The Rise of the Empire

"Sir, your black tea is ready. Fine Darjeeling black tea." Arhan, who came from British India, handed a cup of steaming black tea to Major Wintour.

"Well, yes, it is indeed Darjeeling black tea, not the powdered tea usually distributed to the army." Major Wintour put down the telescope in his hand, and then did not forget to cover the lens before accepting the black tea sent by his assistant.

"Captain Gwen, have the results of our observations over the past few days come out?" Major Wintour said.

"Part of it has already come out. The American supply operations can almost be described with mechanical precision. Every time, three water supply ships are dispatched. They all light a fire and set sail at 6 o'clock in the morning, and 7 o'clock in the morning." Depart on time, the entire replenishment process will last about 15 hours, which means that at 10 o'clock in the evening, the three water replenishment ships will return to the base, and then they will rest for about 3 to 5 days before proceeding to the next one. Water replenishment operations, and in addition to the normal water replenishment ships, every week, a supply ship will come to deliver supplies and supplies to the US military on Christmas Island," said Captain Gwen.

"According to our estimation, the route that the large transport fleet passes is no more than 3 hours away from Christmas Island. Theoretically, as long as we can keep an eye on the water replenishment ships on Christmas Island, then with the reconnaissance capabilities of the Japanese fleet, we can find a A U.S. transport fleet is not a big problem."

"There is a small airport and seaplane terminal in the northeast of Christmas Island. The Americans obviously also consider the security of the Christmas Island area, so there are also seaplanes patrolling during the day. This may be a trouble for our ambush fleet. After all, if we arrived early and happened to be spotted by an American seaplane, the American transport fleet would probably escape."

"Before the fleet sets off, Americans' radio waves will indeed experience explosive growth, and several observations show that their frequency bands and durations are relatively fixed. From this perspective, their communication content should be formatted. We are completely The general situation of the American fleet can be inferred through the communication frequency bands and times of Americans in different time periods. For example, before the fleet sets sail, the communication duration is very short, and it should be to confirm whether the transport fleet has arrived at the supply position, and then About 2 hours after the fleet sets off, the communication time will be relatively long, and it should be coordinating supply-related information. But after 12 hours, the communication frequency will decrease rapidly, and it feels that the supply should be over, and the water supply fleet is preparing to evacuate." Ge Wen said the captain.

"Okay, it seems that we have collected quite a lot of information, so let's send the information out when we contact the K4 submarine tonight. After all, we still need the K4 submarine to confirm the accuracy of the relevant information." Wen Major Tour said,

"By the way, after completing the contact tonight, we need to hide for a while. Our recent radio communications have been a bit frequent. The security team has discovered the unusual movements of the US garrison. We now need to move to Base 2. Don't forget before leaving. Erase all traces." The major thought for a moment and added.

And that night,

After Major Wintour's team passed the relevant information to the K4 submarine, this giant whale hidden in the depths of the ocean also began to perform its own mission. They had to verify the accuracy of the intelligence through personal observation, such as A few minutes ago, the K4 submarine just received a telegram from Major Wintour. It is said that tomorrow, a transport fleet will pass near Christmas Island to receive supplies, and the K4 submarine will arrive based on intelligence and inference. Determine the relevant circumstances.

"First of all, according to intelligence, the other party's transport fleet will pass through a radius of 80 kilometers with Christmas Island as the center. So the entire range should be like this." The navigation chief first drew a circle on the map.

"Secondly, according to our weather forecast, there will be wind and waves in the western waters of Christmas Island tomorrow. This situation will be very unsuitable for replenishment. Therefore, we think they should replenish from the east." A large figure on the side used a blue pencil to mark half of the circle. Cross out.

"Third, consider our radio direction finding distance and the visible distance of the U.S. fleet. (That is, the distance to observe the smoke column of the U.S. fleet through a periscope.) We only need to deploy at these points to cover the entire area. The key is Which of these points should we choose?" The captain marked several nodes on the chart with a red pencil.

"The last problem can be easily solved. The major's team will send us a telegram in the early morning, and the content should be about the heading of the U.S. water supply fleet and seaplanes. Based on this information, we should be able to determine the U.S. fleet The approximate location." The captain of the K4 submarine finally said.

In the end, the results of the second day were acceptable to the British on the K4 submarine, although it was eventually discovered that the American fleet was at least 7 hours later than scheduled, and according to the British after the risk of surfacing, Judging from the results of observations on the water, the distance between the two sides may be more than 50 kilometers... However, it is acceptable to be able to "see" the other party when it is almost impossible to decipher the other party's telegrams. After all, if the Japanese combined fleet is here, a fleet with a large number of reconnaissance aircraft and more systematic radio information processing capabilities will want to discover There is almost no problem with such a fleet, and it is possible to deploy it in advance even after considering discovering the opponent.

If the relevant information is excavated in depth in combination with other intelligence, it is possible for the US and British staff to deduce a rough route and timetable for the US transport fleet. There is a saying that tells rabbits not to eat grass on the edge of their nest. Although a key node in the British positioning of the American transport fleet is Christmas Island, it does not mean that the Japanese fleet will attack the American fleet near Christmas Island. , after all, judging from the major's telegram, the U.S. Navy is already wary, and the major wants to stay on the island for a while longer. Therefore, it is necessary to eliminate suspicion as much as possible.

And if you take action in the offshore waters of Christmas Island, you must also be careful of the reconnaissance force of Christmas Island itself, such as the seaplanes and radio direction finding devices deployed on Christmas Island! The special frequency band low-power radio carried by the major may not be discovered immediately when sending the message through special methods (for example, splitting a telegram into several segments and sending them in different frequency bands, so that each piece of information is The transmission time is very short and it is difficult for the other party to catch it.) However, the frequent mobilization and contact at the grand fleet level are difficult to hide. As long as one of them is leaked, the consequences will be very bad!

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rise of empire

rise of empire