[QUOTE=Morty;641236] There would be no way for four men in the crowded confines of an escape trunk to inflate tied off dungarees anyway. There's barely enough room for each man to squeeze through the escape hatch one at a time. QUOTE]

Thanks for the information. I don't think the intent (from what I heard) would be to inflate the legs before leaving the sub, but to remove the pants on the surface and inflate them there. This is a standard technique taught in Red Cross and YMCA lifesaving courses. It would be used if one found himself in the water without a PFD.