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The DNV GL standard dealing with the requirements to the ship-handling competence for berthing/unberthing large ships. It is clear to everyone today that the constantly increasing sizes of the ships, particularly container ships, poses so many new challenges for the officers of the vessels at the time of unberthing and berthing of the ships. The sizes of the vessels in question may exceed 400 meters in length. In addition to what has been mentioned above, the serious need to maintain slow-speed control of these huge ships under different environmental conditions impose additional number of skills on the officers. The present standard is mainly intended to address all special competencies required by the officers responsible for berthing/unberthing large ships having specific manoeuvring characteristics. Please note, however, that the other competences such as port approach and anchoring are not considered part of the scope of the present document. The ship's officers who are responsible for the operations dealt with in this standard must at all time be able and ready to take command of the vessel, operate the controls for the propellers/thrusters/rudders, and use tugs in any weather condition. In short, the standard describes what and how the ship's officers must do during the berthing and unberthing of the large vessels.