Australian icebreaker Nuyina completes voyage to Denman Glacier in Antarctica

The Australian research icebreaker Nuyina has returned safely to Hobart after a nine-week dedicated marine science voyage to the Denman Glacier, carrying 85 Australian Antarctic Program (AAP) expedition participants and 45 crew.

In achieving its third 2024/25 season voyage, the Serco-operated Nuyina successfully facilitated research and navigated through harsh environmental conditions, including winds at times reaching 63 knots, thick ice, and frequent periods of very low visibility.

The AAP had previously been unable to access Antarctica’s Denman Glacier – which Serco said is of prime scientific interest as one of the largest, least-studied glaciers, with the potential to raise sea levels by 1.5 metres if it melts entirely – because of the glacier’s extreme geographical remoteness as well as logistical challenges.

Serco said the purpose of the voyage was to leverage Nuyina's unique combined capabilities as an icebreaker and research vessel to allow Australian scientists to venture further than what was previously possible, enabling critical studies.

"This science voyage of Nuyina was a very ambitious programme of operations, however everyone really put in the effort to learn…leading to ultimately a very safe and successful voyage," said the vessel's captain Paul Clarke.

"The weather and ice always drive our schedule in the Antarctic. On one day, the wind increased until it was blowing consistently over 50 knots – this means almost zero visibility, and the air temperature remained down at –16°C. However, the ship held position really well."

For safety purposes, the team adapted to 12-hour shifts, organising 24/7 availability of all technical skillsets. This included highly trained staff such as experienced ice navigators and dynamic positioning operators.

Where new operations were being undertaken to support research goals, the crew worked to provide scientists with maximum access to desired locations and marine life. This involved everything from developing new strategies, including running rehearsals of tender launches, to holding MOB practices to ensure thorough preparation.

Having successfully completed its dedicated marine science voyage for AAP, Nuyina departed on May 12 for its fourth voyage of the season, with the purpose of conducting resupply to Macquarie Island.