: I am starting a build of the Yostwerks Sea Rider (my first SOF) and
: was wondering what the "HB" and "HAB"
: measurements in cm are for the forward and rear deck stringers
: that run from cross sections 3 & 4, as well as 5 & 6.
: The pics I've seen of various Sea Riders show deck stringers,
: but in looking at the offset table, I was a little confused on
: the measurements for those cross sections.

: Thanks,
: -Matt

cm= (ft x 12) x 2.54

The aft deck stringers are level with the gunwales. The forward stringers are as per the offsets on Tom's site, under "Deck Ridge." That's .710 ft HAB for frame 3, and .2/.833 ft HB/HAB for frame 4.
BUT, you can make your frames/place your deck stringers as high and as wide apart as you like (I wouldn't raise the aft deck at all, though). The important thing is your hull shape, not what the foredeck looks like.

The Sea Rider is a great boat - have fun!
Dave Gentry