Before the terrible thoughts in the Black Island Turtle man were driven away, a staff officer from the Central Pacific Fleet sent him an even more unexpected news: the detective on the Diamond Hill found dozens of enemy ships approaching Oahu!

"What? Are the Americans really going to attack Oahu?" The Black Island Turtle Man exclaimed in surprise, "Don't they care about death and injury?"

The Mikawa Army on the side snorted coldly: "Even if the Americans don't care about death and injury, Oahu Island is not something they can capture... Oahu Fortress is enough to withstand 1 million, no, it is 10 million US troops!"

The Black Island Turtle Man, who was a little out of control just now, also came back to his senses and said with a heavy emphasis: "What Commander Sanchuan said is very true. The Oahu Fortress is as solid as a rock. If the US military dares to invade, even if there are tens of millions of people, they will be killed or injured!"

He and Sanchuan now do not regard "million enemies" as a big number that can flood the Hawaiian Islands, because the US troops attacking Hawaii now are in square nautical miles, and the number of people must exceed 1 million. The fastest update is updated.

Now that the American surface ships have arrived, Kuroshima Kameto and Mikawa Junichi naturally cannot watch the battle leisurely. The two immediately returned to the combat room of the Central Pacific Fleet Command. At this time, the sick Takasu Shiro had already arrived and was sitting in a chair and listening to the fleet's first staff member reporting on the situation.

Seeing Kuroshima and Mikawa come in, Takasu Shiro asked: "Kukijima, Mikawa, what's going on outside?"

"His Excellency Commander, the Americans launched a suicide attack on the Navy's First Airport. Their suicide planes seemed to hit the oil depot and triggered a fire."

The Black Island Turtle Man frowned and reported that the airport runway was bombed with several large pits, Black Island didn't care, because there were four large airports on Oahu that could take off and land in me264. Moreover, there were many Japanese engineers and North Koreans on the island, so they could quickly fill the pit.

However, the oil depot was blown up and it was heartbreaking. Tens of thousands of tons of aviation gasoline were stored in the oil depot at the First Navy Airport. If it was burned, the loss would be too great. In fact, the oil depot was fine. The fire seen on Black Island was caused by napalm bombs. A total of 9 tons of napalm bombs and the BQ-7 suicide plane crashed into an anti-aircraft artillery position, burning hundreds of Japanese artillery soldiers alive.

"Baga!" Takasu Shiro didn't know that the oil depot was fine, so he cursed in a low voice.

The Sanchuan Army said worriedly: "God General, the detective just now discovered that dozens of American ships were approaching Oahu. They are likely to block Pearl Harbor with mines. If they succeed, the 8th Fleet will not be able to get out."

Mikawa was right this time. One of the purposes of Halsey launching a night attack tonight was to lock the 8th Japanese fleet into Pearl Harbor, so that Niho Island would be easy to attack. In order to achieve this goal, dozens of "Little Shark"-class submarines will be laid outside Pearl Harbor tonight!

The target detected by Japanese detectives is actually the "Gridley" class rapid destroyer commanded by Arley Burke to cover the submarine operation. Each destroyer carries 16 533mm torpedoes and 4 127mm cannons, which are used to deal with Japanese submarines or destroyers.

If Mikawa Junichi's fleet was going to sea now, it would not only be attacked by dozens of American "heavy thunder ships", but also the underwater American submarines would also launch attacks, and the losses would definitely be very heavy.

"Don't worry," Takasu Shiro said. "After dawn, minesweeper boats, submarines and East China Sea anti-submarine patrol aircraft will be sent to clean up the waters outside, and the 8th Fleet will be able to leave the port safely."

Takasu's plan is actually nothing wrong. Warships are very valuable to the Japanese Navy and cannot take risks at will. However, he ignored the huge numerical advantage of American ships. There were 51 American "Little Shark" class submarines that were mined outside Pearl Harbor tonight (in this time and space, because the Pacific and Atlantic sea control are all in the hands of the enemy, the Americans have built submarines since 1942, and the Little Shark class has built more than 300 as the main submarine). Each "Little Shark" carries 10 mk-15 torpedoes and 40 water mines.

In other words, 51 submarines can lay 2,040 mines per night, and these mines are not traditional trigger mines, but non-triggered magnetic mines. These mines are not lying on the water surface, but sinking to the bottom of the water. As long as Japanese ships pass by nearby, they will detonate mines because of their own magnetic detonation mines. This mine was invented by Japan's ally Germany. At the beginning of the war in 1939, it was put into the battlefield and sank many British ships. However, several magnetic mines were seized by the British (this is inevitable, because magnetic mines are all laid in shallow seas, so there is a problem of high tides and ebbs. Some mines were thrown into the water when the tide is long, and they reveal their true colors as soon as the tide is gone). The British then copied the magnetic mines and gave them to the United States.

The magnetic mines imitated by the United States are now used in the Battle of the Hawaiian Islands. Not only are Pearl Harbor completely blocked by these mines, but even the nearby Honolulu port was blocked into a dead port.

Not only were the cruisers and destroyers of the 8th Fleet unable to leave Pearl Harbor, but even the small ships sent to sweep mines and destroy submarines were sank 8 in a row!

At the same time, American submarines sent to Japan's offshore and the Nanyang Islands began to lay down submerged magnetic water mines or anchor mines on various waterways with shallow water levels to block Japan's foreign trade.

...

"It's a magnetic mine!"

The news that minesweeping boats and submarines that belonged to the Central Pacific fleet were sunk to Japan, and Yamamoto Iroku immediately knew what was going on.

Because on the Atlantic battlefield, Americans and Europeans have long used magnetic mines to compete with each other, and even developed audio mines and pressure mines based on magnetic mines.

Although the United States has not used magnetic mines much in the Pacific battlefield, Iroku Yamamoto, who is very concerned about the Atlantic battlefield, still noticed the situation of mine wars in Europe and the United States. He also instructed the Japanese Navy delegation to seek ways to crack magnetic mines.

In fact, there is no good idea. One is the demagnetization of the ship; the other is to use electromagnetic minesweepers to lure explosions. The former is a big project. There is no time to do it during wartime, so you can only demagnetize professional minesweepers first. The latter is also very troublesome and you have to make many towed electromagnetic minesweepers. Moreover, electromagnetic minesweepers may be destroyed and must be replaced at any time.

In addition, the method of using electromagnetic minesweepers to lure water mines is not 100% successful. After all, Americans and Europeans have used magnetic mines to hurt each other for nearly two years, and have also found some ways to deal with electromagnetic minesweepers.

Therefore, mine-sweeping operations are a job that requires a lot of manpower, material resources and patience.

"Marson, recently, many ships were injured and sunk by mines near the Malacca Strait in the Toyogo Waterway, Kii Waterway, Sagami Bay, and Tokyo Bay." Naval Command Deputy Director Kazuichi Ito said to Yamamoto Iroji with some concern. "In addition, Americans' submarine activities are becoming increasingly rampant. If effective measures cannot be taken, there will be a shortage of resources in the local area soon."

Yamamoto Iroku shook his head. To ensure the smooth transportation of local resources, there is actually no good way, just invest more resources from the Navy.

The first thing is to invest more destroyers and anti-submarine patrol ships. Now the United States has invested in the Western Pacific and the South China Sea islands with hundreds of submarines! It cannot be dealt with by dozens of old destroyers in any way. It must be invested several times the escort destroyers.

Secondly, a sufficient number of minesweepers and deporters must be invested. This involves not only the construction of wooden-hulled ships and electromagnetic minesweepers, but also personnel training.

According to the experience of mine warfare in Europe and the United States and submarine warfare, if the enemy invests one submarine to lay mines, its own side needs at least 3 minesweepers to sweep mines to ensure safety.

Moreover, submarines that lay mines are proactive, and minesweepers are passive. To ensure the absolute safety of the waterway, a certain number of minesweepers must be maintained in every area that may be mined.

For Japan, it is impossible to deploy thousands of wooden minesweepers in any case. In addition, it must be equipped with a sufficient number of submarines to protect the minesweepers from being sunk by the submarines.

Escort destroyers are more important, and the number must be increased to at least 300 to ensure the suppression of the increasingly rampant American submarines.

But where do so many minesweepers, submarines, destroyers and qualified naval officers and soldiers come from?

Yamamoto Izuru, the Navy Minister, also felt a little helpless!

"Passive defense is always not a solution," Navy Command Secretary Nagano shook his head and said, "taking proactive is the only effective solution to overcome the lack of national strength. For the increasingly rampant US submarine activities, the only way to switch to Australia after winning the "Jet One Operation" will be to force Australia to expel the US troops and negotiate peace with our empire."

This is indeed a solution, which not only solves the headache-inducing American submarines because at least more than half of American submarines are based on Australia, but also solves the possible problem of US strategic bombing of the Nanyang oilfield, which is indeed a one-time and for all.

"First airlift a few sets of five-type electromagnetic minesweepers (just copied) to Oahu Island." Yamamoto Iroku also knew that Nagano was talking about the only solution. Japan cannot fight like Europe and the United States, so it can only seek victory first and then seek complete.

"Also..." Yamamoto Iroku said, "The American attack on Oahu really puts us in a dilemma."
Chapter completed!