Nautical Term: Double up
Definition of Double up
1. To double up a vessel’s mooring lines means to add an additional set of mooring lines to the existing ones. This practice is employed to ensure the security and stability of a boat at its mooring.
For instance, a sailor intending to spend a stormy night at the mooring may choose to double up his mooring lines to minimize the risk of the boat dragging against the mooring or drifting away due to the force of the waves.
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