Boat plans for the 15 "i finally finish my 15′ dinghy from your plans. today, my son and i took the dingy out on her first main voyage.. Scroll down this page for many more plans. this a page of links to some favourite free boat plans at intheboatshed.net. they’ve been chosen because they are derived. This is the boats, dories and other watercraft category of information. this free woodworking plans list features an extensive list of free building projects to.