At this time the model boat hull should be ready for some details to be added. the classic way of boat construction includes a stem, sternpost and keel.. The selway fisher design model boat manual includes many model boat construction guides and model boat plans. follow the how to guides to construct your model boat.. 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 only..