Paper No. D18 Mulder 1 of 16 Improving the Performance of Shallow Draft Tugs in Northern Canada
Northern Transportation Company Limited, the primary provider of marine transportation services on the Mackenzie River system in Northern Canada, has embarked on a major refit program of their extremely shallow draft river and coastal tugs. The refit program of the company's 11 tugs operating i...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.578.1429 http://legacy.sname.org/sections/pacific_northwest/images/Shallow Draft Tugs SNAME 2006 D18 FINAL Rev. 4.pdf |
| Summary: | Northern Transportation Company Limited, the primary provider of marine transportation services on the Mackenzie River system in Northern Canada, has embarked on a major refit program of their extremely shallow draft river and coastal tugs. The refit program of the company's 11 tugs operating in the Western Arctic region began in 2001 and continues today. The primary goal of the program has been to extend the life of the vessels and improve their performance by incorporating tested features learned through many years of operational experience while also introducing new technology. Severe operating conditions and shallow draft design constraints provide considerable challenges for the design of the vessels ' tunnel stern hull form, pro-pulsion system, and steering system. The performance improvements have been recorded through tests and trials as well as by the analysis of operational results after the completion of vessel modifications. Full-scale trial results of the maneuverability and bollard pull characteristics add to the understanding of these unique vessels. |
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