I posted some photos of a cottage industries model of Bushnell's revolutionary war submarine the "Turtle".They can be viewed at http://www.msnusers.com/KeystoneDesign
Look under pictures. There is also a couple of photos on the site of a model of the U.S.S. Fleming DE 32 .My Dad served on the Fleming from '43-'45.
The Fleming is credited with the first Japanese sub kill of 1945.
Jack