Careening : The operation of heaving the ship down on one side, by the application of a strong purchase to her masts, which are properly supported for the occasion, to prevent them from breaking with so great a strain
William Falconer's Dictionary of the Marine, Glossary, Published by South Seas using the Web Academic Resource Publisher, London 1780. (http://threedecks.org/index.php?display_type=glos sary, (Mrtm - Brit) {583}