The present invention relates to a fender, which is used as cushioning material mainly at the time of a ship being moored, and a management system thereof. A transponder is mounted in a fender 1 that is an object to be managed, and an ID code is read by the transponder in the fender 1 being accessed...http://www.google.co.uk/patents/US6486800?utm_source=gb-gplus-sharePatent US6486800 - Fender and management system thereof
