This boat is easy to build using our downloadable boat plans. our boat plans are available for instant download so you can start building right away.. How fast does it go? for estimating the speed for small outboard planing boats see planing speed boat chart. this chart should be used for general estimates. This aluminum boat design (plan) is for a 38 foot crew boat. at 18,000 lbs. displacement with 290 gallons of diesel, 25+2 passengers, with two (2) 275 hp diesel.