Of a ship: To turn aside, alter its direction, swerve to either side of its course, in obedience to the helm. Chiefly with advs., as off, out, away.

the longitudinal curve of the vessel decks in a vertical plane, the usual reference being to the ship side; in the case of a deck having camber, its centreline sheer may also be given in off sets, curvature of deck in a fore and aft direction as seen in profile