Aluminum Bank Dory

[jsirm]

Hello, I am new to this forum and have enjoyed reading the posts. I have decided that this summer I will build a boat that has been lingering in my mind for almost ten years, an aluminum bank dory. with a 9.9 horse honda OB, it will be cheap but slow. This boat type was the prevalent work boat 40 years ago. It will be 20-22' OAL and 16 to 18 feet on the bottom. probably no more than 7' beam max. Im thinking 3/16" sides and bottom, My big questions are framing and the OB well. All framing will be straight so no bending. Im not sure what type of extrusion to use. I need the well to allow the engine to be tilted up. For this to not intrude on the transom the engine will end up mounted quite far foreward, almost 1/3 from transom to stem. Im concerned about steering, as Im not anxious to have a rudder hung on the stern. Also, the possibility of adding a few strakes to the bottom might benefit steering (prevent the engine from just pushing the hull sideways when lightly loaded. It would be great to hear what everyone has to say about this project, Ill end up using offsets for a wood boat and copying other boats of similar size.

[hoagey]

Something like this?

http://www.dixdesign.com/20fish.htm

[jsirm]

nope, like this. The closest thing I have seen in aluminum are drift boats for river fishing, they are short, wide and with alot more rocker and sheer. A dory 20" overall with an 8 or 9.9 hp outboard would probably only go 6 knots they do not plane, but are wonderfully cheap and seaworthy. I would be beaching the boat alot and possibly using a sail for running with favorable winds. From some of my reading it sounds like I should use 2 longitudinals, maybe channel, and then straight bar frames every 30" or so, and the frames should be spaced off the floorplate? this boat Im describing is very similar to the dorys used in the last years of schooner/dory cod handlining in Alaska. Thanks
Ian

http://www.doryshop.com/thumbnails.html

[Raggi_Thor]

Look at some of old Atkins designs.