OK...no wind, no waves - 185lbs to right sounds about right. But how did you capsize it to begin with if there was no wind? Remember that there is a technique to righting a catamaran so that you use the wind to your mechanical advantage. Make certain the mast is water tight because if it fills it could become unlikely that the boat could be righted at all. A little preparation and you won't have to worry about it.

There are nylon bags that you can keep on board that have a small block and tackle system so that you can 1) attach it to the boat, 2) lower it in the water (and fill it) and 3) hoist it to give you additional righting leverage. There are also righting poles (which are much easier to operate) and obviously outside assistance if you are sailing with other sailboats (double handed so one person can leave the other boat).