"The diver will be down soon," Captain Liu received a call from Bai Song. "The location has just been determined. We will have a rough result in five minutes."
"Well, Captain Liu, I have a guess that I need to tell you." Bai Song said, "I suspect that there might be a small submarine stored between the two doors below. The people who boarded the speedboat may not be all the people."
"Submarine? Impossible," Captain Liu said, "We do have submarines here, they are all registered. Most shipyards won't sell them without formal registration."
"That's the general situation, and you've seen it." Bai Song said.
"In fact, just now your Qin Detachment mentioned this diving equipment to me and asked me to pay attention to it, but there was no result." Captain Liu said: "We also have regular patrols in the river here. If there really is such a thing, I think it would have been discovered long ago."
"If it is locked between the two doors, then we can't find it, right?" Although Bai Song was surprised that Captain Qin asked this question, he didn't ask any more questions and continued, "I also speculate that the possible submarine and speedboat of the other party are the last resort, and it is impossible for them to wander around all the time."
"Hmm..." Captain Liu thought for a moment: "If we really want to confirm that it is a submarine, we have to report it to our superiors. This matter is not something we can solve. Maybe we need to borrow an anti-submarine helicopter from the stationed unit here."
Bai Song was stunned for a few seconds, the game was getting more and more exciting!
What the hell is an anti-submarine helicopter!
"Doesn't our river guard team have ships equipped with sonar?" Bai Song asked.
"Yes, but they have to be larger ships. The few small boats nearby don't have such equipment. It takes one or two hours to transfer a boat upstream from dozens of miles away," said Captain Liu. "Don't worry. If the divers find traces of a submarine, the relevant departments will definitely be willing to participate. After all, this kind of thing, at the very least, is a case for our public security department. At the very least, it could be considered espionage."
…
Bai Song felt like he was dreaming, but at this moment he was extremely excited.
Anti-submarine helicopter!
Generally speaking, few people would sneak into the Yangtze River, which is our inland river, but we still have to be on guard. The Xiangjiang River, as a major tributary, is directly connected to Donghu Lake, so this kind of thing must be taken very seriously.
According to current policy, submarines are not allowed to travel underwater at will. Ordinary sightseeing submarines must be approved in a special area.
In fact, underwater detection is not as difficult as imagined, and it mainly relies on technology.
Bai Song had roughly heard about how powerful anti-submarine helicopters are. The installed dipping sonar allows the helicopter to fly over a certain detection point, hover at low altitude, lower the transducer array into the water to the optimal depth, and conduct omnidirectional searches in active or passive mode, capable of searching an area of ten kilometers in a single search.
If there really is such a killer weapon, then... hehe...
Is this considered a dimensionality reduction attack?
Bai Song touched his chin with his hand and said, "Captain Liu, this is up to you."
"Wait a moment," Captain Liu said, "the divers will have clues soon."
Bai Song continued to talk with Captain Liu about other details of the case, and the diver successfully returned to the surface.
According to the diver's description, there is a heavy stainless steel door underneath, which is an electric hydraulic structure and a waterproof circuit, and is currently in the open state. Moreover, although the circuit is a waterproof structure, it is now completely powered off.
In addition, there is a water inlet inside, which can allow water to quickly enter when opened, so that the cabin between the two doors is quickly filled with water, achieving unified pressure inside and outside, which helps to open the hydraulic door.
This cabin is about five meters long and wide, and the hydraulic door is very large, basically allowing people to enter and exit horizontally.
Due to the silt problem at the bottom of the river, this cabin has basically been filled up a lot in such a short period of time. Of course, no one knows how much sand has entered. Anyway, it is difficult to judge the depth here. From the instruments, we can roughly judge that the height should be between 5 and 8 meters.
The mud and sand at the bottom of the river slowly enters this cabin with the water flow. Basically, it can be said that if we go into the water again in another hour, this cabin will be completely filled with mud and sand.
In other words, the escape route here is basically a one-time use and cannot be used as a regular backup.
"Can this situation indicate the presence of a submarine?" Bai Song asked.
"I'm afraid not." Captain Liu said unhappily, "I didn't expect the water to be so turbid. Our divers can't find any additional clues. This is too difficult. Once this place is completely buried, it will be even more difficult to find clues.
We basically dare not open the door of the underground tunnel. In this situation, we can't mobilize a large number of troops. After all, anti-submarine aircraft are not something to be trifled with. I have only seen this once in all these years of military-civilian cooperation."
Bai Song expressed his understanding, and his excitement calmed down a little: "Then let's mobilize a sonar ship to come over."
"Okay, I'll ask the branch first if there are any fishing boats or salvage boats with sonar equipment nearby. At the same time, the boats of the water security team are also heading here." Captain Liu said, "Leave this matter to us."
"Well, Captain Liu, I would like to ask again, when can we get the DNA results?"
"The surveyors have already finished taking samples. It will probably take more than eight hours." Team Leader Liu said, "This is already the fastest speed."
"Okay, I understand." Bai Song nodded. This was already considered fast. If the laboratory in Tianhua City worked overtime, it would basically be around this time.
"Well, we have sent the DNA sequence of the criminal suspect Feng Yiling that you provided to the DNA identification center. Don't worry about it. I will tell you the first time I get the result." Captain Liu said, "Director Li from our branch will be at the scene soon. It is estimated that in half an hour, people from the Municipal Bureau and the Provincial Department will be here. Captain Bai, are you guys coming over to take a look?"
"No, we have a forensic doctor there. You can just help take care of it. You should contact our plainclothes corps." Bai Song said, "I'm still outside looking for information about this submarine."
"There are no good clues in this matter, so there is no need to rush." Captain Liu said.
"The clues are indeed..." Bai Song had just said halfway when his phone suddenly received a text message. He was stunned for a moment, and then his whole body trembled: "Captain Liu, I can confirm that there is a submarine!"
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