From the number of German submarine losses in World War II, it can be very clear that the Allied anti-submarine forces have increased, and this loss was actually very low in the three years from 1939 to 1941, the number of submarines lost in 1939 was 2.2, the number of monthly losses in 40 years was 1.8 ships, and the number of monthly losses in 41 years was 2.9 ships. Pen, fun, pavilion www. biquge。 infoIn the glorious moment of 41 years, the average monthly submarine ownership in Germany was about 158, and the proportion of submarine losses was only 1.8%! That's a very low number! But then, the good days of German submarines finally came to an end!

In 1942, the average monthly loss of German submarines was 7.1, and the monthly number of German submarines at this time was about 333. In '43, when the monthly number of German submarines increased to 425, the number of losses increased to 19.8. In the following two years, the number of German submarines remained almost at this number, and the number of losses was almost 20, and of course, the monthly losses increased to 29 in 45 years!

Don't forget, by the year 44 and '45, the combat range of German submarines was much smaller, in 42, hundreds of German submarines fought against the Allied anti-submarine forces in the vast Atlantic, and in 1943 there was the largest single confrontation between the convoy and the U-boats in history!

Between March 16 and 19, 1943. The HX-129 and SC-122 are two large transport fleets in the Atlantic, consisting of more than 110 transport ships of all types, and the size of this fleet is completely dwarfed by the thunderous PQ-17 transport fleet.

Over the course of four days, the huge fleet was besieged by three waves of wolves with 41 U-boats, and eventually sank 22 merchant ships with a total tonnage of 147,000 tons. And the German submarine lost only 1 unit! This is the biggest victory that the wolves have achieved on their own! But alas, this is the last glory before destruction! Because in May 1943, after the Black May, Dönitz decided to temporarily withdraw the submarine force from the Atlantic Ocean.

By September 1943, when Dönitz's wolves tried to return to the Atlantic with new equipment, to little avail, the loss of 27 submarines in October and 18 submarines in November had brought Dönitz's months of efforts back into nothingness, and he ordered to retreat again at the end ......of the year. At this point, the era of the U-boat in the Atlantic was over.

If we compare the performance of German submarines at the end of World War 1, we can find that although the number of German submarines sunk in the later period of World War 1 was relatively small, they still worked hard to fight each other in the depths of the ocean, such as the U151 submarine that attacked on April 14, 1918. During the 94-day voyage, the submarine sailed 10,915 nautical miles and sank 23 merchant ships, one with a gross tonnage of 61,000 tons.

In addition to the U151, there are also submarines such as the U140, U152, and U156. These submarines sank more than 20,000 to 30,000 tons of merchant ships. You must know that at that time, there were only a few German submarines capable of ocean-going voyages, and there were only 3 ocean-going submarines with a range of more than 12,000 nautical miles, and all the submarines that had the opportunity to attack before the war were only a dozen or so. The fact that so many submarines have reached the west coast of the United States and made a decent record can only show one problem, that is, even in the late stage of the war, the German submarines still maintained a high level of vitality, and the sea and air blockade could only make the submarines feel pressure and lose the opportunity to attack the target, but they still could not effectively destroy these submarines!

So, in general, the large-scale submarine warfare of this era is quite deadly even for a big country like Britain, especially in this plane, when the United States is already on the same page as the British, how can Britain get enough supplies without the United States in World War 1? And how can there be enough escort warships? Without the flat-plate destroyers of the Americans, how can the vast Atlantic Ocean be defended?

However, it was still early days, and the German Navy's understanding of the submarine as a weapon was still very backward, and in this case, the prince considered it necessary to remind the German Navy as the future head of the second largest family in Germany. The German royal family can own a royal sightseeing yacht, so why not have an underwater sightseeing yacht that can dive? A yacht-marked ship has been built at the Brom-Forss shipyard, and the submarine, known as the Swordfish, will be the first in Germany to be in combat significance.

The first German submarine U1 was launched in 1906, with a surface displacement of only 238 tons, and an underwater displacement of only 283 tons is a paraffin oil powered submarine, using a gasoline engine. The fuel load is only 20 tons, and the surface range can only go 1500 nautical miles at 10 knots. In terms of weapons, there are only 1 450mm fish **** and 3 torpedo ....... From the point of view of performance, except as a training experimental boat, it has no other role, and submarines of the same period have many problems.

For example, the gasoline engine cylinder seal is not good, for example, there may be water leakage problems, working on the submarine in the early days is no different from adventure, the space inside the submarine is sealed, and some gasoline engines and diesel engines at that time because of the loose sealing rubber ring, may cause the cabin to be filled with a lot of exhaust gas, resulting in suffocation of the crew. Submarines with better conditions were equipped with a set of gas leakage inspection devices to check for exhaust gases. And if not, then it is up to the crew to figure it out on their own.

For example, the crew of the British Royal Navy raised the guinea pig with their own salary, and then threw the guinea pig into the compartment where it could leak, and when the mouse was found to be abnormal, it means that the air in the compartment was ...... problematic. Well, submariners have been a chore until now, let alone then.

In this plane, the submarine built by the Brom-Foss shipyard has a surface displacement of 500 tons, an underwater displacement of 650 tons, a hull length of 60 meters, a width of 6 meters and a height of 3.6 meters. In terms of size, it is similar to the U9 submarine of later generations, the submarine hull uses a boat-type hull, powered by 4 diesel engines when sailing on the water, the total attack rate is 2000 horsepower, the maximum surface speed is more than 17 knots, and the electric motor is powered when sailing underwater, the maximum output horsepower is 1200 horsepower, and the maximum underwater speed is about 9 knots. With a fuel load of 72 tons, it has a range of 7,000 nautical miles on the water when sailing at a speed of 8 knots. It can be used as an offshore submarine now.

In terms of armament, there are 4 450mm torpedo tubes. 2 in the front and 2 in the rear, a total of 8 torpedoes were armed, and it was also planned to install a 105mm deck gun. In terms of firepower, this class of submarines is very close to the historical U51 submarine. It's just a little smaller.

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