The navy has a voyage log and a docking log. To put it bluntly, the docking log is a work log, which is generally filled in with pens and signature pens. The voyage log is filled in during the voyage, usually with a pencil, and is not allowed. Use an eraser to make corrections. Use a single horizontal line to delete the above log corrections, and then register the correction content, time, signature and period from bottom to top on each page. To add some personal information, the voyage log generally understood by everyone is to record every detail and various important matters after the ship sets sail. However, the navy uses the anchorage log instead, and the navy's voyage log only records the ship and the things that are related to the ship. The positional relationship of various movement elements of the ship and so on.