Testing my suspicion. After enlarging the section drawings from the MRNS book, these sections were all copied separately. A first test clearly shows a difference with the drawings (bulkheads) from the AOTS book. Grrr  All these (some of of them expensive) books and in none of them you find the simple mention about the length - width of the hull. So i continue with the keel length and the beam in feet. Length keel 60,... cm and beam 23,... cm. The secti