The Minimum Safe Manning Certificate (MSMC) dictates the minimum number of officers and ratings that must be on board the vessel. The officers must have their appropriate licenses and the ratings must have their appropriate Special Qualifications (SQCs); i.e. ASDs and ASEs.
All officers and ratings must show proof of Basic Training Certification conducted within the last 5 years.
All acting ship security officers (SSO) on board a Liberian flagged vessel must possess the Liberian SSO Special Qualification Certificate (SQC).