Oceangoing Towing Guidelines Issued By Det Norske Veritas

Det norske Veritas has recently issued the publication "Guidelines and Requirements for Towing Declarations." The increasing number of towing operations now taking place necessitates such guidelines, which are the first of their kind.

The publication lays down the requirements for the towed object, towing vessel, towing arrangement and equipment, and communications systems, which have to be met to obtain a towing declaration.

Traditionally, only a few companies have carried out oceangoing towing operations, and evaluations of the strength and equipment of towing vessels as well as towing arrangements, etc., have to a large extent been based on experience.

In recent years, towing activities have expanded rapidly, especially in connection with offshore installations, and the towing distances have increased, while towing vessels of today also differ from the traditional tugs in design and towing capacity.

Furthermore, the towed objects are more varied than before in size and shape, and towing of such units as drilling rigs, platform foundations, pipelines and ship sections, as well as transportation by lighter of large modules and sections have become commonplace.

These towed objects represent large sums of money, so that both operators and insurance companies have a need for a thorough evaluation of the whole operation before the actual towing starts.

Det norske Veritas, through its section for Maritime Advisory Services (MAS), disposes of the necessary m a r i t i m e experience and know-how to carry out such an evaluation reliably.

By means of the new guidelines, the owners and other interested parties will be informed in advance of the requirements, and based on these requirements be able to improve the planning and execution of the whole towing operation.

Maritime Reporter Magazine, page 28, Dec 1977

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