Although submarines were known as underwater assassins, after equipment specifically designed to deal with submarines, such as Sonar, had been invented, their concealment and safety were no longer what they used to be. Previous anti-submarine warfare had mostly relied on experience. Modern Sonar, however, could precisely locate submarines and guide warships in their attacks. Therefore, if submarines could not make progress in noise reduction, their combat power would be greatly constrained.
Were not later-generation submarines also constantly striving to reduce noise?
Thud! Thud! Thud!
Dull explosions rang out continuously beneath the sea. The American submarines hiding underwater were like small boats caught in a storm. The shockwaves from the depth-charge explosions swept up seawater and crushed against the submarines. If their hulls could not hold, there would be nothing but wrecked vessels and dead men.
"God! What is going on? The Germans' depth charges are practically exploding right on our heels!" Inside an American submarine, the Submarine Captain's face had turned deathly pale. Although he had long expected this mission to carry enormous risks, he had not expected them to be on the verge of destruction before the German fleet's main force even arrived.
"Sir, could the Germans have some weapon capable of detecting submarines underwater? Otherwise, how could their depth charges be so accurate? We have stayed underwater this entire time and never surfaced," the executive officer said.
Creak! Creak!
The submarine's pressure hull groaned continuously, as though it were about to give way. Once the pressure hull was breached, the submarine would become an iron coffin, burying every one of them within it.
"God! I don't want to die! I don't want to be buried on the sunless seabed!" One submariner was almost in tears.
However, their prayers were utterly useless.
A depth charge exploded less than five