Built in Rockland Maine, by North End Marine - Eric White, builder
Divinycell sandwich construction.
Thanks to Alan Adler for information and updates. From Alan: I wrote an article about Fast-40 in Yachting approx 1981, which attracted 50 letters from people who (like me) wanted a narrow, lightweight yacht. Cape Bay Yachts contacted the 50 and put together the order for 15 boats and ordered a batch from North End. During the run, 3 more customers joined.