In response to the issue of acceptable movement standards for ships during berthing operations, an interpretation and analysis is conducted on the latest 2023 edition of Criteria for Acceptable Movement of Ship at Berths released by the Permanent International Association of Navigation Congresses(PIANC).The acceptable movement amounts for loading and unloading operation of various ship types recommended in the new edition are summarized into a table for easy use.The new edition standard is compared with the 1995 edition standard and the relevant content of China's current Design Code of General Layout for Sea Ports.The results show that the new edition standard is more scientific, accurate and strict.The new edition standard clarifies the applicable positions of the acceptable movement of ships, ignores the limitations on the ship's rotation and heave movement amounts, and the movement amount standards for liquefied gas ships, general cargo ships, bulk cargo ships and other types of ships have been reduced by up to 50%.It also improves the operation efficiency grading of container ships.The new edition standard is more in line with the actual operation of ships and is more operable.It provides an important reference for ensuring the safe and efficient operation of ships, the development of ship mooring model tests and the formulation and revision of relevant industry standards.