Posted by BBH on July 11, 2002 at 18:19:22

In Reply to: What's under the floor? posted by MADHUN on June 17, 2002 at 15:19:36:

These are probably where liquid foam was sprayed in for extra flotation. The manufacturer sprays this foam in in liquid form then it cures and adds bouancy between the hull and any voids between it and the floor surface.