After engineers built the first prototype, the intelligence department sent dozens of personnel to learn how to master and operate the arms. In fact, the operation method is not troublesome, and the operator controls the rotation, telescopic, and opening and closing of the robotic arm through two operating levers. During this time, the engineers also made some minor design improvements. For example, add a piece of counterweight iron at the bottom of the wire cage, and at the same time change the connection between the wire cage and the mechanical arm to a universal movable type, so as to ensure that the mouth of the wire cage is facing upwards and the things that are loaded in it will not fall out. The shape of the steel fingers at the end of the arm has also been improved to be more suitable for gripping objects with smooth surfaces.

By the 25th, after more than 20 robotic arms had been produced, two large transport planes arrived in Zhoushan, and all the robotic arms were packed into crates, along with Tan Renhao and those engineers, the staff officers of the naval command who participated in this work, and the personnel sent by the intelligence department were all loaded into the planes.

Tan Renhao enjoys the treatment of "first class", which is actually a wider position, and it is only a soft seat, and the rest of the personnel can only be squeezed into the narrow cabin at the back. After the plane left Zhoushan, Tan Renhao leaned back on a chair and fell asleep. He didn't talk to the officer of the intelligence department, he didn't like to deal with those mysterious intelligence agents in the first place, and the other party didn't want to talk to him.

The plane flew over the ocean for more than ten hours, and when the plane began to descend in altitude, Tan Renhao recognized the island below at a glance as Hachijo Island. When the 6th Sentai captured Hachijo Island, he had seen aerial photos of the island, and Mt. Hachijo was very eye-catching, and the airport on the island was also eye-catching.

After the transport plane landed at the airport, Tan Renhao and the others were taken to the seaplane dock by a group of officers wearing military uniforms, but it was obvious at a glance that they were intelligence officers. Four large long-range maritime patrol aircraft are already waiting over there. The equipment in the cabin of the Wujia plane was dismantled, just enough to stuff Tan Renhao and his group of personnel and those crates. Without even eating a bite of hot rice, the seaplane carried Tan Renhao and them out of Hachijo Island. Fly northeast.

This time the flight was longer, and the long-range water patrol plane was very slow, and the conditions above were even worse, Tan Renhao was almost squeezed into his seat, surrounded by people, and he couldn't even stretch his feet straight, because there were several crates stacked in front of them.

"General, do you want to eat?" The navigator handed over a piece of chocolate wrapped in brown paper. "We've been flying for about a dozen hours, I really don't know why those damn intelligence officers are causing us trouble, what are you transporting, does it matter?"

"I don't know, I'm wondering where the hell those damn intelligence agents are going to send us!" Tan Renhao shrugged his shoulders, he was a little strange, how did the navigator recognize him as a general, he was wearing an ordinary military uniform without any rank mark.

"I won't be there until night, so let's have something to eat."

Tan Renhao did not refuse. He was also starving. After he took the piece of chocolate. The navigator took out a cardboard box containing the same chocolate floor, and let the crew of the plane eat a little, it seems. This has been prepared for a long time.

The plane was flying in a jolt, and most of the engineers, and even a staff officer of the Navy Command, vomited the contents of their stomachs halfway through, but the personnel of the Intelligence Bureau didn't seem to have any. Tan Renhao also resisted the feeling of wanting to vomit, it was not that he was airsick, but that the bad fishy smell in the cabin made him feel very uncomfortable, until the navigator opened a small window and let the cold air outside blow in. However, the windows closed quickly, and the air outside was cold. It was so cold that Ren Hao was about to tremble.

In this unbearable environment, Tan Renhao persisted for more than ten hours, until the plane touched the surface of the sea and he was relieved, and when he looked through the glass in front of the cockpit along the passage, he saw a large barge parked on the gray sea in front of him. The wind and waves on the sea were very strong, and it seemed that the wind outside was also very strong, and the seaplane bounced on the sea several times before it landed. Then he slid quickly to the side of the barge. The navigator squeezed from the cabin to the hatch and threw a cable onto the barge, which was immediately tied to a steel pipe and towed the seaplane over, and then an improvised cable bridge was erected between the barge and the seaplane's hatch.

When Tan Renhao jumped onto the barge, one of the soldiers on board immediately threw a thick padded jacket to him. The winds are really strong and biting, which must be high latitudes, and the North Pacific winters are cold and stormy.

"Talking about the general?"

Tan Renhao craned his neck and nodded at the officer who was wearing a trench coat and walking towards him.

"My surname is Li, and I'm the person in charge here, let's go inside and talk about it."

Tan Renhao followed the man into the cabin of the barge, but there was nothing he could say. It's mainly the salvage process, what to do if something goes wrong, and most importantly, they have to wait on the surface before the damn storm has passed. At this time, Tan Renhao also knew that the submarine was lying quietly on the seabed about 85o meters below the barge. More than a month before that, intelligence used the echolocation system to find the submarine.

After waiting for three days, the storm was only a little smaller, and the weather was definitely difficult to completely improve before April, and they could not wait any longer, Tan Renhao and the officer surnamed Li decided to complete the salvage work as soon as possible, so as not to change the weather again and continue to delay time.

All preparations were immediately arranged, and all the small cranes that had been upside down on the barge were erected, and the engineers, with the assistance of the intelligence bureau, lifted the mechanical arm. Before the official salvage, the situation of the submarine must be determined, and for insurance, this time the engineer is responsible for operating the robotic arm.

The robotic arm was put into the sea at around 10 a.m., and it took about 45 minutes to dive to a depth of 85o meters, and then images of the bottom of the sea appeared on the TV screen, and the sunken submarine was found at around 11:20 a.m. The submarine was hit by a torpedo in the engine room in the tail section, which caused it to sink in the water, the submarine was tail down, head up, and the inclination angle was about 25 degrees, like a coffin half-standing on the bottom of the sea.

"Judging by our analysis. Gold is stored inside the submarine's ammunition cache, battery compartment, and ballast tank. The officer, surnamed Li, marked the location of the three compartments on the structural diagram of the submarine, "We first cut open the pressure-resistant shell of the bow ammunition compartment, and then cut off the pressure-resistant shell on the left side of the bow piece by piece until we found the boxes where the gold was stored." ”

"Boxes?" Tan Renhao also thought that the gold was stacked inside the submarine.

"Yes, it's supposed to be a green subway suitcase, with a shrunken top. The outside is painted with the letter A. ”

The officer surnamed Li gave Tan Renhao another photo, which was one of these boxes, "Try to bring the box directly to the water, if it doesn't work, you can only open the box, or smash it open, and transport the gold piece by piece." ”

These salvage plans were determined by the intelligence bureau itself, and Tan Renhao did not give any more opinions, and what surprised him a little was that the intelligence bureau even knew very well what the Japanese devils used to hold gold. Where did they get this information?

The first salvage work began in the afternoon of the same day. This time, the engineers and naval officers were not allowed to interfere, and it was all up to the intelligence bureau's own people. Five robotic arms with welding torches installed were lowered. It took a whole afternoon to cut out a large hole in the pressure hull of the bow of the submarine with a diameter of about three meters. Because there is no day and night at a depth of 85o meters, the salvage work continues at night.

Tan Renhao sat on the deck and watched the personnel of the Intelligence Bureau operate the robotic arms, and the engineers and other officers were placed in the cabin of the barge, and they were not allowed to move on the deck without permission. Because Tan Renhao was in charge of the navy, no one "invited" him to rest in the cabin, and he could move freely on board.

By about eleven o'clock came the good news that there was indeed gold on the submarine, and that a box had been knocked open when the submarine sank, and the gold inside had fallen on the deck. Past eleven. The first piece of gold was salvaged. Tan Renhao also surrounded him curiously, although he knew what gold looked like, but he also wanted to see how big the gold bricks of the Japanese devils were.

The gold brick is about 2o centimeters long, 8 centimeters wide and 4 centimeters thick, with four sides in the shape of an isosceles trapezoid, rectangular on top and bottom, and weighs about ten kilograms. There are several Japanese characters printed on the gold bricks, which have been explained by people who understand Japanese. Tan Renhao knew that this was the central bank of Japan's inventory of gold, and that was probably what those words meant.

The salvage work was in full swing, that night, the twenty robotic arms were placed in the bow fish compartment about the next day, the weather did not change much, the wind and waves at sea were about one meter high, and the operation of the robotic arm was replaced by a group of personnel, and the salvage work continued. By the afternoon of the same day, the pressure-resistant shell of the battery compartment in the belly of the submarine was also cut, and the salvage work was a little more difficult this time, because the space was limited, so the mechanical arm could not reach in, and the opening had to continue to be expanded.

In the evening of the same day, a robotic arm using a welding torch applauded. The ship's engineers were immediately mobilized, and after inspection, it turned out that there was a problem with the image transmission system, which could not be repaired on board, and as a result, the robotic arm had to be abandoned.

That night, a large hole about 10 meters long and 3 meters wide was cut in the pressure-resistant shell of the submarine's battery compartment, and most of the batteries were removed, and the green boxes stored at the front and rear of the battery compartment were soon found (the TV screen was only dark and not green, and there were no color televisions at that time). From the second half of the night, the boxes were lifted out of the water by 6 reels. Each box contained about 4oo of these boxes the next morning.

"There are already 2oo tons, and according to the information we have obtained, this batch of gold is at least 35o tons, that is, there are still 15o tons in the ballast tanks at the stern!" The officer surnamed Li clicked on the structure diagram of the submarine, "The submarine is in the mud on the bottom of the seabed, and we can only find a way to cut off the upper half of the submarine!" ”

"Cut off?"

The officer, surnamed Li, nodded, and then drew a red line about a fifth of the way to the submarine ship.

"First cut off the pressure-resistant shell, and then cut off the keel inside, the front part of the submarine will fall, the tail compartment will be exposed, and then we will be able to scoop up the gold."

"What if it's not in the ballast tanks of the ship's department?" Tan Renhao frowned.

"Don't worry, our intelligence is very accurate, those two *** don't have the courage to lie to us!" The officer surnamed Li immediately realized that he had missed his words, "Okay, start the last step of salvage work in the evening, General Tan, you go and rest, if everything goes well, you can go back the day after tomorrow." ”

Tan Renhao shrugged his shoulders, and he didn't want to argue about anything, anyway, this was a matter for the intelligence department.

It is very difficult to cut off the submarine in its entirety, but for 15o tons of gold, let alone a submarine, these intelligence officers may even be able to cut the aircraft carrier in two. The cutting work lasted a day and a night, and at last the poor Japanese submarine was in a different tail, and the intelligence officers found the last of the gold. The next salvage work lasted for more than half a day. When the last box was fished up, the salvage was successfully completed.

After five days of hard work, a total of 4,489ooo kilograms of high-purity gold were recovered from the submarine, and all of them were stored by the Bank of Japan. Tan Renhao, as well as the engineers and naval officers, also boarded the seaplane that had come to pick them up and returned to Hachijo Island on the day of the salvage end. Until this time, most people still believed that it was the cipher machine on the submarine that was salvaged, as well as a large amount of important information. Of course, why use so much manpower, and for several days, no one will come out to explain this.

After Tan Renhao and the others left, the personnel of the Intelligence Bureau also loaded several time bombs on the submarine, completely blowing the submarine to pieces, so that no one will know in the future that there was once an intact submarine here, and it was a submarine with nearly 45o tons of gold.