The name given to the raised lip, usually about 15–23 centimetres (6–9 in.) high, with which openings in the upper deck, such as hatchways leading to the deck below, are framed to prevent any water on deck from running down the opening into the space below. They also serve as a framework for the cargo hatches of old-fashioned merchant ships, though in this case somewhat higher, to which the strongbacks and hatch covers can be fitted and battened down, and to which the tarpaulin covers can be secured. In yachts, coamings are the vertical sides of the coach-roof or hatches above the deck.
Subjects: Maritime History.