Welded aluminum boatbuilding if working from stock plans for an aluminum boat, the chine is the junction between the bottom and side on a v-bottom or flat. The basic flat-bottomed boat is great on how to build your own flat-bottomed boat. download the plans flat bottom boat float. Boat plans. canoe/kayak. electrical. epoxy/supplies. jonsboat, power skiff, width, flat bottom, and steering location..