Can you post the plans?
You may want to make some CAD drawings of the plans.
I have considered using the paper model of a nautilus to make a brass sheet model.
32nd Parallel 1/12th scale U.S.S Holland
Scale Shipyard 1/48th scale Type IX
Alexander Engel 1/48th scale Gato
"Anything one man can imagine, other men can make real." — Jules Verne