Yes, I've run a search, and I understand the pros and cons of making an existing design longer and the percentages. Here's a little different situation.
My dad built many boats, among them a 12' bateau, flat-bottomed, outboard powered, which I still have. It's 40 years old and sound. I love the little boat, and I'd like to have one just like it, but 14, maybe 16 feet. I want it to be the same design as dad's, both out of nostalgia and as a tribute, as well as the fact that he had a certain way of building which I've not seen in other bateaus. It's probably why people would come from all over the south to have dad build bateaus for them. There's something about his lines, which were never put on paper, that make for a sweet, pretty little boat.
Here's my questions, please:
1) I'd like to "taker her lines" and put them on paper as she is, for posterity, so to speak. Would the baseline to measure from on a bateau be the bottom? I am thinking I could do a fairly good job with careful measuring of her dimensions and shape, and transfer it to paper.
2) I have access to Corel Draw and Adobe Illustrator, which I understand are not CAD programs, but that's what I got and understand fairly well already from my work at the newspaper. Think I could generate a decent set of plans with these? I'm not going to sell them or anything, just like I said, preserve the design.
3) Enlarging: If I go to 14 or 16 feet, would I establish a percentage number which represents the enlargement, and apply that number across the board? I.e., the same number to length, beam, freeboard, etc.?
4) The boat is plywood. With the increase in size in mind, does she need more frames, or just an increase in the spacing of the existing number of frames? There are six frames between transom and bow. The rear two are closely spaced to form a seat and storage bin, then forward there are two frames in the same fashion to form a seat and livewell. There is one frame between the two seats and one where the bow curves up to the head block.
What ya think?
Regards from the Rez,
[ 12-15-2002, 10:41 AM: Message edited by: Roger Stouff ]
"And look at Elias Wonder. Yeah, take a gander at that buzzard. Forty years ago he was happy, generous, charitable, tall, dark and handsome. Then he took up the fly rod. Now consider him. Uglier than fresh road kill. Evil-eyed, cantankerous, sullen, mean. An anti-social misfit that causes a groundswell of spleen wherever he goes."
-- Harry Middleton