I assume both replies were for one coat? Baltoplate says 300 sqft/gal, suggesting 150 sqft total including keel and rudder? VC17 says 315 sgft/gal. 1 1/2 cans is about 1/3 gal, suggesting perhaps 100 sqft????
Related question: Is one quart working? The packaging says three coats. I've always done 2.