A tuna purse seine boat of more than 70 meters has a catch of 2,000 tons a year.

Chen Yuan didn't think it was too much, but felt that it was too little.

Chen Yuan had seen a report before, saying that it was a 105-meter tuna purse seine boat with a refrigeration capacity of about 3,000 tons of fresh fish.

"More than 2,000 tons a year, that's too little." Zhou Shengdao.

"Quite a few." Zhou Jianguo said, "It's not the same time it used to be. In the past, it was easy to fish on the high seas, but now when you fish for tuna on the high seas, you need to buy quotas in many areas. Besides, it's not all at sea for a year."

Chen Yuan sighed and said, "How much does a tuna purse seine boat cost more than 80 meters?"

"It depends. The cheap ones are seventy or eighty million, and the better ones are 150 million, 200 million, or even 300 million. Hull construction, hull strength, onboard equipment, machinery, etc., it is normal for a ship of the same length to have a price difference of double or even several times. If you want to build a large tuna purse seine vessel, it is best to have a large refrigeration auxiliary vessel, which saves time and increases the operation time of the purse seine vessel."

Large refrigeration auxiliary vessels are also not cheap, and depending on the configuration, they should be about the same price as purse seine vessels, or even more expensive.

"I heard that there is a quota for building new distant-water fishing vessels?" Chen Yuan asked.

Zhou Jianguo nodded: "It's not a quota, it's a license, but these are easy to solve." When you place an order at the shipyard, as long as the money is in place, the shipyard will help you solve all the formalities you need."

The issue of formalities is arguably the least problematic issue.

"It's a bit far away to talk about this now." Zhou Sheng said: "We are now a longline fishing boat, and there are many bonito, so how to catch tuna is a difficult problem."

"How many fishing boats do you have now?" Zhou Jianguo asked.

"6 of a kind."

"How many auxiliary boats are there?"

"Four."

Zhou Jianguo thought for a while and said, "You can set up a dense formation."

"It's too much trouble. I, Lao Gao, Lao Zhao, the dry rope on several of our boats is a whole rope, and one rope is more than 100,000 meters." Chen Yuan said.

"Cut." Zhou Jianguo said.

"We don't have enough sensors on board."

"Looking for Lao Luo, they have a lot of small sensors on their boat, and there are also simple fish scouts. If you want to get rich, you have to play a hand, and at this time, the tuna will come here."

"What is your opinion about the tuna coming from?"

"Northwest." Zhou Jianguo said, "However, there are many fishing boats in the northwest, and if you go over now, it is estimated that you will not be able to occupy a good position.

"Northeast then." Chen Yuan said: "If you want to form a formation, then you have to make big fish. However, we have too few auxiliary boats, 4 auxiliary boats, plus our big white, there are only 5 in total, which is not enough."

"Enough. If you want to form a formation, do you float enough?"

Chen Yuan shook his head: "What about the fish collector you made before."

"On board." Zhou Jianguo said with a smile: "Those things have been reported to the company, and you have to exchange them back when you run out."

"Okay."

Zhou Sheng listened to it with a confused face, and asked, "What is the Phalanx?"

Zhou Jianguo smiled: "Young people are still young, and they don't know much about it."

….

"What do you mean? How?" Zhou Sheng looked curious.

"It's a fishing method for the flood season." Chen Yuan explained to Zhou Sheng.

Longline fishing has sinking bottom, drifting, semi-sinking, and according to the shape of the rope, it is divided into a long snake array, a U-shaped array, an N-shaped array, a starlight array, a coiled snake array and so on.

The snake formation is to coil the rope into the shape of a mosquito coil.

The astral array is a rope in the shape of a polygonal star, and a fish collection device is placed in the middle. The Starlight Array is most suitable for small boat operations, such as Zhang Hang and Rupee's fishing boats, which can set up the Starlight Array......

As for the Phalanx,

As the name suggests, it is a very dense form. This method is also known as rogue fishing.

The phalanx is suitable for the fishing season and requires multiple longline fishing vessels to complete the arrangement.

Instead of putting more hooks, the phalanx is arranged with an oversized artificial fish collection device. However, this artificial fish collection device does not violate the regulations of the local fishing industry......

Longline fishing has pontoons, which simply means that everyone's rope is closer and more pontoons are hung.

For tuna longline fishing, the length of a dry rope is more than 100,000 meters. If it is a small float, it is usually hung up in tens of meters, and if it is a large float, it is hung in hundreds or even thousands of meters.

If you want to use a float to make the effect of a fish collector, then hang one for more than ten or twenty meters. And this area is going to be big, big...... The area of the float-dense area can be a few square kilometers, or even more than a dozen square kilometers.

However, in terms of actual square kilometers, the number of floats required is too much. It's hard to complete......

This dense sea float is an artificial fish trapping device. It's like there are more fish around the fishing raft than there are fish outside.

"A few square kilometers, or even a dozen square kilometers of dense floats?" Zhou Sheng took a deep breath: "However, the rope in the float area needs to be collected regularly?"

"Young man, you don't understand it at all." Chen Yuan laughed and looked at Zhou Jianguo.

Zhou Jianguo also smiled, touched his chin, looked at Zhou Sheng, and then at Chen Yuan, and said with a smile: "This young man really doesn't understand."

"Put fewer hooks in the pontoon area and put sensors near the hooks. As soon as the fish is hit, the sensor receives the signal and sends an auxiliary boat to pick up the fish." Chen Yuan said, "As for the fishing boats, they put hooks around the Phalanx...... When the fish gather, over time, the fish in the phalanx will gather more and more. As a result, there is no fish in a large area of the surrounding sea, which is the core of rogue fishing. If you catch the fishing flood, you think about how many fish can be gathered in a few square kilometres."

There are many fee-charging fishing farms, and there is a charge for placing artificial fish collection devices. In general, artificial fish collection devices are not particularly large......

A fish gathering area of several square kilometers, or even a dozen square kilometers, is very exaggerated to think about.

On the surface of the sea, there are floating debris, and it is easy to gather fish. This is because the floaters give the fish a sense of security.

The small fish come, and the big fish will follow. The more small fish, the more big fish.

When a dense pontoon area of several square kilometers is laid out, it attracts a large number of fish.

Zhou Sheng thought for a while and said, "This, it seems to be a bit powerful."

Chen Yuan shrugged his shoulders and said with a smile, "This method can gather a large number of fish, but it also makes the operation more difficult for longline fishing boats. The harvest may not be large during this period, but when the pontoons are finally collected, ......."

When the fishing season is coming to an end, the floats have to be recovered.

During this time, you can put a dense hook, or let the purse seine boat come over to pick up the gear. At that time, the harvest was called a gratifying one.

Array longline fishing, Chen Yuan has heard of it, but he has not participated in it. What is the specific effect, Chen Yuan didn't dare to pack the ticket, but he heard from people who used it that the dense array longline fishing was a real hooligan. However, it is time-consuming and labor-intensive to set up a dense array, and there are also examples of failure, Chen Yuan is a little hesitant, worried that the operation will not be good.

Boiled fish with autumn knives