Chapter 1871

Purse seine fishing is a technical work, which can not be done by hard pulling. The two fishing boats move slowly on the sea and gently control the fishing net to swing with the undercurrent. They don't encircle for a long time, waiting for the command of Qin Shiou.

Two old fishermen, Zach and alder, are driving the fishing boat. They have made the right choice. They use tacit cooperation to drive the fishing net to rotate. In this way, even if they can't surround the fishing net, they won't let the inward fish escape.

Qin Shiou frowned and looked at the front thinking hard. Zhong Dajun didn't dare to disturb him, so he whispered to Mao Weilong, "what's the matter? Do you know what to do now? "

Mao Weilong scratched his head and said, "I don't understand. I'm a farmer. I only know a little about crops and animals. I'm not sure about the sea."

Hearing what they said, Qin Shiou turned back with a smile and said, "OK, just ask me. I'm not in the college entrance examination. It doesn't matter to chat casually. There are two main ways to close the purse seine. One is mainly around and the other is mainly Zhang. I have to think about which way to close the net. "

In winter fishing, the main operation mode is Zhang. Keep the direction of the net opening to the fishing object according to the wind direction, flow direction and the trend of the fishing object, drag it slowly for half an hour, keep the net fully extended, surround all the fish and close the net.

But now the wind direction and flow direction are unfavorable to their net collection, so this method can't be used. Qin Shiou thought about it and commanded the two fishing boats to fish in another operation mode, which requires more gasoline and manpower, but it is more secure.

Qin Shiou kept issuing orders on the radio. The following two ships set up a main ship and an auxiliary ship again. The horsepower of the two ships was similar. Zach's ship had a wider bottom and stronger ability to resist waves, so his ship became the main ship, and Alde's ship had better flexibility and became an auxiliary ship.

At Zach's command, the fishermen on the ship began to cooperate. They fixed the nets on the starboard deck. Someone specially watched. If the fishing net stretched and deformed badly, he had to relax the fishing net to prevent it from breaking.

At this time, the upper and lower dimensions of the purse seine are fully unfolded, the right net wing is in front and the left net wing is behind, the main ship anchors and stops, and the auxiliary ship makes the starboard side face the main ship, and then rotates while retracting the net.

Qin Shiou monitored the combination of fishing nets in the water through the Sea God consciousness. When he reached the sea area where the current velocity was relatively light, he ordered to start collecting the nets.

At this time, the main and auxiliary ships gradually approached, and the two ships met on the port side. The auxiliary ship handed the towing, supporting and shipping vessels to the main ship, adjusted the ship's position, and turned to pull the wings on both sides with the main ship.

There are winches on both ships. As the winch rotates, the wire rope drags the fishing net and begins to close.

The melon princess is far away. Mao Weilong and Zhong Dajun can't see the situation on the two ships clearly. They don't understand why the fishermen around are serious.

Qin Shiou immediately explained to them that bluefin tuna is a big fish full of wildness. They can grow to three or four meters long, because their body shape is a bomb. If they rush, the impact is really like a bomb. If the net is not collected well, they may tear up the fishing net.

Zhong Dajun couldn't believe it. He pointed to the fishing net and said, "shit, is this fish so strong? I think the net rope of the fishing net is as thick as my thumb. Even a car can catch it? "

Qin Shiou said, "if it's only one impact, the fishing net is not afraid, but once bluefin tuna goes crazy, they will impact continuously. If the impact force is superimposed, it will be more destructive to the fishing net. "

In this case, the closing direction of the purse seine does not need to keep the mesh opening and flow direction consistent. During the closing process, the two ships will drag the fishing net downstream for a period of time, make the nets fully open with the help of the tide, increase the living space of the fish group, and try not to make the bluefin tuna feel panic.

The three ships took almost all the fishermen to sea, and more than 50 people participated in the fishing operation. Among them, Zach and alder took five people to lower and close the net respectively, and the rest were all on the melon princess.

They are fully equipped, just like soldiers waiting for the day. At the command, the whole army will attack!

The order they were waiting for was to prepare for longline fishing.

When the two ships began to take in their nets, they left the sea area along the current, and there were some escaped fish around. They relied on longline fishing to catch these fish.

Qin Shiou waved, the fishermen sorted out the winding trunk lines on the stern, and they began to work.

Longline fishing is the most important operation mode of fishing tackle, with the widest distribution, the highest quantity and output. This thing is to tie many equidistant branches to a main line, with fishing hooks and bait at the end. It is laid on the surface, middle and bottom layer by using floating and sink devices, and a series of fish hooks are connected below to attract fish to hook.

The setting out direction is preferably cross current or oblique current. Generally speaking, tuna like to feed against the current. In this way, the setting out direction is perpendicular to the current direction, which can better attract tuna.

Longline fishing is also a very manpower testing fishing method. A trunk line is often five or six kilometers long or even longer. For example, the trunk line on the melon princess is eight kilometers long, and there is a branch line ten meters away. Personnel need to hang hooks and bait on the connected branch line.

In other words, there are 800 branch lines on a trunk line. There are two hooks in front of and behind a branch line. A total of 1600 hooks and bait have to be hung. This workload is quite large!

However, this work must be carried out on site. It is impossible to hang hooks on the line in advance. The eight kilometer long trunk line can't be coiled at all. Once coiled together, it will cause rope entanglement, which can't be untied at that time.

The melon Princess advanced at a constant speed of six knots. The fishermen worked quickly at the stern, like a production line. When the main line fell into the sea, they had to hang hooks and bait on the branch line before falling into the water, otherwise they would waste the resources of this rope.

In addition to the hook and bait, someone is responsible for adding and hanging floating balls. There is a branch line every ten meters, and two floating balls are added every five branch lines to maintain buoyancy. Every time a floating ball is installed twice, a pressure alarm shall be installed.

This alarm is the most important. When the fish are hooked, they will pull the branch line to sink. When the alarm feels the pressure change, it will flash a dazzling light, so that the fisherman can timely find the fish hooked and catch them.

Tuna is fierce and fierce. If they can't catch them in time after they are hooked, these guys will try to escape. Even if they don't escape, they will struggle frantically and entangle the main line. Once the hooks become entangled, it will add a lot of labor to the fishermen.

Twenty fishermen are divided into two groups, one working and the other resting. They are like mechanical arms on the assembly line, skillfully and accurately hanging hooks, baits, floats and alarms on the rope.