Length: 1210mm
Width: 590mm
Height: 700mm
Weight: 290kg


Trial details:

Ice machines

Trial 1

Trial 2

Trial 3

Trial 4

Trial 5

Trial 6

Follow-up project


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Industrial ice-making machines:

  • Pelagic fishing vessels

  • White-fish vessels

  • Poultry & beef transportation

System information | Case study | Applications | Example installations | S16 Slurry Ice System

Trial 5 Pre-cooling of fish in the fish hopper.

The main decision to install the liquid ice machine onboard the Challenge II UL33 was to enable the fish to be chilled immediately after they are taken onboard. This is important in the summer months when the temperature of the sea can rise to approximately 18C. It was decided to run a preliminary trial for assistance in future project work.

As the fish hopper isnt fully watertight it was decided to use the liquid-ice after the fish had been emptied into the reception hopper. The liquid-ice was applied immediately after the fish had been released from the cod-end. Due to small tank restrictions only a small part of the hopper was covered with the liquid-ice.

The liquid-ice was left in the reception hopper for approximately 30 minutes while the crew prepared the nets for the next fishing operation. A number of temperatures were taken from a variety of fish once the crew had started to work the fish handling system. It became evident, from the temperature checks, that only a small section of fish had been in contact with the liquid-ice. Temperature checks ranged from 9C, the sea temperature, to -1.6C. The fish which had been in contact with the liquid-ice had dropped in temperature dramatically and initial signs of freezing had appeared on a small number of fish.

The Master of Challenge II UL33, utilises this method in the summer months. There are plans for a larger tank to be installed onboard the vessel, so that a large proportion of the liquid-ice in the tank can be applied to the reception hopper, prior to hauling. The best results of liquid-ice in the reception hopper will be evaluated in a further trip onboard to establish whether the reception hopper should be filled prior to the fish coming onboard, or whether the liquid-ice should be applied to the fish once the cod-end has been emptied.






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