Wiktionary
n. 1 (context nautical English) The act of tacking, turning into the wind so the sail moves to the opposite side. 2 (context idiomatic English) A reversal of an opinion.
Usage examples of "change of tack".
Hal did not pause but went up the shrouds noting the change of tack and the new setting of the sails that had taken place while he slept.
He had drawn his sword, and was standing motionless, staring at the enemy frigate as she loomed into view, as if she and not Valkyrie had made the violent change of tack.
Letourneur is the only one of all the passengers who has remarked the change of tack.
Too abrupt a change of tack wouldn't overset themthe outriggers prevented thatbut it might crack or unstep the mast.
Instead he threw Kolhammer off balance with a pause and a change of tack.
The wind was from the south, and Sax tacked down into it, enlisting Bao's help at every change of tack.
With the slight change of tack, and extra canvas to give her more speed, Trojan would sweep across the enemy's wake and pour a broadside, gun by gun, the length of her hull.