NZ King Salmon tri­als sub­mersible pens

Fish Farmer - - World News -

NEW Zealand King Salmon is to launch a project in­ves­ti­gat­ing the po­ten­tial of sub­mersible salmon farms.

The pilot, in around 1,700 ha in Cook Strait, will take about a year and is be­ing sup­ported by the Cawthron In­sti­tute and Blue Planet Ma­rine.

The un­der­wa­ter pens are based on Nor­we­gian tech­nol­ogy, NZ King Salmon chief ex­ec­u­tive Grant Rose­warne told lo­cal news agen­cies.

Six mon­i­tor­ing buoys will mea­sure tem­per­a­ture, cur­rent, sound and other char­ac­ter­is­tics, and hy­drophones will mon­i­tor whales and dol­phins.

The data col­lected from the re­search project would partly de­ter­mine how many farms would be built within the area, as would the cur­rent strength and other fac­tors.

In July, Rose­warne es­ti­mated that 100 ex­tra pens in Cook Strait, over 80ha, and with each hold­ing 1,000 tonnes, could lift the com­pany’s an­nual rev­enue from $136 mil­lion to $2.5 bil­lion.

He said the tech­nol­ogy com­ing out of Nor­way was de­signed to go into the open ocean in the North Sea, tak­ing on the harsh con­di­tions with steel.

‘They have quite a big struc­ture above wa­ter but ours would only have a few buoys above wa­ter and you would have a boat come in to tend and feed the fish.’

Above: Salmon could be reared in sub­mersible pens

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