Johnny was still thinking about why, Tang Hai found a few people, got some large flatbed trucks, and helped the trio unload from the cars.

Piles of steel bars were folded up, and it was impossible to see what kind of structure this new net was.

The strangest thing is that each line of this network not only has a main line and a secondary line, but also a strange line is connected!

There are also two big boxes that are tightly sealed, and those who don't know think they are contraband!

Tang Hai used to only know some seafood knowledge roughly, for example, when the tide rises in some seasons, he can go to the sea and pick up a lot of good things...... It doesn't seem to work now? The oceans are much more barren than they used to be.

Tang Hai also knew that oysters sometimes need to be collected on rocks with chisels, that geoducks need to be dug in the deep sand, and that many shrimp and crabs must be caught according to the season, and when the season is wrong, they are all in the deep sea, and humans cannot catch them.

Shrimp fishing is a very troublesome thing, otherwise anyone with a discerning eye will calculate, a pound of cod steak is now in the market price of $17, a pound of vannamei shrimp, the largest has reached $8, and salmon is only $4! Shrimp require less feed, higher feed conversion rates, and more expensive, so why are fewer and fewer shrimp farming?

It's just that you can't get it back after the seedlings are planted!

Cast the net shrimp will run, lure shrimp, shrimp is smart or don't want to eat it and don't come up, now all kinds of shrimp hooks are sold on the Internet, and the effect is not very good.

When the shrimp fishing technology was not developed, shrimp fishing even required people to dive to the bottom of the water, remove the gravel with their hands, and then catch the ...... directly

This is much more difficult than picking clams and geoducks, which are basically immobile and shrimp are more flexible underwater than the average person.

Tang Hai was thinking about how to use this thing, and the flatbed truck was already pushing towards the dock.

It would have to be fitted on a fishing vessel with a displacement of at least 50 tons, and Hadley said it was difficult for a small boat to carry it.

Ma Lena followed with a calm face, although her expression did not show it, Tang Hai just knew that she was in high spirits at this moment.

By the docks, Mary had already brought the Little Princess, which was actually the flagship of the fishery.

If you want to test Hadley's vaunted artifact, you have to try the most powerful fishing boat.

"Okay, what's next?" Tang Hai and these people couldn't play this 'net', so they had to ask Hadley.

"I, my thing, not necessarily, is cheaper than this fishing ground, fishing ground. Although I applied for a patent, I ...... Can you guarantee that, absolutely, safely? ”

Tang Hai raised his head slightly, Hadley's question was too unfounded! You are a top student at the University of Washington, except for Jin Sanpang, who dares to blatantly steal your patent!

But do you really have so much confidence in making a network and applying for a patent?

"Everyone here is like my kids, even if they put a gun to their head, they won't give away any secrets!" Gamboa's voice rang out, and the old man rushed over when he heard the commotion.

"oK, then, then I'll assemble it!" Hadley waved his hand, Jordan came to help, and the two of them worked together to put things on the ground.

Tang Hai felt that it might be easier to replace Hadley with Jennifer, who really didn't have much strength......

Soon, a football goal-like thing appeared!

This thing looks like a big garbage shovel! And it's the kind of top cap!

In the front section of the 'garbage shovel', a probe is protruded at a distance of half a meter, and the probe is slightly rolled up, even if it is 'shoveling garbage', it will not hook anything and cause it to not be able to pull it......

The most amazing thing is that there are 'wheels' under the garbage shovel! I think it's for anti-wear when mopping the floor.

But this can't hook the shrimp on the bottom of the sea at all!

"This, this thing can only be used on the relatively flat bottom of the sea, used in fishing grounds, and shrimp must be able to catch it. Deep-sea fishing is easy and easy to damage. Hadley admonished solemnly.

Seeing that Hadley was going to uncover the first black box, everyone swallowed secretly.

Press hard and turn it on!

"Shet, I thought it was, it turned out to be an electric fish device!" Johnny was biting his fingers and looking nervously, and when he saw that it was actually an electrical box, he jumped up.

Everyone has a kind of thought in their hearts, 'I've got a big groove' or something, mysteriously, after waiting for you for a week, you actually took out this thing!

"Electricity is exterminating fishing, isn't it illegal?" Tang Hai hesitated for a moment and asked.

"No, I'm this, this thing can't kill fish."

Marlena's eyes lit up, and soon Gamboa and some of the old fishermen understood!

"Electric immortal fish? Then you're too weak, in my hometown, even people can often be electrocuted. Tang Hai pouted.

“……”

“……”

“……”

After a while, Hadley and the others explained the principle of this device, and when it came to the wonders, many people couldn't help but want to beat him, because he stammered and made people scratch their hearts!

But after he said far away, everyone couldn't help but applaud!

As long as there is movement, the shrimp's first reaction is to hide in the sand, which is a creature with little courage, so the general trawl is not good for catching shrimp in marine fisheries, and the shrimp bury themselves after brushing twice. Using trusses is time-consuming, cumbersome and costly, and the effect is not necessarily good.

And the 'probe' of this net will emit a weak electric current, which will not kill anything, but it will make the shrimp feel that there is something in the special sand......

Then jump out!

Just caught in a trawl!

The trawl can control the size of the shrimp caught through the mesh, and the size can be graded slightly after the catch, so as to avoid the 'one pot end'.

Cold-water shrimp such as Arctic sweet shrimp, 10 grams a piece, no one eats here, they are all made into dried shrimp and sold out, and sometimes the size of the shrimp is strictly controlled, and even the size is not traded.

But 45 grams of a variety of cold-water shrimp is $8 per pound!

In 2014, the global cold-water shrimp production was urgent, and the price will be raised this year!

Shrimp of about 40 to 45 grams are the most cost-effective to sell, but shrimp of this size are already very smart......

The last box opened, it was a computer, listen to Hadley blow, as long as this computer is connected, he can accurately control the current intensity of the tip, as long as the tool is not destroyed, this shrimp net can even be used in 300 meters of water!

There are two patents for this thing, one is the structure of a network and the other is a computer.

Everyone was stunned, and Johnny strongly recommended trying it out.

It is easy to eat shrimp and difficult to catch shrimp, which means that the easiest to eat in seafood is shrimp, cooking without special methods, one bite at a time when eating, but fishing ......

The general way of inshore shrimp fishing is truss rod mowing shrimp.

Several people hold a steel pipe of at least 20 meters to set the net, and then use a nylon rope to slowly enclose several nets, which is more difficult to retract and release, and the workmanship is very strong. The most important thing is that the cost is extremely high, and in the end, a bunch of small shrimp are caught, and the profit of each net is thinned, and it is even easy to cause extinction fishing, such as the difficulty of finding prawns during the fishing moratorium in Cambodia last year. China is so strict in its management that at least 1,000 fishing boats are lined up at any time, which does great damage to the sea.

Johnny didn't believe that just this small device, a little change, could optimize the effect of shrimp fishing several times, and he strongly asked to experiment with it while there was still a purse seine cove in the fishing ground to confiscate fish.

Shrimp are harvested using trawls, as long as they are faster than shrimp, and some rapids can even catch tuna and sailfish.

The group loaded the device onto the ship, it was Hadley's test specimen, a little out of size, but not a big problem. It's easy to load and unload, and the current intensity is easy to control.

Fishing boats should follow the 'hollow zigzag' structure around the bay, not to mention 100%, the right size shrimp can catch at least 95%, according to Hadley's words, the Little Princess is a bit bigger, and the two-hundred-ton fishing boat is more flexible to play this.

Less than 500 meters away, Hadley asked the ship to stop and check.

"Two hundred, two hundred pounds! It's all big! Jason flipped through the shrimp nets, his face full of surprise. If you change the 200-ton fishing boat to collect the shrimp, you can clean the bay in one day! In this way, even if only shrimp are raised, the manpower is enough to collect them!

All the crew members are excited, go dive for shrimp fishing, go truss and drag shrimp!

Everybody's going to send it!

"Sure enough, you have to be a scholar...... Tang Hai was stunned for a long time, and finally spit out these words, and at the same time made up his mind to go back and look at the gold plums that he had picked up the day before yesterday a few more times.

Johnny squatted and flipped the shrimp net, also with a look of disbelief.

"It's nothing, if you can find a way to save effort and produce more than oysters and geoducks, I'll serve you!" Johnny got up suddenly, and Ya was still unconvinced!

"Who, who said I can't help it?" The great inventor Hadley gave him a disdainful glance.

Johnny feels like he's been critted......

He looked at a few people, the great inventor Hadley, the all-round fisherman Jordan, the encyclopedia of the ocean Jennifer, and the dog king Tang Hai who was favored by the gods......

"What is the purpose of coming to Earth, you guys?"

……

Let's count the tickets~