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Theoretically, if the radar of the 051 destroyer can detect the Kongo, it means that the two are in a straight line and the Kongo can also see the destroyer.

However, the sea level cannot be endless. There are waves, water vapor, sunlight, etc., which are all factors that affect visual perception.

Therefore, if you only rely on visual observation, no matter how high the magnification of your telescope is, it is almost impossible to see at the same distance as radar.

"This is weird. The bomb was clearly coming from that direction, but I can't see anything!"

At that time, even Germany had not yet developed missiles for actual combat, so Fujita certainly didn't know about missiles.

He just thought it was the enemy's heavy artillery firing at a long distance!

"Contact Commander Takasu Shiro and request to send a destroyer to conduct reconnaissance and find out the source of the bomb! Turn the rudder, the Kongo has been severely damaged and cannot continue to perform the mission. Return to the Ceylon base for repairs!"

In the end, Fujita could only give such an order.

But just as he turned around, another black dot appeared in the distance, and instantly arrived diagonally above the severely damaged King Kong, and then fell rapidly.

The position was just right, and it hit the side of the ship that had been hit before, Dadong.

After a loud explosion, the two holes several meters wide connected together to form a large hole about 10 meters wide.

The fire, which had not been extinguished, suddenly grew several times larger, enveloping the bridge of the Kongo, and the hull rapidly tilted to the side, almost reaching 30 degrees, and the angle was still increasing.

Such a large tilt angle destined the Kongo to sink.

"Quick, everyone get on the lifeboat and abandon the battleship!"

The telegram was not sent. This was the last order Fujita issued before his death.

服役时间长达30年的3万吨级别金刚号战列舰，就这样在孟加拉湾中被105号051级驱逐舰用两枚海鹰1号导弹结束了生命，全舰1100余人，只有100余人通过救生艇逃脱。

The main reason was that it sank too quickly, and most people were crushed into the water by the rapidly overturned hull.

If Fujita knew that this was just Xu Le's training demonstration for the fleet, he would never be willing to accept it in hell!

The Kongo was just the beginning. Another battleship, the Haruna, was luckier. Because of insufficient fuel, it sailed to Chedoba Island for replenishment.

But the rest of the Japanese warships and submarines in the Bay of Bengal were not so lucky.

In order to defend against Xu's navy, the Japanese used almost all of their naval vessels, including six I-class submarines from the 18th and 19th diving teams of the Southern Dispatched Fleet.

Just 30 nautical miles east-southeast of the Kongo, the I-53 submarine was carrying out a patrol mission.

Their mission is to swim underwater, and once they find a ship that is not their own, they can fire a torpedo to sink it without asking for permission.

The mentality of the Japanese on this boat was similar to that of the King Kong. They arrived in this sea area a month ago and have never stopped searching.

But it has not been found.

This was also the order given by Xu Le. Before the sea route to the West was opened, all Burmese ships were not allowed to leave 10 nautical miles from the coast.

At this time, submarine detection relies on sonar. The detection range of active sonar is only 1 nautical mile, and the detection range of passive sonar is at most 3 nautical miles.

Although the sonar system of the 051 destroyer is not advanced and its maximum detection distance is only 7 kilometers, it is still much better than that of the Japanese submarine.

At this time, the I-53 submarine was still underwater and had not surfaced, so it had no idea that a modern destroyer was not far above their heads.

This destroyer is the No. 3 ship of the 107rd Destroyer Squadron, the same ship as Xu Lenna.

Two destroyer squadrons, totaling six destroyers, advanced in a fan-shaped manner in the upper, middle and lower directions of the Bay of Bengal. Sonar and various radars monitored in real time, allowing them to launch an all-round attack on the Japanese in any situation.

"Captain, sonar reports that an enemy submarine has been spotted, bearing 132, distance 4 nautical miles."

The captain narrowed his eyes and said, "What luck! We encountered a submarine so soon. It would be great if we could encounter a Japanese battleship like No. 105 did. It would be so exciting to fight!

Pass on my order, advance at full speed towards the enemy submarine's coordinates, anti-submarine soldiers, get ready, once it's within range, fire anti-submarine rocket depth charges!"

If we were to say who the biggest enemy of a submarine is, it would be a destroyer. Once encountered, there would be almost no room for fight back, and the result would be almost death.

Not to mention that the 051 destroyer also has a level of suppression!

其有2座12管204毫米反潜火箭深弹发射装置，射程达到1千米，最大下潜深度250米。

No submarine in the world today can escape from the coverage of 12 rocket depth charges.

The I-53 submarine is a Type 2300A submarine of the Japanese Kaidai. It has an underwater displacement of 8 tons, a maximum underwater speed of 8 knots, 120 torpedo tubes and a 60mm cannon deck weapon, and a maximum diving depth of only meters.

This naval operation of Xu's army involves elements of actual combat training, so apart from missiles, all warships must do everything possible to familiarize themselves with the use of conventional weapons.

Captain 107 did not use anti-submarine torpedoes with a range of 6 kilometers because this had been trained at the base. The training for anti-submarine depth charges was more complicated.

So he seized this opportunity to experience the use of anti-submarine rockets and depth charges.

Of course, to use these two anti-submarine weapons, one must maintain a very close distance to the submarine. The Japanese naturally detected the navigation noise coming from Ship 107 through sonar.

This is the passive sonar system. The sound has only a one-way track, so the reflection detection distance is farther than that of the active sonar system.

"Report, sonar detected surface vessel."

After hearing the report, the captain of I-53 was overjoyed and shouted, "We have surfaced to the periscope depth. After waiting for so long, we finally got the chance to fight!"

This is another disadvantage of today’s sonar. It can only detect whether there is a target, but it has no idea what the target is.

Therefore, the submarine's first reaction after detecting a target is to surface, observe what is on the other side through the periscope, and then dive again, either to escape or to launch a torpedo!

After launching a torpedo, you also need to surface and observe the impact.

The I-53 submarine surfaced with a strong fighting spirit, but they didn't know that all their actions were captured by the 107 destroyer.

Just when they were halfway up, 12 anti-submarine rockets were launched.

The result is obvious. At such a close distance, it is certain that they will be hit by rocket depth bomb fragments and sea water shock waves.