Well, the site ate my first reply, so the short version:
Multiple inches by .028571 for 1/35th scale
Multiple inches by .006944 for 1/144th scale
eboat (Not sure if the figures on Wikipedia are waterline length or overall)
Length: 36.8503937"
Beam: 5.691788527"
Fletcher Class (OA length)
Length: 31.36805556
Beam: 3.298611111