Nets

These are nets that will usually encompass the entire “cage system” around the outside and underneath to protect the grower nets and the stock within from large predators such as seals and sea lions.

This larger mesh net can be seen in this photo hanging down from the corner of a 14-cage system along the outside corner of the walkway.

Barge Tarps are smaller than plankton tarps and are used to wrap the entire underside of a floating structure usually once it arrives at a new site. By wrapping it tightly and pumping out as much water as possible the living organisms will soon die of oxygen starvation and begin to rot and fall away from the barges hull. After a few weeks the tarp can be removed and the rotted dead fouling can be allowed to fall away and then the bottom of this float is effectively disinfected of organisms from another site that may possibly have harboured harmful pathogens or a virus that could otherwise cause problems to the new stock grown at this new site.

Shark Guards:

We also make large 1.2m – 1.8m diameter steel rings with mesh bags and lifting bridles attached that are used to recover morts from the bottoms of net pens without the use of a diver. Through special rigging of ropes and sometimes weights the job of Mort Recovery can be accomplished from the surface by hand or with the help of a mechanical capstan winch.

Sometimes a special recessed “Pit” in the center of the bottom of a net can aid in the placement of this ring and to ensure all morts are collected even when there is considerable tidal action. We can retrofit a “Pit” into any existing net and the same feature can also accommodate and automatic Lift-Up™ Mort recover System as well.

Large Mort Recovery Ring Before Deepening:

After Deepening:

These also are kept in stock complete and ready to go usually and are an 18” diameter mild steel ring with a handle along one side and usually a Smolt-Mesh bag sewn into it.

For bio-security reasons it is common to have one of these nets for every netpen that you are growing fish in as divers will use this ring to recover dead fish that may have collected on the bottom of that particular net and then that Mort recovery Ring will stay with that net even though it gets disinfected after every use. This is a double protection to ensure there is no cross contamination if a problem arises in one pen it will not be transferred to the other by using the same Mort Recovery Ring. In keeping with this theme the diver and all his gear is thoroughly sprayed down with disinfectant as well before they even move on to the next net.

These are DIVER mort recovery rings with mesh bag. Divers will recover morts from each pen with one of these and there will be one for each net so there is no spread of disease between pens.

We make Dip-Nets for use in larger nets or tanks to the mesh specs and depth that you desire. We keep a stock of circular stainless steel heads on hand to be able to mount the mesh bag of your choice onto it. This completed Dip-Net Head in turn can be mounted commonly onto an aluminum “Pike Type” pole handle of the length that you chose as well.

Our heads are “Supported” with a second attachment point or brace that extends up the handle and is securely bolted in place once the approx 10 cm lag screw at the edge of the hoop has been screwed into the base of the handle. The actual “Hoop” opening is 16” – 18” diameter and this is capable of catching up to 20+ lb fish.