Acronym for 'oesterbroedinvanginstallatie', the Dutch word for a machinery, consisting of collectors where oyster larvae attach themselves to.
The Osprey group is an MSC certified fishery, fishing with twinrigs on plaice in the North Sea.
A technique whereby one ship pulls an assembly of two bottom trawl nets. With the help of rubber cables, a vibration is released on the seabed that scares fish. This is a lighter variant within the bottom trawl fishery and is also called twinrig/multirig.
With ottertrawls, a bottom otter trawl is held open in the width by two boards attached to the outer sides of the net. The net is pulled through the water, with the otters going through the bottom.
The outrig method is characterized by fishing with so-called 'outrig nets'. An outrig net is a lightly executed trawl, where the horizontal net opening is being realized using two fishing boards. Fishing boards are vertical, aerodynamic wings, which realize the lateral force through the water pressure and this opens the net.
A stock is overfished when the stock size has decreased so far that it can no longer produce a maximum sustainable yield. The size of the fish populations is insufficient to reproduce in the long term.
There is so much fish caught that the size of the stock has diminished so far that it can no longer produce a maximum sustainable yield. The size of the fish populations is insufficient to reproduce in the long term.