Sunday, December 16, 2018

ROV mort removal: The remarkable Foover from UCO

by Mick Bower Divisional Director, Underwater Contracting, Scotland

Mick Bower has made a splash back into the aquaculture industry after leaving it almost 15 years ago to pursue senior diving roles in the oil and gas field.


With a wealth of knowledge from both industries, Mick has developed an innovative new system for fish farms – the Foover. Although he had the idea several years ago, Underwater Contracting (UCO) was launched last year and the Foover systems have since completed more than 20,000 dives in commercial operations around Scotland.
 


The ‘patent pending’ system consists of a remotely operated vehicle (ROV) with a collection cage attached, that when dropped into a fish pen, hoovers up dead fish. The collection unit can cram up to 750kg of fish into the cage which equates to around 150 large salmon. As well as having a large capacity, the Foover works very quickly. It takes one minute to plunge 30 meters into the depth of the pen, just three or four minutes to collect 150 morts, and another minute to return to the surface.

The sites where the system is currently operating report that the whole process takes no more than six minutes in total. Impressively, a 10-pen site in 25 meters of water with an average amount of morts, can be rendered 100 percent mort free with visual verification through the camera system in under 2.5 hours.

Customers are mainly using the Foover for mort removal; but once on site, they can really see the potential for other uses. This generally involves net inspections and the cleaning of cages and pipes leading back to the feed barge. The Foover is easily installed on-board typical workboats with deck space of less than three square metres and can be deployed and recovered from the pen using the workboat crane. It’s simple to control with a joystick from the wheelhouse of the boat, with a monitor that displays information from the ROV, whether it’s inside the pen or performing operations outside of it.

UCO maintain that at this stage the Foover doesn’t necessarily replace divers, but it does significantly reduce the amount of time personnel spend underwater. The traditional method carries inherent risks, while working for longer times and deeper depths, with no restrictions on the amount of diving undertaken. When Mick was a fish farm diver, the cages were 15-20 meters deep but now they are closer to 30 meters in the centre. Therefore, there is higher risk of decompression implications and diver illness adding to the risk of scuba diving in fish cages.

Read more HERE.

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