Heavy ropes or wires used to secure a vessel to a berth, buoy, or another vessel. A standard mooring arrangement includes headlines, breast lines, spring lines, and stern lines, each serving a specific purpose in holding the vessel in position.
Category: Ship Structure & Parts
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HullThe main body and structural shell of a vessel, including the bottom, sides, and deck, that provides buoyancy and watertight integrity.KeelThe principal structural member running longitudinally along the centerline of the bottom of a vessel's hull, from bow to stern.MastA vertical pole or structure rising above the deck of a vessel, used to support navigation lights, radar scanners, communication antennas, and signal flags.Poop DeckThe raised deck at the stern of a vessel, forming the roof of the aft accommodation or steering gear compartment.PropellerA rotating device with blades mounted on a shaft that converts engine power into thrust to propel the vessel through the water.RudderA flat or streamlined vertical plate mounted at the stern of a vessel, used to steer the ship by deflecting water flow when turned.
Back to DictionaryEntry updated May 2026