acrylic sheet produced by applying a very hard, highly cross-linked polysilicate (a silicon polymer or polysiloxane) coating to an acrylic substrate; this coating provides the sheet with a surface that has 45 times the abrasion resistance of uncoated acrylic, making it an attractive material for applications requiring the safety, optical and aesthetic qualities of acrylic along with a highly abrasion-resistant surface

S.A.R. pack (search and rescue pack) that will include, in a very compact case, a EPIRB/ELT, VHF transceiver radio, smoke/flares, emergency checklists/procedures, basic first aid kit, possibly a GPS unit and sea marker die