385 is one of those boats where the builders give you a displacement
without telling you what its basis is-loaded, empty, or half-tanks. Looking at it, one can see that there is no trampoline, and that the bridge deck
takes up a very high percentage of the boat's overall length-well above average. Clearly, the design goal was a maximum of accommodations for its length, and other considerations were secondary.
Using the figures given by the builders, it has a DL ratio of 156, a SA/D ratio of 18.75 with the gennoa, and the waterline square root is 5.97. Looking at drawings of the interior
, I guesstimate the hull
waterline beam at 5', which would make the hull L/B about 7.2. So, one wouldn't expect a lot of speed from this design. If, as I suspect, the displacement
is unloaded, one would have to correct the DL and SA/D figures, and speed expectations would be even lower. As the saying goes, 'built for comfort, not for speed.'
tells me that the displacement given is the 'light' displacement. Add a hundred gallons of fuel
and the same of water, at least two people and their gear
, and you have added a good 3000+ pounds. That lowers the SA/D to 16.8, and the D/L increases to 186. This combined with beamy hulls will give those who understand these figures the expectation that the Broadblue's performance would indeed be similar to an equivalent monohull