Research and analysis

Safety lessons: checking critical equipment on ships

A safety message to the shipping industry to ensure that protection systems for critical equipment is fail safe and regularly tested.


MAIB safety flyer issued December 2011

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This summary concerns the catastrophic failure of a capacitor and explosion in the aft harmonic filter room on board the cruise ship RMS Queen Mary 2. In particular, it stresses the importance of thoroughly checking harmonic filters with current imbalance protection systems, by a competent person.

The information has been prepared for the:

  • shipping industry

An investigation report has also been produced for this accident.

Published 22 December 2011