NR493 Mooring systems for offshore units

This Rule Note provides requirements for the classification of mooring systems and gives technical requirements, criteria and guidance on the design, construction and installation of the mooring systems.

Reference	Title	Date
NR493 R05	Mooring systems for offshore units	March 2026

Check the list of main changes.

Check other Bureau Veritas rules and guidelines, including:

NR445 Rules for the classification of offshore units
NI604 Fatigue of top chain of mooring lines due to in-plane and out-of-plane bendings
NI432 Fibre ropes for offshore services

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