JW Fishers DDW-1 Deep Dive Wing is a low-cost depressor wing designed to tow oceanographic instruments. Operating on the principle of hydrodynamic depression rather than just weight, depressor wings overcome conventional downrigger systems’ limitations. The DDW-1 Deep Dive Wing provides a stable platform for towing instrument packages to greater depths using less cable.
The design of DDW-1 creates a significant downward force that overcomes drag and pulls the tow cable downward as the wing moves through the water. The “dive angle” is determined by the tow point’s position on the wing, which is operator adjustable. Larger instrument packages have more drag and require a greater dive angle. Changing the tow point allows different size instrument packages to be towed to the required depth.
The DDW-1 tows standard instruments such as side-scan sonars, towed video systems, marine magnetometers, and towed under-water metal detectors. The DDW-1 can tow magnetometers because it does not use ferrous metals in its construction and therefore has no magnetic signature.
The DDW-1 is constructed of corrosion-proof PVC, urethane, and stainless steel for many years of trouble-free operation.