We have become dependent on our Dive Computers to the point that many divers do not even own a set of Dive Tables anymore. However, the Safe Diver always has a Backup Plan, just in case. Make sure you have a set of Dive Tables in your Save-A-Dive Kit just in case your Computer suffers some 'Technical Difficulties'. These Waterproof Dive Tables have an Easy-to-Follow Flow Chart, and U.S Navy Decompression Tables to 190' (58 meters). These Waterproof Plastic Tables measure 6" X 8" (15.2 cm x 20.3 cm) and have an Eyelet for attachment of a Lanyard.