. Commercial fisheries review. Fisheries; Fish trade. 62 COMMERCIAL FISHERIES REVIEW Vol. lA, No. 10 is a source of anxiety for future seasons, and contributes to the present serious crisis facing the fishing and canning industry in that countryo German Federal Republic ELECTRICAL-FISHING EXPERIMENTS IN SALT WATER REPORTED SUCCESSFUL: The much- discussed electrical fishing equipment developed by Dr. Konrad Kreutzer in Ham- burg, Germany, was seen by the author on June 3, and the experimental work done to date was discussed with Mr. Ho Peglow,, Peglow has been associated with Kreutzer in develo
. Commercial fisheries review. Fisheries; Fish trade. 62 COMMERCIAL FISHERIES REVIEW Vol. lA, No. 10 is a source of anxiety for future seasons, and contributes to the present serious crisis facing the fishing and canning industry in that countryo German Federal Republic ELECTRICAL-FISHING EXPERIMENTS IN SALT WATER REPORTED SUCCESSFUL: The much- discussed electrical fishing equipment developed by Dr. Konrad Kreutzer in Ham- burg, Germany, was seen by the author on June 3, and the experimental work done to date was discussed with Mr. Ho Peglow,, Peglow has been associated with Kreutzer in developing the equipment and in carrying out the experiments. Two small units and one large unit have been developed. One of the small units is for use in fresh water and the other for use in stunning tuna or other large fish after they have taken a hook. The large unit is that used on the ves- sel R-96 for experimental use in salt water. In all three units, power is conserved by using a pulsating direct current with a very high amperage peak. The duration of the discharge of current is ex- tremely short and the period between pulses is much longer than the duration of. AN artist's conception of how electrical-fishing experiments were conducted at sea. the discharge. The controlling switches are designed in such a manner that they do not carry any current at the time that the switch is opening or closing. This prevents the usual burning of the contact points and allows the use of very small switches for the size of the current carried. The fresh-water unit is designed to operate from 24-volt storage batteries and weighs about 2k pounds without the batteries. It is capable of putting out 120 amperes and is supposed to be able to cover an area 30 meters in diameter. A number of these units have been manufactured and sold to various European govern- ment agencies and research institutions. The unit is said to be selective as to the size of fish, with larger fish responding to the curren
Size: 2198px × 1137px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, booksubjectfisheries, booksubjectfishtrade
