Mary

I have looked at most of the new boats. The only boat, that I think might sink if both hulls are holed, is a monoque carbon A-class. The hulls are ~ 2mm stressed skin carbon and nothing else in the hulls. For a race I would probably risk it. For everything else, I would probably want 10-20 liters of airbags in each hull.

Recently a lot of my packages have been padded with little half liter airbags. They are permanently sealed plastic bags. They are pretty tough. I would probably use them for floatation