ShoreMaster Life Raft offers double buoyancy chambers manufactured from a specially formulated polyurethane (PU) proofed nylon fabric. ShoreMaster life raft fabric is highly resistant to abrasion and impervious to corrosion in the marine environment. Far more durable than rubber-based fabrics, the reduced need for repairs results in considerable savings in servicing costs. Welded seams (significantly stronger than glued seams) give the raft an extremely rugged construction. All 8 man