Chapter 1847： Lizard Cannon and Concrete Cannonball

Marin doesn't know much about the origin of the tactics of the Calais and France's escape from the wind. Before, he was only a European player, not a big sailing fan. Therefore, he really didn't know some situations. So much so that in the early 16th century, the Calais of the French navy played tricks on Britain for decades, and he did not know it. It is naturally unclear to Bidus.

It's no wonder that later generations of China have not described European history in detail. Speaking of naval warfare, they are often mentioned after the Great Battle of Britain and the West. As for the naval battle before the British-Western Naval War, there is often little description. Only the hardest fans of the nautical department will know the secrets.

Therefore, when John Rafi passed the news of Bidus's appearance and Calais boat tactics back to Aurich, Marin did not pay much attention to it. However, after careful deliberation, Marin also had to admit that this tactic may really make England suffer.

After all, the warships in England are all original Kirk sailboats recruited from the people, and the hull is relatively thin. It's too much to eat a 50-pound stone projectile.

Then, he became interested in Venice's lizard cannon ...

The Venetian lizard cannon is mainly modeled from Turkey and weighs 7000 pounds and is made of bronze. The shells it fired were stone bombs weighing 50 pounds. Although the defensive ability can't catch up with the iron ball shells, but the weight is there, and whoever hits is unlucky. In particular, the warships with very thin sides on this side did not smash at all.

The lizard cannon is called the lizard cannon because it is ugly, thick and short, and the cannon body is deliberately made into a lizard's mouth. In other words, it is a mortar, that is, the predecessor of the mortar. In Russia, this lizard cannon also has a famous name-the unicorn cannon.

In this era, because of the limitations of the casting process, all large-caliber artillery is almost a short and thick mortar. Because long-barreled large-caliber guns could not be made in this era.

Marin saw the pictures from Italy, and was surprised by the ugly appearance of the lizard cannon-Nima, this is a gasoline barrel with a lot of thickening in the wall!

Its caliber is not much different from that of the gasoline barrel, that is, the pipe wall is much thicker than the gasoline barrel. But the length of the two is similar, both are short and thick.

However, this artillery is made of bronze, and the difficulty of casting is much less than that of iron guns. In short, as long as the wall of the tube is made thick enough, a large-caliber mortar can be cast out.

However, the range of this mortar is generally relatively short, only a few hundred meters. In general naval battles, you need to get close to the enemy ship and give a shot.

However, because of the large recoil of large caliber artillery. In order to prevent the ship from falling apart, this large-caliber mortar can only be placed in the place where the bow structure is the strongest. If it is placed on the side, it is not easy to overturn the ship, or it is easy to let the ship fall apart.

Moreover, because copper is easy to soften after overheating. If you force a continuous shot, the gun body will easily deform when it overheats. Therefore, the bronze mortar cannot fire continuously. After each shot, if you feel the gun body is hot, you will first use a mop to cool the gun body to avoid launching when it is overheated, causing the barrel to deform.

Therefore, the firing speed of this bronze mortar gun is very touching, it usually takes several minutes to fire, and the whole ship generally has only one lizard gun ...

Therefore, the efficiency of lizard cannons is generally not high. But if it is hit once, it will be uncomfortable ...

With the current structural strength of ships in various countries, they were hit by a 50-pound stone projectile, and the ships almost fell apart. A better boat will also be seriously injured. If you are hit on the side, you will basically leak sideways ... real side leakage ...

Marin deduced it again and found that this lizard cannon has a lower design efficiency but better effect. If you can hit the enemy ship, the effect is absolutely bumpy.

Even a 250-class armed merchant ship in the North Sea State may be difficult to resist the attack of a 50-pound stone bomb. Only the North Sea 500-ton warships with special reinforcement and iron skin wrapped on the side can withstand the 50-pound stone projectile without side leakage.

In other words, this lizard cannon has a very good effect in naval battles. Although it is ugly, although it takes a few minutes to refill. However, it is particularly powerful. As long as it hits, there must be a victory.

The only problem is probably that the mortars are all projectiles and it is extremely difficult to aim. To throw an enemy ship in a shot, a high level of shooting is required.

Fortunately, lizard cannons are generally placed on the bow, directly in front of them. Because the ship only swings from side to side, not back and forth, it provides a lot of convenience for the lizard cannon to aim. For naval battles, the aiming of the side guns is the most difficult, because the hull will swing left and right, which provides too much difficulty for aiming.

And the main gun of the bow is much simpler to aim, and the ship will not swing back and forth. But the problem is that the mortar is a projectile, not a flat shot. It is really difficult for ordinary people to aim and shoot ...

But this problem is not difficult for Marin-Venice, as the birthplace of the lizard cannon, must have a master who is proficient in aiming and shooting. At that time, the high-paying dug up to teach the artillery of Beihai ...

...

Right now, the research and development of the Peixan artillery is still in progress, and the North Sea country lacks a large-caliber main gun. If this kind of lizard cannon can be introduced, it is estimated that the results will be brilliant ...

Think about it, if 50-pound shells hit the Portuguese ship, how much more exciting ...

As a result, Marin immediately ordered the introduction of 20 lizard cannons from Venice for use in the bow of 20 500-ton warships.

Once the battle started, the lizard cannons on the 20 warships fired together, as long as the quasi-head is not too bad, it can always destroy one or two Portuguese warships ...

As for why the lizard cannon shoots stone bullets instead of iron balls, Marin also understands. Because, this year's steel production is extremely low. It is extravagant to make a shell made of steel and sink to the bottom of the sea after one shot. You know, 50 pounds of iron can create dozens of steel farm tools ...

Therefore, under the premise of touching steel production, it is justifiable for everyone to choose stone bombs. After all, even if a 50-pound stone sinks to the bottom of the sea after a miss, everyone is not so distressed. What if the 50-pound iron ball sinks into the sea?

After all, ~ www.novelhall.com ~ is still a matter of cost. Because it is a naval battle, the possibility of shells being recovered becomes infinitely small, and the possibility of sinking to the bottom of the sea is very high. If you change to a 50-pound iron ball and drop one into the sea, the user will be very distressed ...

Moreover, if the Beihai country uses lizard cannons, it can be made even simpler-casting shells with cement!

The 50-pound stone ball may be difficult to process and transport, but if it is a cement ball, it is much simpler ...

Whoever you ask for is definitely too loose and easily broken. Therefore, before casting a 50-pound cement ball, it is possible to fill some reinforcing bars inside the cement ball. Not only can it increase the strength of the cement ball, but it is even more powerful when you hit the ship ...

Therefore, while Marin ordered the introduction of 20 7000-pound lizard cannons, he also ordered craftsmen to study the pouring of 50-pound concrete shells with reinforced concrete for use in naval battles.

As for iron ball shells and the like, Beihai is not unaffordable. But if you suddenly change the shells, the artillery itself needs to be modified. Marin has no time to transform the lizard cannon. He can only use the reinforced concrete with similar density as the stone to make the shell. As for the heavy artillery using iron ball shells, this may require professional improvement ...