An Universal Dictionary of the Marine / Or, a Copious Explanation of the Technical Terms and Phrases Employed in the Construction, Equipment, Furniture, Machinery, Movements, and Military Operations of a Ship. Illustrated With Variety of Original Designs of Shipping, in Different Situations; Together With Separate Views of Their Masts, Sails, Yards, and Rigging. to Which Is Annexed, a Translation of the French Sea-terms and Phrases, Collected from the Works of Mess. Du Hamel, Aubin, Saverien, &c.

by William Falconer

DÉRADER, to drive with the anchors ahead; to be driven from the anchors and forced out to sea, by the violence of a storm.

DÉRALINGUER, to blow from the bolt-rope, in a storm; spoken of a sail.

DERAPER, to loosen from the ground; understood of the anchor when it is almost aweigh.

DÉRIVATION, the yawing, or deviation from the line of the course.

DÉRIVE, the angle of lee-way, or drift.

Dérive is also the stray-line, or allowance made for stray-line, occasioned by a ship’s falling to leeward, when sounding, in deep water.

Dérive is likewise used for a lee-board. See Semelle.

Dérive qui vaut la route, a drift favourable to the course.

Belle Dérive, a good offing, or sea-room.

DÉRIVER, to drive, to be driven to leeward by a tempest or foul wind.