Author(s): Per F. Andersen; Norman F. B. Allyn
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Keywords: No Keywords
Abstract: An ice management technique has been developed for maintaining winter access to ice bound harbours which employs stationary wave machines and icebreaking service tugs. Specifically, the proposed ice management method identifies a practical solution to the major problem of docking large ships in an enclosed harbour, which could otherwise be inhibited by ice buildup. The wave machines would be installed at the back of the harbour enclosure, facing the harbour entrance. At suitable time intervals, machine-made wave action will be employed to break-up static ice formation in the harbour and transport the broken ice seawards for disposal into the moving ice outside the harbour. Service tugs will provide ice clearing outside the harbour, if required, and will assist at dockings. The orientation of the harbour and its entrance gap will be based on directional ice drift, wave and wind statistics so as to minimize ice problems outside the harbour entrance and facilitate the disposal of the harbour ice. Ice breaking and ice transportation by wave action have been studied in field and tank tests. By applying the results of these tests and using recently developed machinery, the ice management technique is proposed as a practical and safe method of maintaining year round operations in an oil production harbour in the Beaufort Sea. In addition, conventional berthing procedures, dock fenders and wharf structures can be used with this scheme.
Year: 1984