BrokeSailor - H36 Technical Data
Steve -When I ordered Persephone I asked for the AVS and the sinkage rate data from Hunter, since I needed them to send me the sailmaker data package for Doyle to make my custom sail suite.An e-mail from Glen Henderson specified the sinkage at 1174lbs/inch (from which you can compute her waterline area as approximately 220sq-ft).He also attached a PDF of the computed H356 static stability curves, which shows the cross-over for a light-ship plus 150kg (in the cockpit, for crew) as 114 degrees with bulb-keel and 118 degrees with deep fin keel. The graph was labelled Hunter Marine Corporation CONFIDENTIAL, so I won't post it on the Internet. However, a quick computation of the areas under the positive and negative portions of the curves shows that it will take no more than one-third of the capsize energy to right her from an inverted position.Obviously, the AVS is marginal for transoceanic passaging. However, dynamic stability is a lot more complicated than static stability, and the inertia of a "heavy old-fashioned" Aluminum mast with a Radome on it and the roller-furled Genoa makes Persephone's responses to 4-to-6 ft chop on her beam while motoring very ladylike. I've had her in larger stuff, but only under sail and in deep water swells - not the shallow water chop that is really much more of a test without the wind to hold her heel angle.Clearly, this is not a hull design to allow to lie a-hull under bare poles in a storm. Making way under minimal sail, however, she can handle a lot more than I care to volunteer for. She'll heave-to well in sustained winds at least up to 30-35kts (my curent limit of experience with her). However, in winds gusting over a very large range, you must stay by the wheel to deal with any large changes in weather helm caused by the wide stern as each gust that substantially changes her heel angle comes and goes. She patiently adopts a very stable attitude when pinned over by a knock-down, and keeps a dry cockpit while waiting for you to let go the sheets.If you want a boat in which you can go hide below decks while she handles the storm by herself, this isn't it. However, if you're willing to sail her, she'll take very good care of you (in moderate gale conditions, by my experience, and probably a lot more).(My avatar photo was taken while beating through 3-to-5 triple-reefed in 25kts of wind. Note the flat sailing angle. This is not a tender boat.)I'm very comfortable with the H36 for sailing up and down the Gulf of Maine and in Massachusetts Bay. I've no experience sailing in Chesapeake Bay, but from what I've heard I suspect she'd do well there, too.Don't let Jim pull your leg about feeling like you're maneuvering a house. She'll steer as well stern-first as bow-first, and you'll be able to use prop-walk to spin her in place around her own keel. Of course, I don't suppose you'll be playing any "human fender" games with a 7 ton boat <g>.Good luck with your new lady - I think you'll like her.