The background of this book is the story from World War I to World War II, during which naval guns were mainly used as a means of attack for warships! Unlike now, which are dominated by anti-ship missiles, naval artillery becomes auxiliary!

So what exactly is the shells of the ship's guns, the range, the armor piercing, the excessive penetration, the hit to the core? What is the difference between a battleship, a cruiser, a battlecruiser, an aircraft carrier, a destroyer! And how exactly does the so-called damage management work?

Battleships: Divided into front dreadnoughts, and treaty type good and rear dreadnoughts. Pen, fun, pavilion www. biquge。 info In the early stage, when the battleship was a wooden sailing ship, there was a rule in the navy that in the battle, it was the battleship that maintained a battle line, which was the origin of the battleship's name, and the battleship also developed rapidly after entering the steam age, the iron hull replaced the wooden hull, the steam power replaced the sail, the rifled gun replaced the smoothbore gun, and the means of attack were no longer the wooden hull could withstand it! The great powers were developing new warships, and the former dreadnoughts were born, and that was when the battleship was turned into ironclads! The thickness of the armor was also greatly increased, and at that time the battleship only had a speed of about 15 knots, which was very slow, and the endurance was also a big problem, so it could only fight in the near sea, and there were frequent breakdowns! The main guns were not on the central axis of the battleship, but were distributed around the hull, which led to the fact that the armor could not effectively protect the ammunition depot, wasting a lot of displacement! Later, the South Carolina-class battleships of the United States adopted the "all-heavy artillery" design for the first time, and the main guns were arranged on a line of the central axis, and the main guns could be fired in a side-chord salvo to maximize the firepower. In essence, the battleship is a large surface ship with speed, artillery, and balance of protection, and later due to the signing of the Washington Treaty, the displacement of the battleship was limited, and the caliber of the main gun was limited. Later, the Imperial Japanese paid attention to the creation of the world's largest battleship, the Yamato-class, and built a total of two, one named Yamato and the other Musashi! All of them were sunk by the carrier-based aircraft of the US aircraft carriers, and they made no achievements in the war and wasted huge financial resources! The Japanese frantically built the world's largest naval gun, a 460 mm caliber cannon, and armed it on the Yamato-class battleships! Still can't stop its fate of failure!

The so-called armor piercing is to penetrate the protective armor and damage the important parts inside the armor! On the battleship, the boiler storage, engine room, ammunition depot, and captain's room are all protected by heavy armor, ordinary shells can't hurt it at all, but armor-piercing shells can, armor-piercing shells use delayed fuzes, and the fuses can only be ignited after penetrating armor of sufficient thickness, and they don't explode immediately, it takes a little time to send the shells to a deep enough position to explode, and at that time the world basically used a fuse delay of 0.33 seconds!

Excessive breakdown means that the shell passes harmlessly through the hull, although it hits the target, but the thickness of the penetrated armor is not enough to ignite the fuse, or the fuse ignites, and passes through the other end of the hull at the time of delayed explosion, and there is no explosion!

Hitting the core is to penetrate the important parts of the battleship's armor protection, such as the ammunition depot and boiler compartment, damage the important parts of the battleship, cause heavy damage, and even sink the battleship!

The angle required for the shell to penetrate the armor, and if the angle is not good, it will lead to ricochet, the reason is that the angle of incidence is too small, and the force of the shell is changed by the armor, which changes the direction of attack of the shell, resulting in ricochet!

There are many reasons for smashing, among which the strength of the projectile is insufficient, the caliber of the naval gun is small, and the thickness of the armor is large, which leads to the shell being crushed!