Ship Handling in Unprotected Waters: A Review of New Technologies in Escort Tugs to Improve Safety

It is a well-known fact that the 1989 Exxon Valdez disaster caused the escort towing of laden tankers in many coastal areas of the world to become compulsory. In order to implement a new type of escort towing, specially designed to be employed in very adverse weather conditions, considerable changes...

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Bibliographic Details
Published in:Applied Mechanics 2021-03, Vol.2 (1), p.46-62
Main Authors: Iglesias-Baniela, Santiago, Vinagre-Ríos, Juan, Pérez-Canosa, José M.
Format: Article
Language:English
Subjects:
dynamic escort tug winch
escort tug towline
Methods
towing equipment
tug technology development
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Summary:It is a well-known fact that the 1989 Exxon Valdez disaster caused the escort towing of laden tankers in many coastal areas of the world to become compulsory. In order to implement a new type of escort towing, specially designed to be employed in very adverse weather conditions, considerable changes in the hull form of escort tugs had to be made to improve their stability and performance. Since traditional winch and ropes technologies were only effective in calm waters, tugs had to be fitted with new devices. These improvements allowed the remodeled tugs to counterbalance the strong forces generated by the maneuvers in open waters. The aim of this paper is to perform a comprehensive literature review of the new high-performance automatic dynamic winches. Furthermore, a thorough analysis of the best available technologies regarding towline, essential to properly exploit the new winches, will be carried out. Through this review, the way in which the escort towing industry has faced this technological challenge is shown.
ISSN:2673-3161
2673-3161
DOI:10.3390/applmech2010004