Listing, flooding and grounding of vehicle carrier Hoegh Osaka

Location: Bramble Bank, The Solent, England.

Accident Investigation Report 6/2016

Investigation report into marine accident including what happened and safety lessons:

MAIB investigation report 6-2016: Hoegh Osaka

Annexes to MAIB investigation report 6-2016

Video statement from the Chief Inspector of Marine Accidents:

Chief Inspector statement


The Singapore registered pure car and truck carrier (PCTC) Hoegh Osaka was departing Southampton, UK, and turning to port around the Bramble Bank when the ship developed a significant starboard list. As the list increased in excess of 40º, the ship lost steerage and propulsion, and subsequently drifted aground on Bramble Bank. A cargo shift as the ship listed resulted in a breach of the hull and consequent flooding. All crew were safely evacuated from the ship and surrounding waters. There was no resulting pollution, and the ship was later successfully salvaged.

Stability modelling and analysis following the accident show that Hoegh Osaka listed heavily to starboard while turning around Bramble Bank as a result of having inadequate stability, which had not been identified prior to departure.

Safety Issues

  • Assessing a ship has adequate stability for its intended voyage on completion of cargo operations and before it sails is a fundamental principle of seamanship that must not be neglected
  • A loading computer is an effective and useful tool for the safe running of a ship. However, its output can only be as accurate as the information entered into it
  • It is imperative that working practices enable correct information to be provided and that sufficient time is made available before departure for an accurate stability calculation to be completed
  • An accurate stability calculation before departure is fundamental to safety


The MAIB has made recommendations to the Maritime and Coastguard Agency (2016/110), the Association of European Vehicle Logistics (2016/111) and the International Chamber of Shipping (2016/112) which seek to improve safety in this sector of the shipping industry.

A safety flyer highlighting a number of the safety issues was produced for this report

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