Another set of lines, a British Tug of about 90 years ago, fairly small at 100 horsepower and 56 feet length. A half size replica would be 28 feet long, draw 30 inches at 8.5 tons displacement, and use 12.5 horsepower to get about 7 knots. It would be prudent to make the bulwarks part of the hull, as the original design had very little freeboard.