JW Fishers Mfg. Inc.

United States

JW Fishers acoustic pingers make it quick and easy to relocate an underwater site or piece of equipment. The pinger is attached to an underwater location where it continuously transmits a sonar signal. A diver equipped with a pinger receiver can detect the acoustic signal and follow it directly to the pinger. Pingers are available with different transmit frequencies so several can be deployed in the same general area without interfering with each other. The diver sets the pinger receiver to the desired frequency and is guided directly to the pinger.

Fisher's depressor wing for deep water towing JW Fishers DDW-1 Deep Dive Wing is a low cost depressor wing designed to tow instrument packages at deeper depths. Operating on the principle of hydrodynamic depression rather than just weight, depressor wings overcome the limitations of conventional downrigger systems. The DDW-1 Deep Dive Wing provides a stable platform for towing instrument packages to greater depths with less cable being deployed.

JW Fishers Search Team hat - a black baseball cap with an adjustable headband and gold embroidered logo. A hat is included free with the purchase of any JW Fisher search system or can be purchased separately for $15 plus postage and handling.

Side scan sonar is one of the most effective tools for underwater exploration because it can search a large area quickly and produce a detailed picture of anything on the bottom, regardless of water clarity. When looking at a side scan image it appears as if the water has been removed and the operator is getting an unobstructed view of the ocean floor, lake bottom, or river bed. High resolution images are sent from the towfish to a topside computer (included with the system) for display and storage. An optional Splash-proof computer is available for small, open boat operations. Fishers SONAR VIEW software gives the operator complete control over the systems operating parameters. Choose between 10 different scan ranges and 8 color schemes to display images. Connect a GPS and position coordinates are automatically captured with the side scan data. Point the mouse on a target and the GPS position coordinates for the target are displayed on the screen.

The PT-1 is a sensitive, pinpointing magnetometer. It works equally well on land, and in fresh or salt water. The PT-1 was specifically designed to locate and track iron and steel pipelines and armored cables, but it will also detect all ferrous (ironsteel) targets buried under any kind of material, including concrete, with no loss in detection range.

JW Fishers acoustic pingers make it quick and easy to relocate an underwater site or piece of equipment. The pinger is attached to an underwater location where it continuously transmits a sonar signal. A diver equipped with a pinger receiver can detect the acoustic signal and follow it directly to the pinger. Pingers are available with different transmit frequencies so several can be deployed in the same general area without interfering with each other. The diver sets the pinger receiver to the desired frequency and is guided directly to the pinger.