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The present DNV GL standard has been specifically aimed to cover all operational aspects on board AH tugs. The OOW, i.e. officer on watch, will manage all anchor handling and towing operations on board, including their planning and preparation, ship management, bridge watchkeeping and shiphandling. No any distinction was made between Watchkeeping Officer and Master. Dynamic positioning (Joystick-mode) has been considered an integral part of the competencies of the person acting as OOW. It is not specifically addressed in this standard but covered in the standard DNVGL-ST-0023 Competence of dynamic positioning operators - Notation AJ/S. The Winch Operator must, in close cooperation with the OOW, be able to perform all winching operations that are related to anchor handling, taking into account the operational plan, all safety aspects, maximum forces and stability of the vessel. The deck responsible person will ensure the safety on deck and coordinate and execute the deck activities as captured in the competence table. The standard consists of three major sections - introduction, taxonomy, and competence requirements, and one appendix containing the list of reference material.