A 70-meter-long tuna seine boat with a catch capacity of 2,000 tons per year?
Chen Yuan didn't think it was too much, but that it was too little.
Chen Yuan had seen a report before, saying that it was a 105-meter tuna purse seiner with a fresh fish refrigeration capacity of about 3,000 tons.
"More than two thousand tons a year is too little," Zhou Sheng said.
"It's quite a lot." Zhou Jianguo said: "It's not the past now. We used to catch tuna casually on the high seas, but now when fishing for tuna on the high seas, you need to purchase quotas in many sea areas. Besides, you don't spend all of your time at sea at sea."
Chen Yuan said ‘hmm’ and said, “How much does an eighty-meter-long tuna seine boat cost?”
"It depends on the configuration. The cheaper ones are 70 to 80 million, and the better ones are 150 million, 200 million, or even 300 million. The hull structure, hull strength, onboard equipment, machinery, etc., the price of a ship of the same length is doubled or even several times different.
Times are normal. If you want to build a large tuna purse seiner, it is best to equip a large refrigeration auxiliary ship, which saves time and increases the operating time of the purse seine vessel."
Large refrigeration auxiliary ships are also not cheap. Depending on the configuration, they should be about the same price as purse seine ships, or even more expensive.
"I heard that quotas are needed to build new offshore fishing vessels?" Chen Yuan asked.
Zhou Jianguo nodded: "It's not a quota, it's a need for a license, but these are easy to solve. Place an order at the shipyard, and as long as the money is in place, the shipyard will help you solve all the required procedures."
"In your opinion, which direction is the most likely direction for the tuna to come from?"
There are many fee-based fisheries, and there is a fee for placing artificial fish aggregation devices. Generally speaking, artificial fish aggregation devices are not particularly large...
For tuna longline fishing, the length of a dry line is hundreds of thousands of meters. If it is a small floating ball, it is usually hung for tens of meters. If it is a large floating ball, it is hung for hundreds or even thousands of meters.
If you want to use floating balls to create the effect of a fish collector, then hang one at a dozen or more than 20 meters. And the area must be very large... The area of the floating ball dense area will be several square kilometers, or even more than ten square meters.
kilometer.
The starburst array is made by arranging the rope into a multi-pointed star shape, with a fish gathering device placed in the middle. The starburst array is most suitable for small boats. Fishing boats like Zhang Hang and Lu Lu can set up the starburst array...
"This is a fishing method designed for the fishing season." Chen Yuan explained to Zhou Sheng.
Zhou Jianguo thought for a while and said, "We can set up a Phalanx."
Longline fishing has buoys. To put it simply, everyone puts the rope closer and hangs more buoys.
"Put fewer fishhooks in the buoy area, and place sensors near the fishhook. As long as the fish is caught, the sensor receives the signal, and the auxiliary boat is sent to pick up the fish." Chen Yuan said: "As for the fishing boats, just place them around the Phalanx.
Fishhook... When the fish gather together, as time goes by, more and more fish will gather in the Phalanx. As a result, there will be no fish in a large area of the surrounding sea. This is the core of rogue fishing. If you catch up with the fishing season, what do you think?
How many fish can be gathered in a square kilometer?"
However, in terms of actual square kilometers, too many floats are needed. It is difficult to complete...
When a dense pontoon area covering an area of several square kilometers is arranged, the number of fish attracted will definitely be large.
"On the ship." Zhou Jianguo said with a smile: "Those things have been reported to the company. You have to replace them after you use them."
When small fish come over, big fish will come over. The more small fish there are, the more big fish there will be.
Instead of placing more fish hooks, the Phalanx deployed an oversized artificial fish gathering device. However, this artificial fish gathering device does not violate the local fishery regulations...
As for Phalanx, as the name suggests, it is a very dense form. This method is also called rogue fishing.
"How many square kilometers, or even a dozen square kilometers of dense floating ball area?" Zhou Sheng took a deep breath: "But, the rope in the floating ball area needs to be collected regularly?"
Zhou Jianguo chuckled: "Young people are still young and don't really understand."
Longline fishing includes sinking, drifting, and semi-sinking. In addition, according to the shape of the rope, it can be divided into a long snake formation, a U-shaped formation, an N-shaped formation, a star formation, a coiled snake formation, etc.
"It's too troublesome. Me, Lao Gao, Lao Zhao, the dry ropes on our boats are whole ropes, and one rope is hundreds of thousands of meters long." Chen Yuan said.
The coiled snake array is to coil the rope into the shape of mosquito coils.
"Look for Lao Luo. There are many small sensors on their boats, as well as simple fish detectors. If you want to get rich, you have to make a fortune. At this time, the tuna will come here as soon as you say it."
"It's a bit far to discuss these now." Zhou Sheng said: "What we have now is a longline fishing boat. There are many bonitos. How to catch tuna is a problem."
"That's enough. If we want to form a formation, do you have enough floats?"
On the sea surface, there are floating objects on the sea, and it is easy to gather fish. This is because the floating objects bring a sense of security to the fish.
This dense sea float is an artificial fish aggregation device. Just like there are more fish around the fishing raft than outside.
"We don't have enough sensors on board."
"OK."
"Northwest." Zhou Jianguo said: "But there are many fishing boats in the northwest. If you go there now, you probably won't be able to get a good position.
Zhou Sheng, who was listening nearby, looked confused and asked: "What is Phalanx?"
Chen Yuan shook his head: "What about the fish collector you made before?"
"How many auxiliary ships are there?"
"6 items."
Zhou Jianguo also chuckled, touched his chin, looked at Zhou Sheng, then looked at Chen Yuan, and said with a smile: "This young man really doesn't understand."
"Young man, you don't understand at all." Chen Yuan laughed and looked at Zhou Jianguo.
"4."
A fish gathering area of several square kilometers or even more than ten square kilometers is very exaggerated when you think about it.
The Phalanx is suitable for the fishing season and requires multiple longline fishing boats to complete the arrangement.
"Cut it." Zhou Jianguo said.
The issue of procedures can be said to be the least of the issues.
"How many fishing boats do you have now?" Zhou Jianguo asked.
"Then go to the northeast." Chen Yuan said: "If we want to form a formation, we need to recruit big fish. However, we have too few auxiliary ships. With 4 auxiliary ships, plus our Dabai, there are only 5 in total, which is not enough.
Use it."
"What do you mean? How to do it?" Zhou Sheng looked curious.
Zhou Sheng thought for a while and said, "This seems to be a bit powerful."
Chen Yuan shrugged and said with a smile: "This method can gather huge schools of fish, but for longline fishing boats, it also increases the difficulty of the operation. The harvest during the period may not be big, but in the end the buoys will be collected
when……"
These floats must be recovered when the fishing season is coming to an end.
During this period, you can place dense fish hooks, or let the seine boat come over to take over. The harvest at that time will be a gratifying one.
Chen Yuan has only heard of Phalanx longline fishing, but has never participated in it. As for its specific effects, Chen Yuan dare not vouch for it, but people who have used it say that Phalanx longline fishing is a real rogue. However,
Setting up the Phalanx was time-consuming and labor-intensive, and there were also cases of failure. Chen Yuan was a little hesitant, worried that the operation would not be good.