OSD develops new series of multipurpose tractor tugs

Shipbuilding and Shipyards, Technical, Technology — By on February 9, 2016 at 7:56 PM

Cyclotrac_AzitracNetherlands-based OSD (Offshore Ship Designers) has designed a new series of high-performance tractor tugs which can be used for a wide range of functions, including escort operations, harbour towage, ship handling, offshore mooring and berthing.

The basic model tug has a LOA of 33 metres and a beam of 13.5 metres, but the tug design can be tailored to various sizes.  The high forecastle deck ensures good sea-keeping performance. The hull is shaped with side wings to reduce drag, enhance stability and to improve roll-damping. This makes the vessels perfectly suited for offshore towing and salvage.

The wheelhouse design gives an excellent overview of the work-deck during escort operations and optimum visibility over the bow during transit modes.

A broad tow-staple on the aft-deck reduces moment of inclination caused by tension on the wire, while the spacious aft-deck itself accommodates the towing winch. The aft bulwark structure is outfitted with an integrated tow-pin arrangement. A knuckle-boom crane is outfitted with outreach over the aft-deck area.

The tugs can be fitted with either Voith Sneider cycloidal propellers (the Cyclotrac 3270 model) or azimuthing thrusters (the Azitrac 3270 design). The propulsion drive configuration can be adapted to client specification – diesel-electric, hybrid with or without batteries etc. Depending on engine and propulsion configuration, a bollard pull of 90 tonnes can be achieved.

OSD’s MLC-compliant tugs can be delivered with a FiFi1 class notation. They have accommodation for 8 to 12 persons, with individual sanitation facilities.

Offshore Ship Designers Group (OSD) is a global one-stop resource delivering naval architecture and marine engineering skills to the shipping and offshore energy industries. It draws on an experienced global workforce to provide high-quality feasibility studies, conceptual and detailed designs for tugs and offshore support vessels of all types. OSD is based in IJmuiden, The Netherlands, and has offices in Dundee, York, Appledore, Shanghai and Singapore.www.offshoreshipdesigners.com

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