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Unmoor

F5. The Reference Layer: Glossary, Units, Signals and Information Sources

Definition

Procedure to weigh both anchors and prepare to leave anchorage.

Unmoor is the operation of recovering both anchors when a ship is riding to a moor (two anchors down, such as a running moor or open moor) and reducing to a single anchor or getting underway. It also covers casting off mooring lines from a berth. In a two-anchor moor the procedure clears any turns in the hawse, heaves in the lee cable, then weighs the riding cable, the windlass taking the strain as each anchor comes home. Unmooring is the reverse of mooring and precedes weighing for sea.

Source: Standard ground-tackle and seamanship practice; Admiralty Manual of Seamanship, mooring and unmooring procedures.