Police Detective

"The divers will go down immediately," Team Liu received a call from Bai Song: "We have just made the positioning, and we estimate that we will have general results in five minutes."

"Well, Captain Liu, I have a guess to tell you." Bai Song said: "I suspect that there may be a small submarine stored between the two doors below. People who get on the speedboat, Not necessarily all people.”

"Submarine? Impossible," Captain Liu said, "It's not like we don't have any submarines here. They are all registered. Without formal registration, most shipyards will not sell them."

"That's a normal situation. You've also seen this situation." Bai Song said.

"Actually, your Qin detachment just 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, I guess I’ve been discovered a long time ago.”

"If it has been locked between two doors, then it can't be found, right?" Although Bai Song was surprised that the Qin detachment mentioned this issue, he didn't ask more, and continued: "I also speculate that the other party's The possible existence of submarines and speedboats is the last resort prepared, and it is impossible to wander around normally."

"Well," Team Liu thought for a while, "If we are really sure it's 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 unit stationed here. Come."

Bai Song was stunned for a few seconds, and the fun got bigger and bigger!

What the hell is an anti-submarine helicopter!

"Don't our riverside guards have ships equipped with sonar?" Bai Song asked.

"Yes, but it has to be a bigger boat. The few small boats around here don't have this kind of thing. It will take an hour or two to transfer a boat from dozens of nautical miles upstream," Liu Dui said. "You don't have to worry. If the divers really find signs of a submarine being launched later, the relevant departments will definitely be willing to participate. After all, this kind of thing, at a small level, is a case of our police, but at a big level, it may not be considered a case." Behave."

Bai Song felt like he was dreaming, but he was particularly excited at this time.

Anti-submarine helicopter!

Generally speaking, few people would dive into large rivers like the Yangtze River, as our inland rivers, but we still have to be on guard. As the main tributary of the Xiangjiang River, it is directly connected to Donghu Lake, so it must take this kind of thing very seriously.

Submarines, according to the current policy, are not allowed to drive underwater at will. General sightseeing submarines must be approved for a special area.

Underwater detection is actually not as difficult as imagined, and it mainly relies on technology.

Bai Song has generally heard of how powerful anti-submarine helicopters are. The installed pendant sonar allows the helicopter to fly to a certain detection point, hover at low altitude, and hoist the transducer array into the water to the optimal depth. Active or passive omnidirectional search, capable of searching within a radius of ten kilometers at a time.

If there really is such a big killer, then... haha

Is this considered a dimensionality reduction blow?

Bai Song touched his chin with his hand: "Captain Liu, it's up to you."

"Just wait a moment," Captain Liu said, "The divers will have clues soon."

Bai Song continued to chat with Captain Liu about other aspects of the case, and the divers successfully returned to the surface.

According to the diver's account, there is a thick stainless steel door below, which is an electro-hydraulic structure and has a waterproof circuit. It is currently open. Moreover, although the circuit is waterproof, the power is now completely cut off.

In addition, there is a water inlet inside. When opened, water can quickly enter inside, so that the cabin between the two doors is quickly filled with water, achieving a unified internal and external pressure, which helps the hydraulic pressure. The opening of the door.

This cabin is about five meters long and wide, and the hydraulic door is large, which can basically accommodate people entering and exiting sideways.

Due to the sediment problem at the bottom of the river, this cabin has basically been filled in a lot in this short period of time. Of course, no one knows how much sand has been filled. Anyway, it is difficult to judge the depth here. From the instrument, it can be roughly The judgment is that the height should be between 5-8 meters.

The sediment at the bottom of the river slowly enters the cabin with the current. Basically, it can be said that if we go into the water in another hour, the cabin will be completely filled with sediment.

In other words, the escape lines here are basically one-time and cannot be used as regular ones.

"Can we tell from this situation that there is a submarine?" Bai Song asked.

"I'm afraid not." Team Liu looked unkind: "I didn't expect that the water would be so turbid and our divers wouldn't be able to find any additional clues. It's too difficult. Once this place is completely buried, there will probably be no way to find clues. .

The doors to the underground corridors were basically not dared to be opened. In this situation, we cannot mobilize troops. After all, anti-submarine aircraft are not a joke. I have only seen our military-civilian cooperation once in so many years. "

Bai Song expressed his understanding, and his excitement just calmed down a little: "Then let's mobilize the sonar boat and come over."

"Okay, let me ask the branch first if there are any fishing boats or salvage boats carrying sonar equipment nearby. At the same time, the water security team's boat is also heading here." Captain Liu said: "Just leave this matter to us. "

"Well, Captain Liu, I would like to ask again, when will our DNA results be available?"

"The surveyors have already finished taking samples, and it is estimated that it will take more than 8 hours." Team Liu said, "This is already the fastest speed."

"Okay, I understand." Bai Song nodded. This is already very fast. If the laboratory in Tianhua City works overtime, it will basically be at this time.

"Well, the DNA sequence of the criminal suspect Feng Yiling that you provided has been sent to the DNA identification center. You don't have to worry about this. I will tell you as soon as the results are available." Captain Liu said: "Our branch Director Li will arrive at the scene soon. It is estimated that in half an hour, people from the municipal bureau and provincial office will arrive. Team White, are you guys coming over to take a look?"

"No, we have a forensic doctor there. Just help and take care of it. You'd better get in touch with the people from our plainclothes corps." Bai Song said, "I'm still looking for the situation of this submarine outside."

"There are no good clues about this matter, so we can't rush it," Captain Liu said.

"The clue is indeed right now." Bai Song was just halfway through when he suddenly received a text message on his phone. He was stunned for a moment, and then trembled all over: "Captain Liu, I can confirm that there is a submarine!"

Who did Bai Song's text message come from? Let's take a guess