A device that prevents the loss of catch from a trawl designed to work on a small vessel

Improving the technology and design of fishing gear for fishing aquatic biological resources by small vessels is of practical importance in the development of fishing in inland waters and coastal areas with shallow depths, as well as in regions where shallowing of reservoirs is observed. The development of aquatic biological resources in the shallow part of the reservoir is especially important for the delta part of the Volga River and coastal areas of the Caspian Sea in connection with the shallowing of fishing areas and a drop in sea level. The organization of fishing at shallow depths and coastal areas is possible not only with stationary fishing gear (traps, set seines), but also with trawling fishing gear. One of the most serious problems in the development of trawl fishing by small vessels is the imperfection of the trawl design due to loss of catch both during trawling and when lifting the catch on board the vessel. The improvement of the design or adaptation of existing fishing gear for use for industrial fishing purposes in the organization of fishing by small vessels makes it possible to catch fishing objects not only in the form of clusters, but also shoals of fish distributed throughout the reservoir with a low concentration. Some observations of the effectiveness of fishing with the hand-held delirium of amateur fishermen show that fishing with relatively small trawls towed at a speed of 0.3-0.8 m/s in shallow water along the coast may be a promising direction for the development of fishing carried out by motorboats. To meet the needs of industrial fishing in the Astrakhan region, which is mainly produced by small vessels represented by boats with outboard motors, the idea of using a trawl as a fishing tool is being developed, which is planned to be designed taking into account the characteristics of shallow water. Due to the alleged certain features, which include the inability to sample the trawl through the stern due to the transom arrangement of the outboard motor, as well as sampling the trawl during the movement of the vessel for the reason that there are no trawl winches and lifting the trawl with the catch to the deck is carried out manually from the side when the vessel is completely stopped or towed to shore to drain the catch, A device is proposed that will prevent the fish from leaving the trawl in the absence of towing.