Guidance

MGN 672(M) Extended Dry-Docking

Extended dry-docking allows vessels to be inspected out of the water at 7.5 years intervals, rather than 2 inspections in 5 years (no more than 36-month intervals), subject to eligibility.

Documents

MGN 672(M) extended dry-docking

Details

Notice to all shipowners, masters and UK Recognised Organisations.

This notice should be read in conjunction with:

  • The Merchant Shipping (Survey and Certification) Regulations 2015,
  • Merchant Shipping Notice 1672 (M+F) (as amended),
  • Merchant Shipping Notice 1751(M+F) (as amended) and Marine Guidance Note 546 (M) (as amended).

Updates to this page

Published 13 August 2025

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