Originally, he was going to hide it from Zhang Fan's book demon, but after the book demon took a closer look at this ship, he immediately knew that this ship must have used a propeller thruster more advanced than the paddle wheel propeller. But the question is, how did the propeller thruster appear in this era when it was invented by the British scientist Hooke 120 years later?

After learning about Baka's origins, the puzzle is solved. It turned out that this guy was a descendant of the ancient Phoenicians, claiming to be a descendant of the famous Carthaginian general Hannibal. That's why his pirate regiment was called 'Carthaginian Sunset'. Whereas the propeller was inspired by the auger pump that Archimedes invented when he was in Egypt.

And in the beginning, the propeller thruster was an enlarged version of the propeller. This type of screw pump is still widely used in Egypt today and is called a screw conveyor in modern industrial applications. Carthage and ancient Egypt belong to the same North Africa, and this kind of screw pump Baka has been seen since childhood. Baka also accidentally discovered from a half-damaged auger pump that the half-cut auger was able to propel a small wooden boat through the water. So he followed this path of study, and after more than ten years of shiyan, she finally developed the propeller thruster, that is, the early propeller thruster.

Hence the 'Sunset' propeller ironclad ship! However, there was no steam engine in this era, and this primitive propeller thruster could only be turned by man. Even so, this power is stronger than the paddle paddle after solving a series of problems such as hull sealing under the waterline, hull vibration during rotation, bearing wear!

This ironclad ship book demon is determined to win, because propellers can be made, and ships that use propellers can also be made, but if the 'Holy Monkey' wants to advance, it must be fused with the propeller props on this ironclad ship. However, Captain Baca was still mysteriously unwilling to reveal his invention patent.

The bookdemon shook his head with a smile, drew a spiral on the ground with a twig, and said to Baka, "I know everything about you, and more. We can also help you improve this ship, your ironclad must be leaking a lot. Moreover, the thruster-hull connection is prone to wear and tear and is difficult to repair. All of this, we can help you improve ......"

"But we need your ship, make a price......" The bookdemon threw away the branch and looked at Captain Baca fixedly, his words made Baca panic for a while, and the muscles on his face throbbed, betraying the fear in his heart.

"How do you know?" Baka looked at the book demon gloomily, "On this shijie, it is impossible for anyone to know about this discovery. If anyone had discovered this secret, it would have been full of ships like Shijie a long time ago. ”

The book demon said lightly: "Although this kind of propulsion is advanced, it requires a lot of manpower, which is similar to that of a rowing boat, and is not suitable for ocean sailing. Only sail-powered vessels can get continuous propulsion on long-distance voyages. And this kind of propulsion, in the far east, has already been used, but in a different form. ”

Baca originally wanted to kill people in order to keep this secret, but was discouraged by the words of the book demon. Indeed, it takes a lot of manpower to turn the machinery to make the screw rotate and move the boat forward, which is different from a rowing boat, which is always unsuitable for long voyages. If Columbus had used such a ship, it would not have been possible to cross the Atlantic to discover the New World.

How did he know that propeller thrusters work entirely in the water, and the power efficiency of most of the paddle boats and paddle boats on the water is much better. It also reduces most of the inefficient weight compared to bulky paddle paddle paddles, and even if it uses the same manpower, it is also less efficient than paddle and paddle paddle It's just that his screw is still only in the initial stage of the propeller, and the efficiency is still very low. If you can use a modern form of propeller and combine it with a sail, you can naturally make a propeller boat sail far!

Captain Baka sighed, "Well, now that you've cracked this jishu, for the sake of saving my life, after returning to my hiding place, this ship will be given to you." I just hope that you will keep this secret in the Caribbean and the Mediterranean. If the Spaniards had known about this advance jishu, it would have been more difficult for us to deal with them. ”

The bookdemon nodded, "Of course, we are also enemies of the Spanish fleet, and we will never let them obtain such a jishu." I hope that in the future we can work together well and make the Spaniards pay a heavy price. ”

Captain Baka looked at his few dozen remaining people, smiled wryly and shook his head, "I'm finished. Do you know how many years of hard work I have accumulated so many warships? Eight years! In less than a day, it was gone! There is still an ironclad ship in my hiding place that is only half completed, and even with this ironclad ship, it is impossible for me to return to my original strength. ”

The bookdemon thought for a moment and said to Captain Baka, "You are an excellent shipbuilder and mechanic, and you unexpectedly came to the Caribbean to become a pirate. And it's done so well. We have a friend who is also a very good mechanic, and he may have a common language with you. There are still many improvements to this ironclad ship of yours, and he will definitely be able to give a good suggestion. If I had the chance, I would have introduced him to you, and maybe you wouldn't have been so depressed. "The book demon instinctively felt that this pirate leader was in love with Akon.

Baka smiled, "Perhaps, my biggest dream is to build the best ocean-going warship on Shijie." In the name of my ancestor Hannibal of Carthage, defeating the fleets of the Holy Roman Empire and Spain is like the invincible Redbeard in the Mediterranean thirty years ago. Being a pirate allowed me to earn money to develop such ironclad ships, and to teach the Spanish fleet a lesson like my ancestor Hannibal of Carthage, so I did it. ”

Zhang Fan listened to Captain Bacca's words and sighed in his heart that each of these best pirates in the Caribbean has its own ideals. But they basically all had the same goal, which was to strike the Spanish fleet. It seems that in the process of expanding the colonies in the New World, Spain has robbed many people's interests and dreams!

After three days of rest in this bay, Captain Baka's ironclad ship regained some durability. So he took Zhang Fan's book demon and went around Haiti Island in a big circle, and it took a week to drive to his hiding place on the north shore of Haiti Island. It was a very secluded bay, ten kilometres west of modern Cap Haïtien and less than thirty kilometres from the notorious pirate island of Tortuga, a quiet sea rarely passed by ships. With its beautiful scenery and secluded bays, it's a great hiding place.

The bay is gourd-shaped, two kilometers wide and six kilometers deep, with a small mouth and two headlands guarding the 600-meter-wide waterway. Six kilometres away from the bay, there is an indigenous village called Rambe, which provides daily supplies for Baka's hideout. This paradise-like hiding place made the book demon and Xuanyuan Star very envious.

"Victor the Coward seems to have a map of the Abandoned Harbor hideout in his hand, although it is not as good as mine, but I heard that the location is good. The next time I have a chance to meet this guy, I'll help you guys come over. If he were still alive. Baca was a little proud, and said with a big grin, "But then again, in this naval battle, Victor's kid seems to have behaved very bravely, and even the flagship rushed up and was blown up!" I don't know if he succeeded in breaking through. But that kid is very slippery, I guess he won't die......"

Zhang Fan was not interested in any of this, seeing that he had already established a good relationship with Captain Bacca, the second of the five major pirate groups in the Caribbean, and had obtained a dilapidated new propeller ironclad ship, which had exceeded the tasks assigned by Akon, so he was about to leave. He was worried about Greenwing Aken's safety.

The ironclad ship could not be driven away for the time being, and could only be temporarily stored with Captain Baka. Zhang Fan and the three of them said goodbye to Captain Baca, took the undead bone dragon, and went to Port-au-Prince. There is a detailed map in the bookdemon material, and Port-au-Prince is directly south of Captain Baca's hideout. The bone dragon flew south for half a day and landed in the wild in Port-au-Prince.

Zhang Fan rushed into the port, but did not contact Akon and them, and he was a little anxious. Found the tavern, found the code left by Caterina and Acan, found a Caterina henchman pirate eyeliner waiting here, received a fire paint seal from his hand, a secret letter written in Chinese, and learned that Akon and Caterina had successfully robbed the Spanish transport fleet, and also hijacked two Spanish treasure ships transporting gold, which can be described as a full load!

However, the six Carrac galleons were not allowed to enter Port-au-Prince, and had to be converted into a pirate hideout before they could be sold. Otherwise, the only way to dispose of the stolen goods is to the British mainland. But such a harvest is not safe even in the pirate hiding port, because it will inevitably make those pirate groups jealous, make a big fuss, and attract unnecessary trouble. The Caribbean Pact on Plunder, while valid, has few rules to speak of if even its framers are red-eyed.

However, in order to take revenge, Captain Hook intercepted and attacked Victor on the way, who was fleeing for his life, and obtained half of the charts of the abandoned harbor hiding place from him......

…………

After Akon explained to Zhang Fan, he urged the goblin who controlled the wooden kite to fly towards the Spanish transport fleet immediately. In the air, let the female pirate intercept the four Spanish transports that were out of the battlefield. He landed on the surface, summoned the St. Furriot, and followed the Spanish convoy in pursuit......

The result was no surprise, there were two Catalina's warships intercepted in front, the 'Holy Monkey' blocking the way behind, and two escort warships that were in battle against the water to disrupt the situation, and the four Spanish transport ships that had long lost their combat effectiveness could not be beaten and could not run, so they had to be captured obediently!