free course

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
FREE COURSE, Mar. law. Having the wind from a favorable quarter. 
     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. 
    

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