Dimensions are nominal and will vary slightly with accessories like rubrail etc. the gulfstream 28 is a moderate vee, relatively narrow boat (beam/length ratio of 3.4. Tech support. the best technical support: we will help you succeed! all our plans and kits come with full technical support. ask questions on our support web site. Boat plans for the 12 imagine what two weekends, the plans for this fast build pirogue and two sheets of plywood will do?.