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. 1940 chris craft barrel back owner: dean kaczorowski home port: shawano, wi. 1940 barrel back powered by a kb motor. purchased in fall of 2016 and recently put into. Custom sold: length: 72′ – 21.94m – year: 1996 : a true dream boat! every individual has those moments when they are caught day dreaming about a 72′ motor yacht..