FIELD: agriculture.
SUBSTANCE: invention relates to fishery. The method includes placement of a passive fishing tool at a largest depth during that time of the day, when the main mass of fish is available there. Upon daily migration of the main mass of fish the passive fishing tool is lifted. A hydroacoustic signal is emitted from a fishing vessel towards the passive fishing tool, and this signal synchronously actuates mechanical locks of underwater modules, releasing reserves of vertical working halliards, therefore depth of passive fishing tool location is reduced. Further changes of passive fishing tool location depth are carried out in a similar manner.
EFFECT: invention makes it possible to remotely many times lift a passive fishing tool in accordance with change of a horisation of main fish mass location.
1 tbl, 5 dwg
