meg-4The regulatory environment is rapidly evolving, with a significant emphasis being placed on equipment compatibility and improved life-cycle management of mooring lines. OCIMF’s release of the fourth edition of its Mooring Equipment Guidelines (MEG4) provides recommendations for mooring system design, selection, maintenance, and retirement. With the Icaria Compliance program, Samson aids you in developing a plan for the transition to the updated guidance, for both new and existing vessels.

The updates in MEG4 represent the most significant changes undergone for all considerations related to mooring lines. With Icaria, Samson aids in identifying gaps, developing a plan for the transition to the update guidance and provides the tools and services for plan implementation.

Assistance with:

  • Selection of the appropriate mooring line system or confirmation of the appropriate mooring lines for your vessel.
  • Assessment of product/equipment compatibility.
  • Identification of focus areas for more frequent, or robust, maintenance routines.
  • Setting service life expectations based on Samson experience and references, customer experience, application trends, and historical data.
MEG4 Compliance Confusion

The fourth edition of OCIMF’s Mooring Equipment Guidelines (MEG4) provides recommendations for mooring system design, selection, maintenance, and retirement. Samson experts can provide guidance and clarity to certification and product performance validation.

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Compliance Package


  • Facilitating the MSMP development process, the workbook serves as a temporary MSMP while the full plan is under development.
  • Identifying hidden gaps to obtain MEG4 compliance, our gap analysis includes an investigation into deck equipment compatibility, including a review of all relevant D/d ratios and specifications (MBLSD1 vs. LDBF2 vs. WLL3).


Following review of existing line maintenance policies, Samson will provide recommendations to align maintenance frequency, reference documentation, and facilitate the development of a line management plan as described in MEG4.


Personnel well-versed in MEG4 will be available as consultants throughout the process. Templates and training materials will help streamline education and transition processes. More can be found on our MEG4 Compliance expertise here.


1MBLSD (Ship Design Minimum Breaking Load) – The minimum breaking load of new, dry mooring lines for which a ship’s mooring system is designed in order to meet OCIMF Standard Environmental Criteria restraint requirements.

2 LDBF (Line Design Break Force) – The minimum force at which a new, dry, spliced mooring line will break, when tested according to MEG4 Appendix D, “Guidelines to Purchasing.”

3 WLL (Working Load Limit) – The maximum load that a mooring line should be subjected to in operational service, calculated from the MEG4 Standard Environmental Restraint Criteria.


*The Icaria Compliance package can be purchased separately from other plan elements. However, Samson recommends the complete Icaria package. If your company maintains equipment or operational compliance in accordance with any other regulatory frameworks, ask how Icaria can support these guidelines.