Although the ships and crews used by Captain Baca for combat were wiped out by the Spanish Caribbean fleet. But the small industrial base of his hiding place is still there, and now after alliing with Zhang Fan's team, Caterina and Captain Hook's pirate group, it should recover quickly. What's more, now that the alliance is well funded, the commercial activities of Jihua are also in full swing under the Jihua of the Book Demon and Captain Stoker.

In order to disguise the large carrak galleons, the dockyard where Captain Baka was hiding was working at full speed to remodel the six galleons. All the elaborate decorations on the ship related to Spain, as well as the stern tower, which was useless for navigation and transport loading, were repainted, and the bow of the ship was replaced. These large captured Spanish galleons will be refreshed and set sail again in the next month or two.

The most important thing for Akon was to immediately dismantle the Sunset's two auger propulsion systems, although the two complete sets of dark green prop propulsion systems were still very primitive, but they were immediately urgently fused by the paddle galleys of the 'Holy Fox'. The two paddle paddles disappeared in an instant, replaced by two emerald green propeller props hidden underwater!

At this time, the 'Holy Fox' also changed greatly, the four masts became three, and the front mast fell down into a truncated short bow mast, as if the bow of the ship had grown a mighty horn like a fox. Between the foremast and the mast, there is a jib hanging diagonally on both sides, and a longitudinal jigsaw sail is also hung on the backmast.

Interestingly, these sails, including the jib in the bow, have been reverted to the Chinese canopy style. The mainsails of the mainmast and foremast became one-piece trapezoidal canopy sails wide at the top and narrow at the bottom, with a large windward side, like a dorsal fin plucked from the back of a dragon. The jib on the foremast and the longitudinal jiggers on the backmast are like open arc-shaped fins, protruding obliquely from the sail surface with bone spurs. It is like an open Chinese folding fan, which looks simple and public.

Such sails are hung on masts, reinforced by horizontal bamboo poles, which are not only strong and strong, but also use fewer cables, unlike the dense rope pulley system of spider webs on European galleons. It is also easy to retract the sails, as long as you loosen the cable with the winch, it is like closing a folding fan, and the sails can be easily retracted.

The hull of the 'Holy Monkey' has also undergone some changes, resulting in a smooth and streamlined structure. The widest position is at the rear of the center, forming a long teardrop shape with the sharp and narrow bow. Such a streamlined hull shape is very different from that of European ships, and is more characteristic of ancient Chinese ships. In terms of ship design, although China and Europe have used the principle of bionics to design the hull as streamlined, the object of imitation is different. Europeans imitate fish, while the Chinese imitate waterfowl.

In this way, the widest part of the European hull was in front of the middle, and the widest part of the Chinese hull was behind the middle. Later studies of fluid mechanics proved that the Chinese approach was more scientific, because ordinary ships were not submarines, and did not swim under water like fish, but rowed between water and air like water birds, such as ducks and geese. After realizing this, Western ships in the later period, like Chinese ships, placed the widest part in the middle and the back.

After the replacement of the propeller propulsion system, although it is still a manual transmission, the speed and loading of the 'Holy Fox' have been greatly improved, and the weight of the hull has been reduced a lot. This also gave Captain Baka hope for his new flagship. Moreover, Akon also promised to help him build a fleet of ten new ironclad ships of no less than 300 tons in ten years! Of course, he must also owe allegiance to Baron Shifan for ten years, and Baron Shifan owns half of the shares and command of the fleet.

Captain Stoker's job is a little more difficult, he originally only planned to lead the voyage for Zhang Fan's team, and after finding Hawkins and Drake's fleet, he left everyone and went back to Africa to live in seclusion. However, after some persuasion from Zhang Fan and the Book Demon, and the fact that the 'Caribbean Alliance' seemed to ignite his ambition to travel the Atlantic, Stoke decided to join the Baron's fleet. But he was only willing to engage in some commercial and non-plundering naval warfare. Perhaps he no longer wants to have the blood of innocents on his hands. This is exactly what Zhang Fan is looking for, a loyal, upright, and trustworthy leader of a commercial fleet.

Zhang Fan's team handed over to him six Karak galleons and several escort three-masted galleons, as well as the management of the bay of St. Nicholas. When it comes to business, he and Captain Baka are both good hands. And now that the whole Caribbean knows that Captain Baca's pirate regiment was defeated by the Spanish fleet, he took the opportunity to switch to commercial transportation, and no one will doubt it.

The bookdemon provided Akon and Captain Baka with very useful information on the propeller transmission mechanism, which contained detailed drawings of the propeller's water-lubricated bearings made of ironwood at the hull joints. The wood of iron power wood is very hard, corrosion resistant, and in the presence of water, it can produce a kind of slime, which greatly reduces the friction coefficient of the friction surface and realizes the effect of self-lubrication, so iron pear wood is very useful in shipbuilding.

The stern tube part of the ship is connected to different environments inside and outside the ship, and the iron wood is suitable for installation in the part in contact with seawater, which reduces the requirements for the watertightness of the shaft seal on the seawater side while supporting the stern shaft well. You must know that even modern ships still use sealed bearings made of ironwood. Such trees are ubiquitous on the mountain-high and densely forested island of Haiti.

Tieli wood bearing is not made of a complete material, but is composed of the upper and lower bearings of Tieli wood strips, and several copper strips with relatively thin thickness will be installed between the wooden strips, which are fixed by the clamping pressure of the copper strips to prevent the iron pear wood strips from moving. The texture of the upper bearing is parallel to the tail shaft. The texture of the lower pad is perpendicular to the tail shaft and points towards the center of the shaft.

The requirements of such a manufacturing process are not very high, but this era did not invent this kind of sealed bearing, once you know the key to this jishu, with the process of this era jishu, it can be done. The book demon and Aken's are just promoting this late civilization jishu in advance. It's as if the book demon taught the ancient Chinese iron smelting and paper making, and the difficulty is even lower than teaching iron smelting and paper making.

With this kind of sealed bearing, it fundamentally solves the problem of water seepage at the hull connection and underwater sealing, the vibration of the hull due to the rotation of the propeller, the problem of affecting the firmness of the hull, and the problem of bearing wear after the use of propeller propeller propeller in the hull. The solution of this series of problems has enabled the underwater propeller recommendation system to be widely used on all vessels.