PS: Thank you for the reward of the book friend "Yousanren", and ask for a recommendation vote ^_^ again

Before and after World War II, Germany was ahead in the field of marine engines, whether it was the diesel engines used in submarines and armored ships or the steam turbines used in large warships, and the Hindenburg-class battleships were larger than the Bismarck-class, so more boilers and steam turbines could be installed, so the power system was naturally very powerful. The boilers and steam turbines used in the Hindenburg-class battleships are all modifications of the models used on the Bismarck-class battleships, and there has been some progress in power, fuel consumption and reliability, a total of 16 high-pressure heavy oil boilers and 4 steam turbines (4 more high-pressure boilers and 1 steam turbine than the Bismarck-class) The design maximum output is as high as 208,000 horsepower, which at first glance is slightly inferior to the American Iowa-class battleships, but due to the excellent quality of German products, Later, the actual maximum output of the Hindenburg-class battleships even exceeded 225,000 horsepower, which was beyond the reach of the Americans, and in an emergency, the Hindenburg-class was able to increase the output to more than 240,000 horsepower in a maximum of 2 hours

Strong horsepower is a good thing, but the shape of the bow also has a great impact on sailing performance, and in this regard, Hu Weidong has a big disagreement with the German designers

Hu Weidong, who has always been a speed supremacist, has a soft spot for the bulbous bow bow that can increase speed, but the Germans still prefer the so-called "Atlantic bow" that they tailor for the harsh sea conditions of the Atlantic, believing that the bulbous bow is less seaworthy in bad sea conditions, and they also feel that the bulbous bow with a convex shape that cannot be equipped with strong armor will become the only weakness on the Hindenburg-class giant ships.

However, Hu Weidong still insisted on recommending the bulbous bow for three main reasons: first, for the Hindenburg-class battleships with a full load displacement of up to 60,000 tons and a stubby shape, the seaworthiness itself is already very good, and there is no need to make a fuss about the bow again; Two. The relatively stubby size of the Hindenburg-class battleships increased the resistance during navigation, so it was more necessary to have a bulbous bow that could greatly reduce the resistance of the Hindenburg class to balance; Third, the two Hindenburg-class battleships built in China mainly operate in the Pacific Ocean and the Indian Ocean. The sea conditions are much better than in the Atlantic, so there is no need to habitually attach too much importance to seaworthiness.

As for the view that the bow of the bulbous bow is too fragile, Hu Weidong believes that the bow is located underwater, and the only weapons that can threaten it are torpedoes and mines. Mines cannot actively attack, leave it alone, and torpedoes. Under normal circumstances, it would be very lucky to be able to hit a warship with a few hits, but where would it be so coincidental to hit the bulbous bow? It is important to know that the fragility of the bulbous bow is only relative, in fact, with the sturdy materials used, even without armor protection, the torpedo hit site must be very close to it to cause effective damage. What's more, even if the bulbous bow is really damaged, as long as there is no major problem with the damage management, it will only affect the speed. It will not pose a fatal threat to the safety of warships, at least it is much better than such a major hidden danger as the rudder jamming of a Bismarck-class battleship, there is no perfect design in this world, "the lesser of two evils" and "the heavier of two interests", and that's it.

But it was the German designers who really changed their minds. But it was still Hu Weidong's seemingly casual sentence, "Because of the adoption of the concept of key protection and the application of new armor steel, the total armor weight of the Hindenburg-class battleships is even lighter than that of the Bismarck-class battleships, and its power system is much stronger. ”

Everyone's faces turned green, they naturally knew that the mustache was not a reasonable guy, but also a layman, and he was particularly self-righteous, the best way to satisfy him was to make the data as beautiful as possible, as for whether it was good or not in actual combat, it was secondary, and it can be seen from the Bismarck-class battleship, the first high-speed battleship, that the mustache is also a speed control. The bulbous bow was unanimously adopted, a change that increased the design speed of the Hindenburg-class battleship to 32 knots, surpassing any other battleship in history, and its actual maximum speed was as high as 32.6 knots. And if necessary, the Hindenburg-class battleships can even increase their power to more than 240,000 horsepower in a maximum of 2 hours, thus gaining a terrifying speed of more than 34 knots, let alone battleships, even aircraft carriers and battle cruisers with speed advantages can hardly escape

However, while the bulbous bow significantly increased the maximum speed of the Hindenburg-class battleships, it also correspondingly reduced the low-speed navigation performance of the Hindenburg-class battleships, thus affecting the cruising speed and endurance of the Hindenburg-class battleships to a certain extent. However, due to the Hindenburg class's large hull and much lighter overall armor weight, its maximum fuel load far exceeds that of any battleship in history, more than offset the disadvantages of the bulbous bow, which can be fully realized by looking at its endurance of 15,000 nautical miles/16 knots.

After repeated discussions and deliberations, the basic design of the Hindenburg-class battleship was finally determined, and its approximate parameters were as follows:

Displacement: standard / 56,000 tons, full load / 68,000 tons.

Dimensions: 256 meters long, 36 meters wide, 9.8 meters draft.

Power: 16 high-pressure heavy oil boilers, 4 steam turbine engines, the main engine design maximum power of 208,000 horsepower (due to the excellent quality of German products, the actual maximum output of the Hindenburg-class battleships built later exceeded 225,000 horsepower, and the two-hour limit output exceeded 240,000 horsepower.) ）

Speed: 32 knots (the actual maximum speed reached 32.6 knots, and the maximum speed of the 2-hour limit exceeded 34 knots.) ）

Endurance: 15,000 nautical miles / 16 knots.

Main guns: 3 triple 406 mm L50 (calculated according to German standards) (2 in the front and 1 in the rear).

Secondary guns: 12 twin 128mm high-level dual-purpose guns with 25mm turret armor thickness.

Air defense: 12 twin 37mm anti-aircraft guns, 12 single-mounted 37mm anti-aircraft guns, 36 twin 20mm anti-aircraft guns, 8 7-barreled 20mm "phalanx" close anti-aircraft guns.

Anti-submarine: 4 rocket depth launchers (maximum range 1500 meters), 4 hedgehog guns (maximum range 300 meters).

Armor: side armor belt (maximum) 280mm, main turret 200mm-360mm, ammunition compartment roof 320mm, horizontal armor 150mm, conning tower (maximum) 420mm.

Carrier-based aircraft: 4 water reconnaissance aircraft, 2 catapults.

Crew: 2250 people. (To be continued.) )