. Commercial fisheries review. Fisheries; Fish trade. 40 underwater light, we found the latter to be far more effective in attracting herring. For some purposes, underwater light gear need not be expensive. In our field tests, we used a globe-type, 250-watt light bulb in a watertight socket, weighted so it would sink (photo p. 38). A 300-watt portable generator. suspended from aloft or set on a cushion to minimize vibration, provided power. The light circuit was connected to the generator through a control panel containing fuses and a dimmer. As the wattage rating or number of lights increases
. Commercial fisheries review. Fisheries; Fish trade. 40 underwater light, we found the latter to be far more effective in attracting herring. For some purposes, underwater light gear need not be expensive. In our field tests, we used a globe-type, 250-watt light bulb in a watertight socket, weighted so it would sink (photo p. 38). A 300-watt portable generator. suspended from aloft or set on a cushion to minimize vibration, provided power. The light circuit was connected to the generator through a control panel containing fuses and a dimmer. As the wattage rating or number of lights increases, or for illumination at greater depths, more rugged and expensive equipment would be necessary. ttt-i4. Dip netUny at a Uylu altractioii sLaUon aboard Uie BCF vese vessel 'Oregon.' (Photo: T. Ivvanioio). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. National Marine Fisheries Service; U. S. Fish and Wildlife Service; United States. Bureau of Commericial Fisheries. [Washington] : National Marine Fisheries Service; [for sale by the Supt. of Docs. , U. S. Govt. Print. Off. ]
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