In the early years, the two 60,000-ton sliding platforms were built and built in the northern shipyards, so during the trial period after the construction was completed, the test sea area selected had inherent geographical advantages. This is due to the fact that the Northern Shipyard itself is located at the southernmost tip of the Northern Peninsula, and the new ship sails less than a dozen nautical miles from its home port, and then turns west to enter the old Tieshan Water Channel, and then to the west into its own inland sea. This is because there is also a string of pearls between the two northern peninsulas. However, the straight-line distance between the several inhabited islands of the Changshan Islands does not exceed 24 nautical miles, and the straight-line distance between the northernmost Beichenghuang Island and Laotieshan also does not exceed 24 nautical miles, which leads to the fact that the sea area west of this small island chain is all enclosed into absolute internal water under international law, which can also be called a closed inland sea. For the closed internal waters, there are complete territorial sea and airspace rights. With the exception of commercial vessels in normal operation, any foreign and foreign parties,
Aircraft and ships, as well as other navigational equipment, are absolutely forbidden without an invitation. As a result, the two 60,000-ton platforms are naturally closed for all testing activities before they are officially delivered and put into service. Except for space-based visible light reconnaissance means, it is impossible for any foreign aircraft, ships, submarines, and other "intelligent platforms" to conduct any close-up "peeping" into the early testing and experimental activities of the two 60,000-ton platforms. In addition to the natural closed secrecy, the land-based storage and testing base of the carrier-based aircraft itself is also on the edge of the pure inland sea, so the early test tests of the carrier-based aircraft were basically carried out smoothly in a state of complete secrecy. The fact that foreign armies were able to take close-range images of two 60,000-ton platforms was already a matter of these two platforms having fully formed an army and breaking through the island chain for offshore cruising and combat readiness. However, at this time, the 2 platforms are fully loaded with carrier-based aircraft, and there are still around,
There were a large number of "guards with knives", that is, escort ships within the formation. As a result, foreign parties and even various warships and planes used by foreign armies to peep did not dare to get too close, so they could only take a few so-called royal makeup photos from a distance. However, the first test sea area of the more than 80,000-ton platform is completely different from the above. This is because the production shipyard is originally located on the island at the mouth of the river, and the location is relatively prominent. The rectangular sea area that has been declared to be tested is not in a closed inland sea, but is basically an open high seas under international law. And further beyond this sea, about 600 kilometers away, is the Kadena base where tens of thousands of troops are garrisoned by the superpower. It itself has long been stationed reconnaissance and anti-submarine aircraft of various specialties. If these aircraft take off from Kadena to the relevant sea area for a peek, it will only take one hour to fly. So this 9-day open water test activity, don't you worry about being reconnoitred by the adversary to achieve reconnaissance of key parameters in advance?
This risk does exist objectively. But professionally speaking, the appearance of the platform itself of more than 80,000 tons is not of much value. The most critical is the electromagnetic signal and the ultimate performance data, especially the voiceprint characteristics under water. The electromagnetic spectrum of the radar sensor will most likely not be open for testing during the maiden flight. Therefore, as long as the machine is not turned on, it is difficult for the other party to get valuable parameters. As for nautical limits such as maximum speed and minimum turning radius, in order to obtain valuable information, the adversary must send ships or planes to spy on them up close. As for the voiceprint performance, it is necessary for the anti-submarine aircraft to drop buoy sonar at close range, or even directly send submarines to lurk in the test area to secretly record. Addressing the above risks. We will also take precautions in advance to counter reconnaissance and voyeurism. The first is that the test area was announced on an ad hoc basis. That is, it was announced the day before the platform went to sea. In this way, it will be difficult for the adversary to send ships or even nuclear submarines in advance to enter the relevant sea area for stealth eavesdropping.
If the adversary waits for the official announcement of the test area before sending surface ships or even submarines to openly go deeper, it will be extremely difficult and risky. Because during the platform test, there will be a large number of escort ships standing guard in the relevant sea area, and there may also be a variety of vigilance methods below the water surface. The relevant test sea area is no more than 200 kilometers away from the mainland, and the cutting-edge fighter jets can take off from the land base in an emergency and arrive in batches in less than five minutes! All the flying objects that took off from Kadena and peeped at were already spotted as soon as they left the ground. It is possible to be intercepted and driven away multiple times before flying into the test area. In short, I am not afraid that the opponent will not come, but I am afraid that he will not dare to come. Once there is a close confrontation, it is equivalent to testing the anti-harassment subjects together. Wouldn't it be nice to have an extra batch of top-notch sparring partners who bring their own dry food?