1. Reply to an order or command to indicate that it, firstly, is heard; and, secondly, is understood and will be carried out.
2. Technically the correct reply from a boat to a challenging ship on being hailed when there is an officer onboard. If the captain of a ship is in the boat the reply is the ship's name.
Added: 2014-11-01 Last modified: 2014-11-01
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