Effect of ice drift angle on a mooring hawser

• Main Authors: Spencer, D., Jones, S. J., Jolles, W.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 1997
• Subjects: Arctic
• Online Access: https://nrc-publications.canada.ca/eng/view/object/?id=17f2cf0b-3ef2-4b8b-a25d-f2edf13bb485; https://nrc-publications.canada.ca/fra/voir/objet/?id=17f2cf0b-3ef2-4b8b-a25d-f2edf13bb485

The effect of ice drift angle on a mooring hawser was investigated in a series of model tests, with a tanker moored to an off-loading terminal in moving pack ice. The experiments measured the tension in the mooring system as the ice drift direction changed. Three sizes of pack ice were investigated; small floes, large floes, and very large floes and ice management techniques were investigated to reduce the loading. A special x-y towing frame towed the structure model in in complex manoeuvre simulating the movement of the ice. Two test scenarios were conducted; in the first the ice drift angle slowly changed as it passed by the model, in the second the angle was abruptly changed. Results show the effect of various parameters on the mooring line tension, and a brief discussion of the applicable scaling laws is presented. Peer reviewed: Yes NRC publication: Yes