Page 15: of Maritime Reporter Magazine (February 2004)

News

Damen Delivers First-of-Class ASD Tug

The recently developed Damen ASD

Tug 2411 is a real push-pull ASD Tug. designed primarily for working over the bow. This tug is a powerful 4.200 kW vessel that develops a bollard pull of around 70.000 kg; full ahead to full astern in a ship's length, turning around in 10 seconds.

With the introduction of the Damen

ASD Tug 2411. Damen Shipyards has put a new type of port tug on the market: very compact, with an enormous bollard pull. The prototype of this boat (yard number 512201) was built at Damen

Shipyards Changde in China for stock and as a demonstration model, but before delivery the boat was sold to an

Australian shipping company and named Barunga. The delivery to

Adsteam Towage Pty Limited in Bondi

Junction, New South Wales, took place on January 23. and Barunga is now based in Port Adelaide.

The Design "What we need is a small ASD Tug but with the power of the ASD Tug 3111; we had a length of around 22 m in mind.

Make some suggestions."

This was more or less the question the

Damen Sales team put to the Tugs &

Workboats Product Group almost three years ago. It was a new product, at least for Damen. Initial sketches showed a wide, short and low. with a very big approach angle to enable it to creep as far under a ship as possible, and with virtually no accommodation and an excellent view all round.

The company had long meetings and made many changes. And the boat grew.

That's how it happens with Damen

Standard designs. It's always about the customer and what for what use they need a Standard Damen product.

The need for a new type of vessel was the result of developments in the market.

Competition for port tug work is usually stiff, which led to an increasing demand for vessels that were lower cost but still packed a considerable bollard pull.

The Damen ASD Tug 2411 design based on this program of requirements has the following main specifications and trial results of yard no. 512201

Barunga:

Length, o.a 80.4 ft. (24.5 m)

Length, molded 7S.7 ft. (24 ml

Length, w.l 71.5 ft. (21.8 m)

Beam, o.a 37.7 ft. (11.5 ml

Beam, molded 35.1 ft. (10.7 ml

Depth 15.1 ft. 14.(i m)

Draft hull ] 1.5 ft. (3.5 m)

Draft aft 17.7 ft. (5.4 m)

Displacement W tons

GT 25(1

Speed ahead 12.8 knots

Speed astern 12.7 knots

Bollard pull ahead 68 tons

Bollard pull astern 3 tons

The beam dimension was chosen to comply with the U.S. Coast Guard requirements for ASD Tug stability (among the most stringent in the market) and this makes the boat relatively wide.

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