2. To prevent collision of vessels, it is the duty of the vessel having a free course to give way to a vessel beating up. to windward and tacking. 3 Hagg. Adm. R. 215, 326. And at sea, it is the duty of such vessel, in meeting another, to go to leeward. 3 Car. & P. 528. See 9 Car. & P. W. Rob. 225; 2 Dodson, 87.