Ships with a Garbage Management Plan are also required to have a Garbage Record Book on board in a place where it can be easily inspected. The record book must be filled in by the officer in charge after every discharge of garbage into the sea, every delivery of garbage to port waste reception facilities and every incineration operation. Each entry should highlight the position of the ship, the date and time of the operation, an estimate of the amount and a description of the type of garbage. The Master of the ship signs each page after it is completed. The record should be kept for two years once the book is completed.