The Northstar man-made island has been on stream for some years (since 2001) already and experienced more frequent and severe storm conditions than initially expected. As a result, its armor slope protection systems required annual maintenance. To study the possibility to improve the durability of the island BP launched a testing programme to compare two different enhanced slope protection systems. In September 2008 altogether three weeks of testing in ice in various ice conditions and island configurations were performed at the Aker Arctic Technology model basin. The tests were quite complicated and time consuming. The paper discusses the test set-up, tests performed and learnings.

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