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OCIMF’s STS Service Provider Management and Self Assessment is an important tool that helps Ship to Ship Service Providers assess, measure and improve the safety and effectiveness of their management systems. This second edition has been updated to reflect current legislation, expectations and emerging issues and incorporates feedback from STS Service Providers and users of the first edition. It is based on the principles of the Tanker Management and Self Assessment (TMSA 3) programme that was revised in 2017.


The self assessment programme encourages STS Service Providers to assess their safety management systems against key performance indicators. It provides a minimum expectation level and an additional three levels of increasing best practice guidance. The results can be used to develop plans that support the continuous improvement of management systems and the attainment of high standards of safety and pollution prevention.
Key updates to this edition:

  • Where applicable, the elements have been aligned with TMSA 3
  • A new element has been added that covers Maritime Security
  • The ‘Reliability and Maintenance of STS Equipment’, the ‘Due Diligence Regarding Transhipment Locations’ and the ‘STS Operations’ elements have been expanded to include new sections
  • The ‘Environmental and Energy Management’ element now incorporates the OCIMF Energy Efficiency and Fuel Management paper that was a supplement to TMSA 2
  • Elements have been streamlined and merged to improve consistency and make self assessment easier

The best practice guidance has been expanded to complement the key performance indicators and revised to remove ambiguity and duplication.

This new edition supersedes the first edition:

Ship to Ship Service Provider Management, Incorporating STS Service Provider Self Assessment.