Could be in either hull, although a large hatch in the leeward one would need a good bit of reinforcing, unless it was outside the beams. The ww hull would float quite high, especially if the doors could be closed and sealed. An upside down bunk in the hull area would be pretty comfortable inverted.
Ideally, the mast(s) would stop the boat turning turtle and you could live in the ww hull, at 90 degrees. This is not a design load for the mast, so not sure how long it would stay up in big waves/winds. With the bendy rigs, sudden capsize is less likely, but if it did happen, my first response would be to get a sea anchor out so the rig was pointing downwind. If this was attached to the up in the air windward hull, it may be draggy enough to reright the boat. Even if it didn't would make a big difference to the loads on the rig and hulls.
Related to this is the idea of a big tender with a largish motor to increase your righting options and/or as a lifeboat. Most cruising capsizes happen when a stronger than normal gust hits, rather than in storms. This implies a more reasonable sea state in which to operate post capsize.
rob
On Fri, Jan 18, 2013 at 7:53 AM, LucD
<lucjdekeyser@telenet.be> wrote:
Cruising cats can have a survival room in one of the bows for when it capsizes. It is not obvious to me what the equivalent would be in a hp proa: in the lw hull? both bows?
Luc