To UNDER-RUN, parcourir, to pass under or examine any part of a cable or other rope, in order to discover whether it is damaged or intangled.
It is usual to under-run the cables in particular harbours, as well to cleanse them with brooms and brushes from any filth, ooze, shells, &c. collected in the stream; as to examine whether they have sustained any injury under the surface of the water; as, from rocky ground, or by the friction against other cables or anchors.
Plate. xii to face Vessel
To Under-run a tackle, is to separate the several parts of which it is composed, and range them in order, from one block to the other; so that the general effort may not be interrupted, when it is put in motion.
Under sail, the state of a ship when she is loosened from her moorings, and under the government of her sails and rudder. See Helm and Sail.
UNLACING, déboutonner, the act of loosening and taking off the bonnet of a sail from its principal part.
To UNMOOR, desafourcher, is to reduce a ship to the state of riding by a single anchor and cable, after she has been moored or fastened by two or more cables. See the articles Anchor and Mooring.
UNREEVING, the act of withdrawing or taking out a rope from any channel through which it had formerly passed; as in a block, thimble, dead-eye, &c. See Reeve.
To UNRIG a ship, défuner, is to deprive her of the standing and running rigging.