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New Polarstern Build: Model Successfully Passes Ice Tests

Heiner Kubny 9. April 2026 | Antarctica, Arctic, Expeditions, Science
Key milestones have been achieved in the construction of the new “Polarstern.” A scale model of the future research icebreaker has successfully completed tests in the ice tank. (Photo: Alfred Wegener Institute / TKMS)

Significant progress has been made in the construction of the German research icebreaker “Polarstern”: A scale model of the future vessel has successfully passed its final tests in the ice tank. This marks a major milestone in the development process.

At the beginning of March, the 5.66-meter-long model completed its final ice tests at the Hamburg Ship Model Basin (HSVA). It navigated through artificially created ice simulating real conditions of up to 1.8 meters in thickness. The model also handled challenging scenarios such as simulated pressure ridges with ease. Extensive test series examined the vessel’s behavior both in ice and in rough seas. Based on detailed measurements and recordings, the hull shape was specifically optimized.

During the planning phase of the new “Polarstern,” extensive tests are conducted in the ice tank. The successor to the research icebreaker is expected to be built by TKMS in Wismar by around 2030. (Photo: Alfred Wegener Institute / Annika Kropp)

“The successful completion of the model tests is a significant milestone on the path to building the new ‘Polarstern,’” explains Detlef Wilde, Project Director at the Alfred Wegener Institute (AWI). “The realistic simulation enables optimal design of the vessel, both for operations in ice and open water, as well as for demanding scientific missions.”

At the same time, procurement of key components is also progressing. The shipyard Thyssenkrupp Marine Systems (TKMS) has awarded further contracts to suppliers, including for the heating, ventilation, and air conditioning system, as well as for modern hydroacoustic equipment. In total, more than 30 contracts have already been awarded to around 20 companies. Contracts for onboard helicopters have also been finalized.

A particular focus was placed on the selection of helicopters: The decision was made in favor of the Airbus H145-D3. This model impressed with its high efficiency, low emissions, and suitability for demanding operations in polar regions. Two helicopters will be stationed onboard in the future to support scientific missions, logistical tasks, and emergency operations.

Construction of the new research icebreaker is scheduled to begin in spring 2027. To meet this timeline, the timely availability of all key components is already being ensured.

Cavitation tests during the planning process of the new “Polarstern”: Reduced pressure at the propeller creates vapor bubbles, which can affect efficiency and materials. (Photo: Alfred Wegener Institute / Annika Kropp)

“The awarding of key contracts is a crucial step,” emphasizes Oliver Burkhard, CEO of TKMS. “Together with our partners, we are ensuring that the high requirements for quality, performance, and sustainability are met.”

The new “Polarstern” will serve as the flagship of German marine, polar, and climate research. Funded by the Federal Ministry for Research, Technology and Space, the ship is being built in Wismar. It will replace the current “Polarstern,” which has enabled scientific expeditions in the Arctic and Antarctic for over four decades.

With this new build, Germany is securing one of the most modern and sustainable research infrastructures for the long-term study of polar regions.

Heiner Kubny, PolarJournal

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