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StarFreeze containers revolutionize tuna transport for longliner industry; ultra-low temperatures preserve quality from remote ocean zones to market

Sep 6, 2024 Press Release 4 min read

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September 6, 2024 (press release) – The longliner industry is benefitting immensely from StarFreeze TM containers and the ultra-low temperatures it promises.

Where does the tuna come from? 

Some of the remotest zones in the ocean harbour the world’s most premium quality tuna. These fish are caught by the longliners, a class of ships that drop anchor
in these regions for months at a stretch. 

Once a sizeable quantity of tuna has been caught, the immediate task is to store the high-value fish and transport them as efficiently as possible to a market. This involves carefully freezing the tuna to preserve its freshness and quality during the long journey back to shore, where they are then auctioned off to the highest bidder.

What poses a challenge to tuna quality? 

The tuna needs delicate care to maintain its best quality so that it can fetch the best possible prices. The key challenge is to ensure an unbroken cold chain: from the time it is offloaded and stuffed into containers, to its arrival at destinations anywhere in the world. 

Currently, bulk vessels equipped with refrigeration capabilities are used to transport tuna from fishing zones to market ports. Meanwhile, longliners, which have time and destination limitations, continue to fish. Alternatively, the longliner itself may return to its home port once or twice a year to directly offload the tuna, but this incurs significant time and maintenance costs. 

How can the tuna stay fresh?

To maintain the texture, quality, and nutritional properties of the tuna throughout its journey to destination markets, Maersk employs a dual strategy: an unbroken cold chain through our one-stop solution (see graphic below) and the all-new StarFreeze™ containers. 

These containers are powered by an advanced insulation and refrigeration technology, supporting temperatures as low as -60°C, ensuring the valuable tuna remains fresh, even over long distances. With the new fleet of StarFreeze™ containers and support systems, Maersk can offer this solution anywhere in the world.

How has StarFreezeTM helped customers?

After years of continuous improvements in our super freezer technology, we rolled out StarFreeze™ to customers in late 2023. 

They have been successful in creating more value for our customers, helping them move tuna over thousands of kilometres without any loss of quality. This has helped them find more lucrative markets for their sought-after fish.

Customers have been pleased with the results and vow to utilise StarFreeze™ in future too.

The one-stop-shop solution for tuna


We’re committed to helping you with comprehensive support for tuna storage and transport. Whether you require a fully managed end-to-end cold chain or solutions customised to your needs, we’ve got you covered. Take a peek at a few of our services.

  • StarFreezeTM
  • Hypercare team
  • Booking services
  • Fishing vessel coordination
  • Stevedoring services
  • Shore crane services
  • Generator services
  • Stuffie solutions

What are the benefits of Maersk’s one-stop-shop cold chain solution?

Get access to cold chain specialists who are well-versed in best practices and protocols in cold cargo handling and safety. Ship the volumes you need with the larger StarFreeze TM containers, and the agility afforded by our integrated cold chain services.Monitor the temperature and humidity inside your container from start to finish with Captain Peter TM, our digital visibility assistant.Our cold chain specialists expedite customs clearances while anticipating and preparing for other regulatory requirements.Use our global logistics network to enter new markets and expand your business across the world. Reduce the cost of insurance significantly with the promise of consistent quality from end to end. If you want to know more about how our solutions can help your business, fill in the form below and a Maersk representative will get in touch with you soon.

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