rough sea

neklidné moře

 The yacht was unable to make any headway five miles south west of Black Head and the Coastguard reported the weather conditions in the area as poor, with strong winds and a rough sea. BNC

Then one wild, dark night with a rough sea, he disappeared and was seen no more. BNC

Unfortunately, the London's pilot was fatally wounded, but his co-pilot managed to alight in a very rough sea. BNC

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