At Brim farm, fish health is at the core of every solution we develop. From the start, a major goal has been to create the gentlest possible fish handling systems — and that’s exactly why we designed a unique bottom unloading method.
During unloading, the fish tank remains completely filled to ensure a continuous flow of fresh, oxygen-rich seawater, safeguarding fish welfare throughout the entire process.
Here’s how it works:
A constriction system (Fig. 1) is gently lowered into the tank at a controlled speed of approximately 30-40 centimeters per minute, gradually reducing the swimming space in a stress-free way. The tank’s central outlet — a black-painted chute integrated into the center column — appears as a natural escape route for the fish as the density increases (Fig.2).
Then, the fish swim and flow into a twin-pipe system, embedded within the concrete base plate, and the fish is routed through one of the tank’s cells to the deck-level unloading connection.
Thanks to this innovative design, Brim farm can achieve an unloading capacity of up to 500 tonnes per hour — meaning an offload to a typical size life fish carrier can be completed in less than 1 hour.
The result?
A faster, safer, and significantly gentler unloading process — setting a new standard for fish welfare in modern aquaculture.
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