A clean breach

implies that everything on deck is swept away.
- Ham. Nav. Encyc.

See also: Breach

References in classic literature ?
But a great cry, which was audible even above the wind and water, rose from the shore at this moment; the sea, sweeping over the rolling wreck, made a clean breach, and carried men, spars, casks, planks, bulwarks, heaps of such toys, into the boiling surge.
This was the highest spot of land in miles, and already, in many places on either hand, the great seas were making a clean breach of the slender ring of the atoll and surging into the lagoon.
The gales increased: she lay in the trough, the seas made a clean breach over her.
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