Eating is the only way to know the pie is good, and it's the same with ice-going ships. Only operations in ice will show the true ice capability of a vessel.In ships designed for open-ocean transit, sea trials are usually conducted to verify contractual requirements and to collect performance data, such as ship maneuvering characteristics, which will be used in operating the vessel. Conducting such tests is routine and SNAME, in fact, has issued a T&R bulletin on how to carry out such trials.
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