Public preview. Built from real public data on November 9, 2026, 5:41 AM UTC.
Securidigm Watch Transportation cyber intel
Home / Rules
Voluntary guidanceMaritime Commons post (cyber category)

Marine Safety Information Bulletin (MSIB) 04-26: Applicability of MTSA Cybersecurity Requirements to Inactive Vessels

Coast Guard · August 27, 2026

About rule labelsAutomated summary and label. Securidigm Watch is an information service, not legal advice. Labels such as 'mandatory' are generated automatically and may be wrong or out of date; whether and how a rule applies depends on your designation and the official text. Always read the official source linked here and confirm with the issuing agency or your counsel.

Summary

MSIB 04-26 reinforces that MTSA cybersecurity requirements continue to apply to “Inactive” vessels that retain a valid Certificate of Inspection (COI) or Certificate of Compliance (COC), even during nonoperational periods.

From Coast Guard, quoted as published. Check the source before acting.

Why it's on these mode pages

  • Maritime: Coast Guard maritime cyber guidance (matched by rule)

Change history

  1. November 9, 2026: First collected by Watch

Securidigm Harbor helps Coast Guard–regulated operators organize this work offline. securidigm.com