Maintaining, servicing, repair, overhauling, refurbishing, restoration and preservation of life saving equipment, namely, lifeboats, rescue crafts, davit systems, life rafts, pyrotechnics,emergency position indicating radio beacons, portable fire extinguishers, lifejackets, immersion suits and other ancillary lifesaving equipment, FRP hulls, hulls, engines, ON-LOAD, and OFF-LOAD release systems, water spray systems, compressed air systems, structures, winches, motors and wire ropes