated 136 kW at 1,500

The deck machinery comprises a combination hydraulic hawser winch/windlass forward, with 35 ton line pull and 100 ton brake, and a hydraulic powered towing winch on the aft deck, rated 35 ton line pull and 100 ton brake, all supplied by Kraajeveld. The tug has open bulwarks aft for towing, and could be retro-fitted with a stern roller for anchor-handling operations. The tug is also equipped with a fire-fighting capability, provided by two main engine-driven Unitor SFP 250 x 350 fire pumps, each rated 25,500 Lpm at 15 bar. Two Unitor Model FJF-200 EL remote-controlled monitors are mounted on the mast platformabove the wheelhouse.

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