This post discusses a recently released Mission Management System Work Instruction regarding the U.S. Flag Interpretations on the ISM Code to provide supplemental flag state guidance regarding the development, implementation, and verification of safety management systems on U.S. Flag vessels. This work instruction also includes specific provisions to assist in assessing risks and developing contingency plans for emergency shipboard situations, and is designed to be used in conjunction with CVC-WI-003, USCG Oversight of Safety Management Systems on U.S. Flag Vessels. Industry stakeholders and Recognized Organizations are encouraged to reference this guidance when developing, implementing, and verifying SMSs in order to promote a strong safety culture throughout the U.S. flag fleet.