12/04/2025
German submarines known as Yubot were a key part of national socialist naval strategy. They were small cramped vessels where young sailors spent weeks underwater attacking enemy convoys. Commanders like Otto Cretchmer, Gaprin and Eric Top led these missions under very difficult conditions.
The routine on a yubot was brutally strict and exhausting. Watch shifts were divided into 4-hour cycles in an environment where personal space was non-existent, and the smells of oil, sweat, and rationed food permeated everything. They slept in shifts on warm beds shared by three or more sailors, ate canned or dehydrated food, and didn't see sunlight for weeks.
How did German sailors live? How did they die? What remained of them and their machines after the war? That's why today we'll tell you about the brutal life inside N**i submarines and what happened to them after the war. The abyssal strategy, the importance of German hubot in World War II. At the beginning of the 20th century, the naval world was still dominated by large battleships and surface cruisers.
However, a radical change was brewing in Germany's shipyards, a submarine fleet designed not only to monitor, but to destroy from the depths. With the first world war, German submarines known as unaboot or simply yubot proved to be a strategic threat. But it was in World War II that they reached their most lethal form and greatest prominence.
When Adolf Hi**er ordered the reactivation of German military power, the marine, the navy of the Third Reich, received clear instructions to build a modern, fast, discrete fleet capable of disrupting enemy maritime trade. Thus, the Yubot were reborn, led by Admiral Carl Donut, a veteran commander who fully understood the destructive potential of submarine warfare. Donuts had a clear vision.
He wanted to use yubot to implement the so-called war of attrition, also known as privateeering. The idea was simple. Sink merchant ships faster than the allies could build them. It wasn't just about torpedoing military targets, but also cutting off vital supplies, especially those crossing the Atlantic to Great Britain. The plan worked, at least at first.
During the first years of the war, Ubot wre havoc. The most widely used models, such as the Type 7, became the true workh horses of the Atlantic. Fast, reliable, and relatively cheap to produce, these submarines had a range of over 8,000 km, could dive to 220 m deep, and were armed with lethal torpedoes capable of sinking freighters weighing tens of thousands of tons.
The first successes were not long in coming. In 1940 and 1941, the Ubot operated with almost ghostly effectiveness. They sailed at night, hid in the fog, struck undetected, and disappeared into the abyss without a trace. This period was known as the happy era for German submariners, as casualties were few, and the number of ships sunk grew week after week.
Entire convoys were devastated in the Mid-Atlantic with little the es**rts could do. Tactics also evolved. Donuts introduced the wolfpack system or rud tactic, a strategy in which several hubot work together to attack a convoy from different points, saturating enemy defenses. This technique, although difficult to coordinate, had a devastating effect. The importance of the yubot was not only tactical but symbolic.
For the third Reich, every yubot returning to port was greeted as a hero. The crews were celebrated, decorated, and used in N**i propaganda. Young Germans dreamed of becoming Yuboat officers, little imagining the brutality that lay beneath the surface. But while the Ubot were reaping successes, the Allies did not stand idly by. From 1942 onward, the tide began to turn.
The introduction of new technologies such as highfrequency radar, advanced sonar, and attacks from es**rt carriers drastically weakened the effectiveness of Ubot. Anti-ubmarine warfare evolved at breakneck speed. Convoys began to be better es**rted. British intelligence managed to decipher German communication codes thanks to the Enigma machine, making it possible to anticipate the movements of Yubot flotillas.
Furthermore, aerial advances marked a turning point. Aircraft capable of long-d distanceance patrols began to cover the previously blind areas of the Atlantic, where hubot operated more freely. Within months, what had once been an advantage became a deadly hunting ground. The numbers are stark.
Of the nearly 1,150 Ubot that Germany built during the war, around 780 were destroyed. The mortality rate among crews exceeded 75%, making it one of the highest of any armed force during the conflict. Many submariners never returned. They sank silently without warning with barely seconds to react. Yet until the end of the conflict, Hi**er insisted on keeping this submarine force active.
He even ordered the development of revolutionary models such as the Type 21, considered the first truly modern submarine capable of operating submerged for days without needing to surface thanks to its improved batterie...
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