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Three hours before dawn, the seaplane carrying Tan Renhao and the others landed next to the light cruiser "Bolanghe". In the moonlight, the light cruiser, which weighed six thousand tons, looked like a huge whale floating on the surface of the sea. It wasn't until the seaplane approached that Tan Renhao saw the battleship without any lights, and he didn't know how the two pilots saw the battleship.

"Renhao, look!"

Tan Renhao was startled, and immediately looked in the direction of Hao Dongjue's finger. The two huge shadows floating on the sea to the southeast were blurry, but they could be seen to be two warships, one large and one small.

"That's the 'Dongting Lake' and the 'Jiading'." Ji Xiaobin walked over, and the seaplane he and two other staff officers were flying in landed five minutes early, "After we sink these two warships, the Liaoning government will fund the construction of an artificial submarine reef here, so that nearby fishermen can fish here." ”

This is also clearly an excuse that the command of the Navy has long made up. The decommissioning of the battleship "Dongting Lake" and the heavy cruiser "Jiading" must be made public, and it cannot be hidden from anyone at all. If these two warships suddenly disappeared, it would arouse the suspicion of enemy spies, and would not help in any way to keep secrets. Now, it's even more convincing to find a reason to build an artificial reef.

"You guys go and rest early, tomorrow we will survey the hydrology and set the attack course." Ji Xiaobin yawned, "At eight o'clock, I will send someone to wake you up, so, don't watch the night view here!" ”

"Okay, then let's go rest!" Tan Renhao immediately accepted the colonel's "suggestion", and he was not able to rest well after several days of sea voyages, and when he was on the plane, Hao Dongjue didn't even have a chance to close his eyes and doze off for a while.

The three were assigned to a cramped non-commissioned officer's cabin with a total of four beds, but it was cramped. Chang Jianxin quickly quieted down Hao Dongjue, who was full of complaints, because this was the collective cabin second only to the officer's cabin on any warship, if he was arranged to go to the soldier's cabin, then Hao Dongjue would definitely not be able to sleep all night, that is called real "crampedness".

It seemed that as soon as they fell asleep for a while, a soldier from the battleship came over and woke up Tan Renhao and them. When the three of them arrived at the place where the lifeboat was moored on the back deck of the battleship, Colonel Ji Xiaobin and his two staff officers helped the sailors on the battleship to put a lifeboat equipped with a thruster on the sea.

"We're going to go in a lifeboat." Ji Xiaobin pointed at the two warships in the distance, "We first determine the surrounding hydrological conditions, as well as the distribution of reefs on the seabed, and then design the bombing route today, which must be handed over to the bomber force as soon as possible, so that they can decide the best attack route." ”

Tan Renhao and the three of them immediately came up to help. As a result, in order to be in a hurry, they even ate breakfast on the lifeboat.

The two battleships were parked in the sea just five kilometers away from the cruiser "Bolanghe". They were brought here by tugboats, each with a squad of Marines guarded by those who would be evacuated before the bombing began.

Three Marine Corps divers were responsible for assisting Ji Xiaobin in collecting the distribution of submarine reefs. The hydrological situation on the sea surface was collected by Tan Renhao. The most important data are water temperature, salinity, sea water transparency, water flow direction, water velocity, as well as wind direction, wind speed, etc. These data may seem redundant to many, but in order to achieve the best results from the bombing, it is necessary to try to understand any kind of hydrological and meteorological conditions that may interfere with the bomb or torpedo.

It was not until the evening that they returned to the cruiser "Bolang". By the time they arrived at the officers' cafeteria, most of the officers had already returned to their posts. After each of them asked for a standard officer's meal, they sat down at two tables in the corner of the dining room.

"Here's a map of the reef on the seabed and the bathymetry nearby." Ji Xiaobin must have studied professional mapping, and the seabed map with bathymetric lines he made on the spot was not much inferior to those professional seabed maps. "The biggest problem is that the maximum water depth in the sea around here is only about 50 meters, and the shallowest is less than 10 meters. Ren Hao, what is the shallowest depth required for a 'Swordfish' torpedo? ”

Tan Renhao was stunned for a moment, immediately put down the set of data that was being counted in his hand, and said: "The minimum use depth is 30 meters, and it is best to reach 40 meters." ”

Ji Xiaobin looked at the seabed map drawn for a while. "If this requirement is followed, then there will be a maximum of four torpedo drops, and even if the standard is 30 meters, there will be a maximum of ten torpedo drops. Among them, the closest delivery point to the target is here. ”

Tan Renhao immediately glanced at the colonel's map of the seabed. "It's two kilometers away, isn't it a little too far?"

Ji Xiaobin shrugged his shoulders. "Unless we can get the ship to be dragged a little south, we'll have to choose this place."

Both fell silent. Although the range of the "Swordfish" torpedo reached 8,000 meters, the pilots of those bombers probably did not fully master all the techniques of torpedo bombing. If the torpedo is thrown a little too far, it will definitely affect the result. Of course, it was impossible to change the position of the battleship, because the place of sinking of the battleship was determined long ago and could not be easily changed.

"Colonel, you don't have to be so troublesome." At this time, Hao Dongjue walked over, "The standard bomb drop height of 'gannet' is 250 meters, if this height can be reduced to 150 meters, or even 100 meters, then the minimum depth required for the torpedo can be reduced to about 20 meters." In this way, we can choose a closer torpedo entry point. ”

Ji Xiaobin frowned slightly, and then nodded slowly.

"Will those pilots be able to do it?" Tan Renhao was a little worried.

"It shouldn't be too much of a problem. Previously, they even conducted torpedo throwing training at an altitude of fifty meters. "Ji Xiaobin took out his cigarette, and the officer's cabin was the only public cabin on the cruiser where you could smoke." If the height is set at 100 meters, it will not be a big problem. Renhao, have you done all the data you are responsible for? ”

Tan Renhao gave the sorted data to Colonel Ji Xiaobin, and then began to deal with the plate of food in front of him, busy all day, his biggest feeling was "hungry".