The correct answer is A) 11'-00". To calculate the mean draft, you need to average the forward and aft draft measurements. The water level forward is 4 inches below the 11, which means the forward draft is 10'8". The water level aft is 2 inches below the top of the 11, which means the aft draft is also 10'8". The mean draft is the average of these two measurements, which is 10'8" or 11'-00". The other options are incorrect because they do not accurately reflect the mean draft based on the provided information. Option B) 11'-08" and C) 11'-06" are too high, while option D) 11'-04" is too low.