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.

Gap Analysis


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.

The MSMP workbook facilitates the MSMP development process. It can also serve as a temporary MSMP while the full plan is under development. The gap analysis also includes an investigation into deck equipment compatibility, including review of all relevant D/d ratios and specifications (MBLSD1 vs. LDBF2 vs. WLL3).


Personnel well-versed in MEG4 will be available as consultants throughout the process. Templates and training materials will help streamline education and transition processes.


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.

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.