Backup GPS data in an organized format. Pages include: waypoint index, passage records and worksheets for dead reckoning.Pages include: anglers trip logs for recording sea conditions, activity, destinations, loran coordinates, water temperature, hot spots and catch records.Contains quick reference index with flat plain and 406 MHz EPIRB registration forms and more.Attractive, embossed cover made of heavy flexible waterproof material.Spiral bindings allow pages to open flat for ease in recording information.Every log contains over 8 pages for recording critical information, in addition to handy quick reference pages covering various topics.All logs are designed to fit inside our teak and leather covers for a more impressive presentation.Dims: 11-1/2" x 8-5/8" (292 x 219 mm).Weight 0.94 lbs. (426 g).