14.02.2022 | New highlight
For months now, we have been working hard to build the hatchery as part of the project 'Sea farm on land', financed by the Wadden Fund. This happens at the breeding centre of our knowledge partner Blue Linked in Hazerswoude-dorp. The outgrowth facility for the farmed fish will be on Texel; another mega job that we will start as soon as the hatchery is operational

Today, a literal highlight: floating through the air, supported by sturdy straps, enormous breeding tanks are carefully hoisted from the lorry and placed in front of the hatchery. But how does this story continue?
Finishing the floor in the new climate room. Arrival of the breeding tanks at the hatchery in Hazerswoude-dorp. Piloting a breeding tank inside, hanging from straps.

'I can smell the sea!'

In September last year we showed the climate chamber under construction. In the meantime, the electricity has been installed and the floor has been given a protective layer that is resistant to seawater (photo left). It doesn't all happen very quickly, because in Corona's time the circumstances regularly demand creative solutions. Suppliers have to deal with sick employees and the demand for materials creates scarcity and higher prices. But at the Oceans at Work Foundation we like a challenge and we notice how our students learn from it.

Today the breeding tanks were delivered (photo centre), which is quite an experience for the Kemeling Kunststoffen employee. 'I smell the sea', he says enthusiastically after he has parked the truck in front of Blue Linked's hatchery in Hazerswoude-dorp. 'As far as I know, we have never delivered material at Kemeling for fish breeding.'

Hanging from straps, the breeding tanks are gradually brought into the hatchery (picture on the right). The containers are 10.5 metres long and almost 1.3 metres wide. Entering via the open roller shutter is a piece of cake. The real fitting and measuring comes after that.
Top view of the inside of a breeding tank. Hovercraft' device, used to get the breeding tanks in place, without damaging the floor. From left to right: Nico Leeuwestein (NL+Engineering), Tim van Veenendaal (Blue Linked), Michaël Laterveer (Blue Linked, co-founder of the Oceans at Work Foundation), interns Alae-Edine, Nima and Max.

Hovercraft' device

In the entrance hall of the climate room (photo left), there is enough space to manoeuvre the tanks one by one into the right position. But the trolleys must remain at the boundary of the climate chamber in order not to damage the new floor. So how do you transport a breeding tank of over 500 kg to its final destination?

This is done by using a 'hovercraft' device (photo in the middle): a plate with a rubber band through which air can escape via two holes. By placing the plates with the rubber band downwards under the breeding tank and connecting them to a generator, a wafer-thin layer of air is created between the floor and the tank as a 'carrier'. By joint agreement (photo right), the generators are placed in the breeding tank so that air can continue to be supplied to the 'hovercraft' devices during transport. It works perfectly.
Little by little, the breeding tank is moved into the climate room. With care, the right turn is made to guide the breeding tank between the doorposts. With the breeding tank in place against the wall, it is a matter of concern: will the tank that is to come next to it fit between the palaces?

Fitting and measuring

Bit by bit, the breeding tank is wheeled into the climate room (photo left). The tank itself fits perfectly through the door (centre photo), but because there are poles in the climate room, it has to be carefully fitted and measured to get it into place. A total of four containers will be placed in the climate room, two of which are intended for the 'Sea farm on land' project.

The tanks along the walls are in place in a short time (photo on the right). But whether this will also be the case for the third tank that is being wheeled in... The photo below might give you an idea. And we leave you in suspense whether everything will fall into place. Let's wait for the next news item.
And then the cliffhanger: on paper it all seemed to fit. But in practice ...?
The special tanks for circular fish breeding were designed by Blue Linked in collaboration with NL+Engineering and custom-made by the firm Kemeling Kunststoffen from Naaldwijk.