Tack, v. i.(Naut.) To change the direction of a vessel by shifting the position of the helm and sails; also (as said of a vessel), to have her direction changed through the shifting of the helm and sails. See Tack, v. t., 4.
Monk,... when he wanted his ship to tack to larboard, moved the mirth of his crew by calling out, “Wheel to the left.” Macaulay.