Joe, whether the great state of TX makes any
distinction or not, that FORMULA only applies to powerboats and should not be used for sailboats. I could safely, if not necessarily comfortably--carry 20 people on my 32' twin engine powerboat...and did, but only to ferry 'em to a picnic on an island. Powerboats run flat...all that matters is that weight be pretty much evenly distributed--and even that can be compensated for to some extent with the use of trim tabs--and that the boat keeps sufficient freeboard to prevent it from swamped. As long as the boat isn't overloaded, it can run safely in any conditions at any speed safe for those conditions. A sailboat, however, is an entirely different "breed of cat"...there's no place to put 20 people on a 30' sailboat that won't interfere with the boom and the skipper's ability to pilot the boat. You MIGHT be able to do it under power on calm water with the sails down and people scattered all over the foredeck as well as stacked like cordwood in the cabin...but you can't use a capacity formula for only certain situations and conditions. A capacity formula determines the maximum load a boat can carry in ANY conditions. So while I suppose you COULD apply the 3000 lb result to cargo below decks on a sailboat (and without knowing enough about hull dynamics to know how 3000 lbs would affect trim and other sailing characteristics, I'm not even sure you can do that), translating it to 20 people on a sailboat under sail is a good way to hurt the boat and/or people. Furthermore, I'll bet you a nickel that the TX reference doesn't specifically mention powerboats or sailboats...it just says "boats." And if you ask 'em if the same formula applies to sailboats, they'll just tell you that sailboats aren't required to have capacity plates. When this subject came up last time, I called Hunter and asked them the max number of people on a 23'...they told me 6 max, 4 is better.