A few days after Hu Zhennan, the general manager of New Oriental Security Company, returned to Bahrain, the naval squad leader of the Hormuz Naval Base fulfilled his promise and officially sent a flying scissor three-masted naval patrol ship to Bahrain Island!

The patrol ship, known as the Sea Eagle 5, was warmly welcomed by the merchants of the Bahrain and the Great Song Dynasty.

In fact, all the yellow-skinned merchants went to the docks to watch its arrival, and they all had straight waists, haha, that's our warship for the navy!

The speed of this patrol ship was amazing, but it did not frighten the merchants, because they had almost all seen the previous flying scissor communication ship, which seemed to be faster, but everyone knew that it was a "dustpan" ship------ and if you didn't have the physical strength to ride it, it would kill people!

The birth of this patrol ship marked the progress of the Liuqiu shipyard in hydrodynamics.

They started by making the freeboard on the patrol ship smaller, while minimizing the deck superstructure and transforming the windward side of the building into a slope.

It has a length-to-width ratio of 7:1, 35 meters to 5 meters, and a depth of 4 meters.

Although the bow is still hollow, the waterline of the bow has been enlarged, so that the bow post has become longer and sharper, almost like a sword!

After repeated tests, the underwater shape of the patrol ship has maintained its original design and is still V-shaped.

Tests have proven that this shape is indeed the least drag body in the water!

However, at the same time, the Liuqiu shipyard has increased the lateral drag profile to reduce the violent turbulence when sailing at the expense of some speed.

It's a compromise between speed and comfort------ and it's been tested in the lab over and over again, leaving behind a lot of data.

In this way, the overall waterline of the patrol ship is particularly beautiful------ gradually transitioning from a longer and sharper bow to a hull with a certain inclination, and then gradually transitioning to a narrow round stern, and the whole is harmoniously mixed into a perfect whole!

In fact, one more wooden boat or one less, Zhang Daoist really didn't care------ but when he saw Captain Zhang Laoshi leading some craftsmen to test in the flowing water pool at the Liuqiu Shipyard, and saw that they had written down several large volumes of data, which were accurate and clear data!

Zhang Island Master was full of excitement at that time, if they were still allowed to play freely, God knows what level they would reach in the end!

Broadly speaking, the level of development of shipbuilding represents the level of human understanding and exploration of nature, even if it is only a wooden ship!!

Zhang then quietly withdrew from the factory, and he saw with his own eyes that his craftsmen were moving from the state of "knowing what it is, not knowing why it is" to the direction of "knowing why it is so", which is simply very happy and exciting------

After improving the stability of the hull of the flying scissor patrol ship, the Liuqiu shipyard began to give full play to the role of the sail.

The longer and sharper bow of the patrol ship greatly extended the length of the hull, and they added a bow slash along the bow post, so that more stud jibs could be hung, thus increasing the capacity of the sail and increasing its sailing power.

The stern of this patrol ship was narrower, so that its foremast was farther away from the stern, so they added a slightly shorter stern slash and hung a ram jib to give them more navigational power.

At the same time, its mast is taller than ever before, bringing it to three-quarters of the length of the hull!

In this way, you can hang the moon sail and the support sail on the top mast sail------ according to the actual needs, you can also add the overhanging sail boom on both sides of the hull, they call it the wing sail, you can also hang the wing sail, naturally greatly increase the lateral extension area of the sail.

Originally, it was no more than a three-masted sailing ship, with a design displacement of only six hundred tons, but it almost reached the sail area of a five-masted merchant ship!

When sailing, its hollow bow makes it easy to lift the boat in waves, and its inclination improves its course stability in waves.

From a distance, the patrol ship appears to be gliding against the sea, like an elegant swan gliding over the lake.

It has a cruising speed of fifteen knots per hour, and with full sail, it can easily reach twenty-five knots!

In the sea trial, it took only one and a half days to travel from Badaohe to Qingdao Port in Shandong Province, and to Beth City in Australia in only 15 days.

Including the captain and sailors, the patrol ship only needs 25 people to maneuver and can carry 100 heavily armed marines.

At the same time, it can also act as a transport ship for ammunition, medicines or other valuables.

Balsa veneer is used extensively throughout the ship, which increases its safety.

The sloped structure on the deck of the patrol ship is equipped with celluloid windshields, while the rudder lever transmission operation method is adopted, which greatly improves the working conditions of the helmsman.

In dangerous situations, it can also be changed to be directly at the helm at the stern.

It has a maximum sailing time of 40 days and can reach 10,000 nautical miles------ which means that it can continue to sail for 40 days without the need for resupply when there are no other passengers on board.

The birth of this type of ship may be the product of a combination of factors.

In addition to the efforts of the craftsmen of the Liuqiu Shipyard, the tall hardwoods from the primeval forests of the middle and upper reaches of the Yalu River, as well as the technical equipment of the large-scale woodworking machine tools of the Liuqiu Shipyard, far beyond the sail processing capacity and rope processing capacity of this era, must be developed, and perhaps under the influence of the flying scissor transportation communication ship that someone forced to manufacture before, it will give birth to it.

When this ship type was finalized and officially began processing and production, Zhang Laoshi, the factory director, proudly accompanied Wang Defa's family and Zhang Dao's master to inspect the factory.

Where else in the world can you build three such patrol ships at the same time!

Wang Defa's family said to Zhang Island: "It is still the best cost-effective 3,000-ton clipper------

Zhang Island Master looked at the busy craftsmen and technicians on the three dry ship platforms, sighed, and said:

"Yes, we are increasingly needing nitrate and copper in South America, as well as gold and silver in North America, and if there is no big injection of foreign resources, I am worried that there will be inflation!"

"Don't worry------ there will be a while, as long as we keep the fundamentals of agriculture, we don't have to worry too much------"

Zhang Laoshi Factory Director South America is located, he doesn't know where North America is, and he doesn't know what inflation is------ but he understands what he thinks he understands best.

What the! To such a ship of 3,000 tons?!

My god, that's not something that can be expanded fivefold just by chance!

Director Zhang Laoshi swallowed his saliva and asked, "A three-thousand-ton flying clipping ship, how high is that mast?" ”

"At least 60 meters------"

"Sixty meters! Twenty zhang!! ”

Director Zhang Laoshi looked at the air------ how can there be such a tall hardwood in the world!"

He couldn't be proud, and there was still a long, long road ahead------

Merchants on the island of Bahrain lined up in two lines to welcome the arrival of the Liuqiu navy.

The first time the patrol officially began, the captain of the navy squad came in person, they quickly docked the patrol ship, and then solemnly boarded the dock.

The boots of the Flowing Navy set foot on the island for the first time, and may have been echoing in the Persian Gulf ever since.

PS: Thank you Wang Xuanbin, you can't survive if you don't pit, Sanqi Yanya, jied1029, and book friends 210 for your tips.