The Australian Transport Safety Bureau (ATSB) has released an interim report detailing the dramatic breakaway of four ships during a severe storm at the Port of Brisbane last year. The incident, which unfolded amidst rapidly deteriorating weather conditions, highlights critical aspects of maritime safety and port emergency preparedness.
On November 24, 2025, South East Queensland was gripped by hot and humid weather, a precursor to significant thunderstorm development. The Bureau of Meteorology had issued marine forecasts warning of potential thunderstorms throughout the afternoon and evening, a pattern that had persisted for much of the month.
As the day progressed, warnings escalated. By 0945, the regional harbour master received a briefing on ‘very dangerous’ thunderstorms, expected to bring destructive winds and giant hail. These warnings were promptly relayed to the vessel traffic service (VTS), prompting instructions for ships at container berths to implement additional mooring precautions.
Throughout the morning, port operations continued with inbound vessels, including a car carrier, preparing for transit. However, as severe weather warnings intensified, concerns grew. An inbound car carrier’s pilot, noting forecast winds of up to 40 knots, requested additional tug assistance for berthing. Limited tug availability, coupled with the escalating weather threat, led to the vessel’s arrival being postponed.
By 1243, the Bureau of Meteorology issued its first in a series of severe thunderstorm warnings, detailing storms tracking north-east towards the region. Updated warnings soon showed thunderstorms intensifying and moving directly towards the port area. At 1427, a ‘very dangerous’ storm warning was broadcast to all vessels via VTS, forecasting giant hail, destructive winds, and heavy rainfall.
In response, cargo operations on multiple container vessels were suspended, and stevedores were disembarked as conditions rapidly deteriorated, with wind speeds exceeding 30 knots. The departing gas tanker also delayed its transit due to the severe weather.
ATSB investigators have since attended the affected vessels and the port, collecting evidence and interviewing personnel. Voyage data recorders were recovered from multiple ships, and meteorological information was provided by the Bureau of Meteorology. The ongoing investigation will meticulously analyze meteorological conditions, mooring arrangements, towage operations, emergency preparedness, and the overall effectiveness of port procedures and operational guidance.
Maritime safety remains paramount, and a final report will be published upon the conclusion of this comprehensive investigation. Should critical safety issues be identified during the process, relevant parties will be notified immediately to facilitate timely safety actions.
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