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Chapter 1870 1838. Can¡¯t close the door

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    To catch this fish group, Qin Shiou chose to use a two-boat bagless seine fishing method, and then supplemented it with longline fishing at the back. After listening to his order, Shaq, Sea Monster and others nodded, saying that this was very suitable.

    The English name of two-boat purse-less seine fishing is two-boat-purse-seine-fishing, which is referred to as two-boat purse seine fishing. It once left a glorious page in the history of world ocean fishing.

    In modern times, this technology was developed by Japan, Europe and the United States, but in fact, this method was created by Chinese fishermen as early as the mid-17th century. At that time, many fleets along the coast of Guangdong Province in China used this method to fish. However, due to the maneuverability of the ships at that time,  It was not efficient enough and was not as convenient and safe as a single-ship motorized seine, so it was eliminated.

    Later, in 1837, the United States began to trial the use of two-boat seine nets to catch herring off the coast of Maine. After the success, a two-boat seine fishery for herring was gradually formed on the east coast with a steam engine fishing boat as the mother ship. One mother ship took two boats to release herring.  Net boat operations.  By 1900, the twin-boat seine fishing technique was introduced to the coasts of Europe and then to Japan, where it became completely popular around the world.

    Compared with single-vessel trawl fishing, this method is more efficient, but it is more laborious to use. At the very least, it requires two fishing boats with the same performance to use long belt-shaped seine nets to collect fish, and it is best to have one  The mother ship centering order means that three ships are required, two of which are independent operation ships and one is the mother ship.

    Qin Shiou made preparations in advance. He used the Princess as the mother ship and drove two purse seine ships of the same size from the town to carry out independent operations. The three ships were deployed at sea, like an aircraft carrier fighting with a destroyer. The scene was  It's very exciting.

    It was the first time for Zhong Dajun and Mao Weilong to experience such an occasion. They followed Qin Shiou for a patrol at the stern of the ship. Then Qin Shiou entered the cockpit and used a telescope to command the net launch with a wireless intercom. The two also followed back to the cockpit to watch this scene.

    Shaq took Bull and several other strong fishermen into the water in a small boat and deployed a series of strong light fixtures on the sea. Deep-sea fish are phototropic. To concentrate them, not only did the sperm whales need to be driven away, but also strong  Light lures them to the upper waters.

    Before the fisheries ministries of European and American countries introduced fishing restriction policies, the double-boat seine fishing method once dominated the Atlantic fishing industry, such as mackerel, anchovy, herring, sardines and tuna, etc., which were almost all caught using this method.

    The reason why bluefin tuna has been caught almost extinct is also the reason for this fishing technology.

    Qin Shiou used Poseidon consciousness to accurately locate the moving position of the fish school, and then ordered two independent operating boats to move slowly and put the seine net into the water.

    The two independent operating boats are ordinary small fishing boats, about 14 meters long and 3.5 meters wide. The main engine is an 80-kilowatt gasoline engine and has good maneuverability.  The boat is equipped with a winch and a power pulley, which are specially used for lowering the net. In fact, there are also professional vertical fish finders and locators on the boat, but these machines cannot be used if Qin Shiou is commanding them.

    With modern technology so advanced, captains of large fishing vessels can still get high salaries. Why?  The reason is that these captains are very good at finding catches and arranging nets. Their eyes and experience are often more useful than fish finders, and are even more helpful to large fishing boats.

    Under Qin Shiou¡¯s command, the key task of fishing this time began, which was to set up the net.

    Two independent operating boats moved slowly but flexibly on the sea, and an extra-long seine was pulled open.  This seine net has a total length of 2,500 feet, or more than 760 meters. It is the largest seine net and is specially used to catch tuna.

    The sea monster in the cab saw the slowly unfolding extra-long seine net. He showed a nostalgic expression on his face and said: "Snow, how long have you not seen this damn double-eyed giant? Oh, Snow, Snow, since  After the ban on tuna fishing in the Gulf of St. Lawrence, I thought I would never see this two-eyed giant again, but I didn¡¯t expect that I would be lucky enough to meet this old guy today. I¡¯m so lucky!¡±

    The double-eyed giant is the nickname of the oversized seine. Fishermen want to call it this because the wings of this net are very long and symmetrical, which can be compared to two big eyes on a human face.

    The corresponding one is the Cyclops, which is the independent trawl.  Fishermen give their tools all sorts of nicknames, like gangster gangsters, with a lot of cuts, code words, slang and the like.

    Collect from the two wings to the middle, that is the position of the net bag. The net bag of the double fence is wide and short. When the net is straightened and stretched, it is about 120 meters long. Its upper and lower edges are equipped with edge nets and  The upper and lower rails are attached with floats made of small leather balls, while the lower edge and lower rails are tied with plumb bobs.

    In this way, when the two wings of the seine are opened, they are connected to the drag frame through the upper and lower forks, and the middle part of the net mouth is equipped with a triangle.The float floated up, the lead sank down, and a dragnet was opened.

    Driven by the big whales, the bluefin tuna swam toward the water in panic. There was a strong light flashing on the water. In fact, this light did not attract all the tuna, but only a part of the fish.  Tuna has a strong tendency to follow the herd. If a fish attracted by strong light swims toward the water, other fish will follow.

    The seine was unfolded, and Qin Shiou used his Poseidon consciousness to observe the swimming of the bluefin tuna. They were swimming from the deep sea to the surface, so the formation was a straight up and down arrangement, not the usual parallel arrangement of the fish to pull the team together.  Stretched very long.

    Looking down from above, Poseidon Consciousness feels that the current distribution shape of the fish school is similar to a cylinder. Of course, it is not very regular. Some fish are too frightened and still flee to the surroundings.

    These fish will be the fish that slipped through the net. Qin Shiou will ignore them for now. Later, he will arrange longline fishing to specifically deal with the fish that slipped through the net. What he needs to do now is to seine the fish and harvest the big fish!

    When the entire school of fish entered the sea area controlled by the fishing nets, Qin Shiou snapped his fingers and said to the intercom: "Okay, guys, get ready to close the door and welcome a good harvest!"

    In addition to the lead pendant, the lower part of the seine net is also equipped with a bottom ring. As long as the net is closed, it can be controlled to settle quickly and close the bottom of the net ring.

    The bottom ring sealing work was proceeding normally, but it was more difficult to close the fishing net from top to bottom. The driver of a ship shouted: "Boss, no, the current is too strong and the net is swinging too much!"  "

    The operation method of double-boat purse seine is easily restricted by the undercurrent, wind current and tidal current of the fishing ground. First, the fishing boats operating independently are smaller and the speed is slower. Second, the fishing net is too large. Although it is mainly a hollow hole, the net wire is also very small.  It is thick, and the impact force of the sea current is also very strong. In addition, the tuna trapped inside are so strong and strong that if you are not careful, the fishing net will be torn into pieces!  (Remember the website address: www.hlnovel.com
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