(20 points)

"The Japanese envisioned this 'nine-stage operation' that the U.S. Pacific Fleet and the Atlantic Fleet would roughly split into two groups after the start of the war, and that the Asian Fleet would be the main force of light cruisers, starting from the Philippines. For this fleet, Japan was scheduled to deal with the Third Fleet, which was also dominated by light cruisers. The other U.S. fleet, the Pacific Fleet, reinforced by the Atlantic Fleet, is expected to depart from the West Coast of the United States or Hawaii and will be divided into four groups: a fleet of submarines will engage Japan; the other group, with 4 to 6 heavy cruisers as the main force, will be engaged in surprise attacks and harassment missions; The third group, with 14 heavy cruisers as the main force, will serve as the vanguard and reconnaissance mission of the main fleet; The last group consisted of 15 battleships and a number of aircraft carriers as the main force, and was responsible for the main force of the war against Japan. ”

"The Japanese divided their battle with the American fleet into nine phases: the first was from the west coast of the American fleet to Hawaii. After that, the American fleet was to occupy part of the Marshall Islands as a bridgehead. The voyage of the U.S. fleet after its departure from Hawaii was set for the second leg and the voyage before the occupation of the Marshall Islands was the third leg. After the capture of the Marshall Islands, the U.S. fleet would reach the waters of the western Pacific Ocean, which the Japanese called the 'Inner South Seas,' for the fourth leg of the voyage. The Japanese then envisaged a U.S. fleet sortie from the Marshall Islands to a predetermined Japanese area near the Caroline, a distance divided into the fifth and sixth segments. The night before the scheduled decisive battle is the seventh stage, the scheduled day of the decisive battle at dawn is the eighth stage, and the final fleet decisive battle is the ninth stage of the war. The Japanese Navy's plan was for the fleets to assemble at Truk in the Caroline Islands within 72 hours of the start of the war, using it as a base for advance. ”

"The Japanese plan predicted that war with the United States would break out in 1946, when the first and second stages would be monitored along the route with four reconnaissance cruisers, six 2,800-ton 'flagship submarines,' and four 1,900-ton ocean-going submarines. The forces required for the third to sixth sections are six 'super combat ships' each equipped with 12 508 mm guns, eight 'Zuihe' aircraft carriers, two reconnaissance cruisers, four 'flagship submarines' and 30 1,400-ton 'Haida' submarines. The third and fifth sections will be attacked by the 'Haida' submarines, and the fourth and sixth sections of the US fleet will be attacked by carrier-based aircraft and land-based aircraft, respectively. In the seventh section on the eve of the decisive battle, the Japanese Navy will launch a night attack with a huge torpedo force consisting of 6 submarines, 38 cruisers, and 80 destroyers; In the early morning of the next day, the eighth section carried out a supplementary strike with 20 submarines and carrier-based aircraft. In the ninth stage of the decisive battle of the fleet, the final blow will be delivered to the main US fleet with the strength of 16 battleships, 10 aircraft carriers, and 20 submarines. ”

After listening to the introduction of the "nine-dan operation", someone laughed.

"The Japanese are still so wishful thinking. Not to mention that once war breaks out and American industry is in full swing, will the strength of the US Navy be as they expected, that is, as they imagined, the Americans will be so stupid to jump into the trap they have set according to their plan? ”

"The Japanese are always like that, they always think that they have always taken the initiative."

"Have the Japanese forgotten the existence of our Chinese Navy? Or do they think that without the 'Republic' class battleships and the 'Glorious' class battlecruisers, our Chinese Navy is nothing? ”

"Judging from the Japanese manpower allocation for the 'nine-stage operation', it has specific requirements for the performance of the warships used in each stage. As far as capital ships were concerned, the Japanese Navy spent 125.8 million yen after 1923 to modernize the existing capital ships, as the financial resources of the treaty limited the possibility for the Japanese to build more warships. Modifications include the addition of underwater mine-protected bulge compartments, strengthening armor defenses, increasing the elevation angle of the main gun to increase the firing range, replacing the boiler to increase power, and so on. The opposition to the treaty in the Japanese Navy has long held the view that "limiting armaments will be more wasteful," arguing forcefully that it is better to build new warships than to spend a lot of money on repairs. However, from a technical point of view, since the new warship project is frozen, the existing warships, which are aging day by day, must be modified according to the progress of naval technology, otherwise they will lose in future naval battles. From an economic point of view, after the beginning of the 'Navy Holiday Era,' the Japanese Navy's shipbuilding costs were drastically reduced, and the shipbuilding industry entered a state of recession. ”…,

"Actually, have you noticed that the Japanese envisioned that the war with the United States broke out in 1946, did they think that before 1946, they would destroy our Chinese Navy first?"

"There is this possibility, but I am afraid that this is the wishful thinking of the Japanese again."

"What I want to know is, what did the Japanese rely on to destroy our Chinese Navy? Our Chinese Navy does not have giant battleships and battle cruisers now, but there is no now, which does not mean that there will not be one when the war starts. One of the officers squeezed his eyes and said meaningfully.

Hearing his words, the other officers all smiled heartily.

No one knows better than these people about the real state of the Chinese Navy in the "Navy Holiday Era".

"The last time the Japanese suffered a big loss in the 'Battle of Busan', they want to retaliate, either build supergiant ships or aircraft carriers, and rely on light ships to defeat us, that is a fool's dream."

"Yes, the Japanese now attach great importance to aircraft and aircraft carriers, and in terms of aircraft carriers, neither the Washington Treaty nor the London Treaty provides for the total tonnage of aircraft carriers of the Japanese Navy. In 1930, the Japanese Navy already had four aircraft carriers, namely the 33,000-ton large aircraft carriers 'Bancheng' and 'Tenryu', and the 7,470-ton small aircraft carriers 'Fengxiang' and 'Ryuxiang', with a total tonnage of 80,570 tons. These four aircraft carriers were organized into two air fleets, which belonged to the First and Second Fleets. Among them, the large aircraft carrier is equipped with 24 carrier-based fighters and 12 carrier-based attack aircraft, and the small aircraft carrier is equipped with 6 ship-based combat and ship-attack aircraft. ”

"The Japanese claimed that the standard displacement of the two ships, 'Pancheng' and 'Tianlong', was 26,900 tons, and these two aircraft carriers were actually equipped with 10 8-inch guns, so the actual tonnage was larger. The Japanese are building more aircraft carriers, and their 'Second Plan' is premised on the expiration and abrogation of the Washington Treaty, and they have decided to build two new aircraft carriers, namely 'Soryu' and 'Flying Dragon', as well as one replacement ship for 'Fengxiang'. In addition, the hulls of three smaller aircraft carriers will be built, namely the submarine carriers 'Kenzaki', 'Takasaki' and 'Big Whale'. ”

"The progress of our Chinese Navy's aircraft carriers, the Japanese must not know. If they knew, they wouldn't have come up with these out-of-tune things. ”

"The movements of the Japanese in terms of cruisers are also worth our attention, and in the 1918 '88th Fleet' plan, the Japanese planned to build three 7,100-ton and six 3,500-ton light cruisers. This batch of warships was to be used as torpedo cruisers and reconnaissance cruisers. The 7,100-ton light cruiser was later developed into the 'Furutaka' type cruiser, and the specifications of the 3,500-ton light cruiser were later adjusted to 4,100 tons and 5,500 tons. From 1920 to 1925, the Japanese Navy successively built 14 5,500-ton medium cruisers of the "Kuma", "Nagara" and "Kawauchi" classes, all of which were equipped with seven single-mounted 140-mm guns and three triple-mounted fish launch tubes, with a speed of 36 knots. In 1922, the designers of the Japanese Ship Administration Headquarters, Hiraga Jean and Fujimoto Kikuo, jointly trial-produced the small cruiser "Yubari", and achieved the same combat effectiveness as the 5,500-ton light cruiser with a tonnage of less than 3,000 tons. As a result of the success of this experiment, Yubari became the mother ship of various types of cruisers in the Japanese Navy. The total tonnage of the Japanese Navy's light cruisers was 74,300 tons, and the 100,500-ton limit of 100,500 tons in the Treaty of London was still 26,200 tons, so the Japanese Navy decided to use these tonnages to build four 8,500-ton Mogami-class cruisers to replace the 'Tone' and 'Chikuma' class light cruisers built in the Meiji period from 1930 to 1931. At present, the caliber of the main guns of the light cruisers of the major naval countries is mostly 6 inches, and that of Germany is 5.9 inches. The Japanese Navy, out of consideration of the Japanese physique, adopted 140 mm guns on early light cruisers, whose shells weighed 37 kg, lighter than the 45 kg of 6-inch shells, and could be carried by a single person. After the Treaty of London stipulated that light cruisers could have a maximum gun caliber of 155 mm (6.1 inches), the Japanese Navy was the first to carry 15 155 mm guns on the Mogami-class cruisers. ”…,

"As far as the current Japanese Navy is concerned, the technical performance and armament indicators of its capital ships after modification are not much different from similar warships of other naval powers, and the newly built cruisers have clearly reflected the tendency to strengthen armament. As far as the 10,000-ton treaty-type cruisers are concerned, the Japanese Navy's 'Myoko' and 'Takao' heavy cruisers have two more main guns than most of the British, French, and Italian navies, and one more than the US Navy's heavy cruisers except the 'Pensacola' class, and the number of main turrets is the largest among the naval powers at present. In addition, the armament of the Japanese ships reflected the idea of attaching importance to torpedo warfare, and the heavy cruisers were also equipped with more than 10 large-caliber torpedo tubes. However, the destroyers and other small warships used in torpedo warfare were most thoroughly realized in the Japanese Navy. Because the night torpedo battle on the eve of the decisive battle was of great significance to the Japanese Navy in this 'nine-dan operation', the establishment of a powerful torpedo force has always been the goal pursued by the Japanese Navy, so the Japanese have put a lot of effort into this area and achieved great results. ”

In addition, the Japanese Navy's positioning of light cruisers was different from that of the British Navy, because Japan did not have as many overseas colonies and trade rights as Britain, so it used light cruisers as the backbone of the torpedo team and played the role of destroyers in the British Navy. This also requires our attention. ”

"Let's talk about the Japanese destroyers. Here are the photos. An officer turned on the slide projector and put the processed photo on it, "The 'Blowing Snow' class large destroyer can be said to be the product of the painstaking design of the Japanese Navy technicians, and its design is led by the 'ghost talent' Fujimoto Kikuo, but according to the information we have just received, this person has left the Japanese Ship Administration Headquarters. The standard displacement of the 'Fukiyuki' class destroyers is 1,700 tons, which is much higher than the previous Japanese Navy's largest 'Muzuki' class destroyer (the 'Muzuki' class is 1,300 tons), the speed reaches 38 knots, the main gun has been increased from 120 mm to 127 mm, and the torpedo tubes have also been changed to 9, which is half the combat effectiveness of the previous 'Muzuki' class destroyers. In addition, the increase in freeboard and the improvement of the limbo property make it excellent for seaworthiness, and the bridge and mast of this class have also been reshaped, giving it a streamlined and sleek appearance. As you know, most of the specifications of the US and British destroyers are equipped with four 102-mm guns, four 533-mm torpedo tubes, and a displacement of about 1,000 tons. And now, both in terms of tonnage and combat effectiveness, the 'Blowing Snow' class is far superior to its opponents. In addition, in order to reduce the weight of the hull, the hull of the 'Blowing Snow' class uses a lot of welding technology instead of riveting. ”

"Looks good." Someone said.

"There are a total of 24 'Blowing Snow' class destroyers, and they and the four 'Akatsuki' class destroyers that were built later are collectively known as 'special destroyers'. Compared to the Blowing Snow, the Akatsuki-class destroyers have one less boiler and a thinner front chimney. Due to the tendency to complicate the structure of the bridge and the command structure of the artillery battle, the superstructure has become huge, and it is certainly problematic in terms of resilience. ”

"This is a 'Chuchun' class destroyer, which more intensively embodies the idea of strengthening armament. The destroyers of this class have a displacement of 1490 tons, a speed of 36.5 knots, and are armed with five 127-mm guns and nine 610-mm torpedo tubes. In the front, a twin turret and a single turret were arranged in a piggyback manner, and torpedo tubes No. 2 and 3 were also arranged in the middle part in a piggyback manner. In addition, in the case of destroyers, for the first time the 'Early Spring' class was equipped with a torpedo refill device, in order to arrange it, it was necessary to move the No. 2 chimney from the centerline to the starboard side, and the two chimneys had different angles of inclination. ”

"This 'early spring' class destroyer looks very innovative"...,

"However, there are also problems with this 'early spring' class destroyer, you see, with a displacement 300 tons smaller than the 'blowing snow' class, shoehorning in as much heavy weapons and equipment as it, and maintaining a high speed, there will naturally be problems in terms of resilience."

"That's right, on September 18, 1933, when the second ship of the 'Early Spring' class 'Zi Zhiri' was tested at full speed after launching, its maximum inclination angle reached 27 degrees, 10 degrees greater than that of the old destroyer, and it had to be returned to the factory for belly modification immediately after completion. After the shipwreck accident in March last year, it was greatly revised, and now it should be much stronger. ”

While the officers were discussing, a young Chinese naval officer sitting among them sat there silently, not saying a word.

Judging by the ranks, the young officer's rank was undoubtedly the lowest among them, he was only a second lieutenant in the navy. It is unlikely, it is unlikely that he will participate in such a meeting, and he looks like "silence is golden", but what is surprising is that in front of him, like everyone else, there are thick documents and pictures.

"At present, the information on how the Japanese Navy will deal with our Chinese Navy has not yet arrived, but from these warships made by the Japanese, we can roughly guess that he is not far from ten." An officer looked at the young man who was lost in thought, smiled and asked, "Isn't it, Xiao Yang?" ”

"Xiao Yang thought of something, can you talk about it?" Someone asked, and despite the smile of the questioner, the other officers around knew that he had no contempt for the young man.

"Although the Japanese are working hard to develop aircraft carriers, they are not really 'aviation victors,'" said the young naval officer. The final battle between the battleship and the US fleet at the end of this 'nine-stage operation' is proof of this. ”

"That's right." The questioning officer nodded, his eyes flashing with approval.

Yang Zhaozhong, the young naval officer and the eldest son of Finance Minister Yang Shuoming, looked at the picture of the Japanese warship on the wall and said: "But in the future, the way of naval warfare will change, and the role of aircraft will become more and more important, and no matter what plan Japan makes to deal with us, as long as we grasp the right direction, victory will be ours." ”

"What Xiao Yang means is that the future naval battlefield will be the world of aircraft." Another officer said with a smile, "I forgot, many of today's young people are aviation triumphants, and my hardcore 'big ship and giant artillery party' is outdated, hehe." ”

"Xiao Yang is an aviation triumphant, and he was influenced by his father." One officer said with a smile, "After all, it costs less to build an airplane than a super battleship." ”

"Has Xiao Yang calculated, how many planes does an advanced 80,000-ton battleship need to take out?" Another asked jokingly.

"Two hundred is enough." "Of course, these planes have to be equipped with bombs and torpedoes that are powerful enough. ”……，