For the next period of time, Zhao Xin almost stayed in the shipyard, perhaps, Zhao Xin did not understand shipbuilding, but now, for the entire shipyard, the process of shipbuilding has been basically completed, and the main problem is how to integrate those unique projects together, which is the real key.

Whether it is soft sails, spinnakers, and different arrangements, these are different from traditional Chinese sailboats, and it is these differences that bother them and make them unable to go further.

Such a problem is not a problem for Zhao Xin at all, he has seen the model of a real Spanish sailing ship and a Galen ship, and even has a certain understanding of them, this understanding, for him who is not familiar with shipbuilding, can not support him to start construction and preside over the construction of a large Galen ship, but it is no problem to separate different subsystems and integrate the subsystems.

Sure enough, in the next 10 days, the other ships that were still far away were also completed one by one, except for the largest 1500-material ship, the rest were completed one by one.

Three or four ships are the sub-projects with the smallest changes, and even if there are some of these changes in the experiment, the changes are not very large, and some subtle experimental data cannot make other shipwrights feel something.

However, there are more and more sub-projects, especially a three-mast boat, two of which are equipped with soft sails, especially the largest spinnaker on the upper deck, which is also the most complete.

During the test, the hard sail was lowered, similar to a 2-masted ship, perhaps, what is the arrangement of the soft sail, there are still some problems, in the Spanish sailing ship, the position of each mast, on each mast, the scale of various soft sails, are fixed length, which is the most suitable under years of research.

Now, it's still a long way to go, but with the soft sails on the downwind, this boat is very powerful.

These boatwrights may not understand the relationship between power and efficiency, such as the resistance on the water, but the effect is very easy to see.

These boatwrights may not be excellent captains, but their understanding of the whole ship is very deep, and they are of course very familiar with the performance of traditional sailing boats.

Especially during the test, once, when the wind is strong to a certain extent, according to traditional experience, at this time, the hard sail should be lowered, and then with the increase of the wind, the sail will be gradually lowered, and finally reduced to the lowest level.

However, under the premise of using soft sails, when the wind gradually increases, these soft sails are all full of wind, and when the wind is getting stronger and stronger, these soft sails are full of power one by one, and then the ship begins to move forward, the speed is significantly faster, and it is relatively stable.

Since there is no excessive effort, then there is no need to lower, soft sail is probably only part of the reason, the bottom of the ocean-going ship, the more narrow and sharp hull, in high-speed sailing, will have enough stability, deeper draft, in the face of stronger winds, it is not easy to roll over, this is the advantage of ocean-going ships.

On the sea, the power of the wind is much greater than that of rivers and lakes, and when the strong wind pushes the boats on the sea, like galloping horses, everyone is stunned.

The tailwind can reach a maximum of more than 10 knots, that is, 36 li in Songli, such a speed, almost more than 5 times the original, which is simply a miracle.

Even before, the most stubborn had to admit the benefits of soft sails, not to mention the spinnaker, a kind of sailing that can be used in a zigzag shape under the premise of headwind, can still gain kinetic energy and move forward, which is beyond everyone's expectations.

In the perception of ordinary boatsmiths, if you sail with the wind, you will either use a boatwright or simply anchor, in case you are blown by the wind, if you do not advance but retreat, it will be a big trouble.

Perhaps, in the headwind, it is not as big as the downwind, but the speed of three or four knots is at least equivalent to the average speed of the original ship.

All the experimental vessels have completed the first round of experiments, in fact, the whole test is still ongoing, this is carried out, mainly long-term, scientific experience, from the middle, to find out the method of sail arrangement, for the next step of construction, to lay the foundation.

20 ships, hundreds of different test items, these items, and then combined, constitute the emergence of a truly experimental ship in the Dinghai Navy.

After the previous construction, especially the completion of the largest, 1,500-material experimental sea boat, the shipwrights of the Dinghai Navy summed up a lot of experience, and they went through careful research and design, and under the promotion of Zhao Xin, started the construction of a larger-scale ship.

From the previous 20 experimental ships, to now, it has been reduced to 4, and most of the shipwrights and workers have invested in this, and this ship is also a bit huge, 8600 materials, which cannot be regarded as the largest ship in the entire Northern Song Dynasty, and it is also among the largest ships, ranking among the top ships.

In fact, such a ship also has a special meaning for Zhao Xin, this is an entry-level sea vessel.

Close to 9,000 materials, in fact, is already close to 300 tons, for large ships, entry-level, that is, two or three hundred tons.

Of course, this large-scale refers to the large size at the beginning of the Age of Sail, and in the 21st century, even 100,000-ton ships have emerged in an endless stream, two or three hundred tons, I'm afraid it's just a mosquito ship, but in the era of wooden sail warships, the proportion of wood is very small, compared to steel warships, it is much larger, and two or three hundred tons is not small.

Because the results of the experimental ship were too amazing, basically, the sub-projects proposed by Zhao Xin were all recognized by these shipwrights, and then after the collective wisdom of everyone, several new ships were finally obtained.

The hull also joined their understanding, that is, it is more narrow and long, and the multi-layer deck has also been added to it, but it is only one of the three ships, under the premise that the artillery has not been successfully developed, the multi-layer deck, in fact, the effect is not strong, and even different layers, there will be some cumbersome.

However, many others have been added, for example, higher forward and aft masts, multi-layer sails, almost as far as possible, the whole ship is full of sails, and the soft sails are also within the permissible range, increased to the maximum extent, once the wind fills the whole soft sails, the whole boat, will gain the maximum kinetic energy, and in the future, will gain greater speed.

The shipwrights fell into an inexplicable surprise, they never knew that the design of the ship was not a type they understood, but a change in the soft sail, a change in the spinnaker, as well as a variety of rigging, as well as the unique arrangement of the ship, so that the efficiency of the ship increased a lot, especially not considering the load, but taking into account the combat effectiveness.

There were few ships in the Northern Song Dynasty that specialized in combat, and the traditional combat ships were mostly small boats, which were easy to turn around on the river, and to a certain extent, they were more suitable for combat than large ships.

But on the sea, there are completely two situations, the sea surface without wind and three feet of waves, the small boat is more affected, and it is not suitable for warship, but the big ship, how to use it as a warship, is it possible, is it equipped with some weapons and increased personnel?

For the time being, artillery has not yet been developed, it is not that there is no technology, in fact, the most important thing in artillery is gunpowder, once the gunpowder is completed, there is no difficulty in making artillery.

The iron cannon may have very high requirements for the barrel, and I don't know if there is a suitable one for the steel formula of the navy, but there is no problem with the copper cannon.

Compared with iron, copper is simpler, as early as thousands of years ago, many ancient civilizations in the world, have been able to smelt copper, a bronze cannon, in that era, can be forged, now it is nothing more than adding some science and technology, how to design different aspects of artillery, this, gradually groping can also be.

The reason why Zhao Xin did not open it is that the technology mastered by the Dinghai Navy is already strong enough, the fortress, steel, and other things, the movement of the artillery is too big, in the Dinghai Navy, it is difficult to even conduct an experiment, and the general artillery can easily hit four or five miles, that is to say, in order to experiment with such a cannon, the radius of the safe area is at least 7 kilometers or more.

The radius of the navy is only about 30 kilometers, and on the premise of building a large number of factories and residences, how much land can accommodate such an experiment.

It is not appropriate to go to the mainland and find a wasteland to experiment, the movement of the artillery is too big, it is easy to attract attention, and if it is really covered up, there will be a lot of problems.

Anyway, now the combat effectiveness of the Northern Song Dynasty is amazing enough, there is no need to come up with such a big killing weapon again, artillery, even the simplest and smallest artillery, their combat effectiveness is quite amazing.

However, a similar arrangement is already possible, among the land warfare weapons, there is a weapon that is very amazing, that is, the heavy bed crossbow, in the Northern Song Dynasty, there are many heavy bed crossbows, the most well-known, is the three-ox and five-ox crossbows, such crossbows are very terrifying, simple crossbow arrows, the largest, even have the thickness of an arm, close to a zhang in length, on the battlefield, in the face of the cavalry neat charge camp, they can also sweep a piece.

Such crossbow arrows, propelled by powerful bed crossbows, could even be carried out by three or four heavy cavalry in a row.

However, such a weapon is quite difficult to use, 3 Ox and 9 Ox, as soon as you hear it, you know that the strength of this crossbow is very large, and even such a weapon, their own weight is quite high.

But when used on the ship, it is not a problem, Zhao Xin reserved the muzzle of the gun on the experimental ship on the third deck, which can be used in the future for the installation of artillery and the transformation of bed crossbows.

According to a ship of about 9,000 materials, 3 decks, and 24 gun ports, a total of 24 bed crossbows can be accommodated.

The setting of eccentric wheel and ratchet wheel, this Zhao Xin knows that the entire Dinghai Navy does not have such mechanical processing capabilities, but it is still possible to find skilled craftsmen and carve them little by little.

Such a labor-saving device, on top of the ordinary crossbow, can still play a role, on the bed crossbow, the same can be, superimposed multi-layer crossbows, with the help of the labor-saving device, fixed on the unique crossbow car, as long as two or three people can operate.

Such a ballista is definitely inferior to artillery, and the mechanical power is higher than the chemical energy, of course, the chemical energy is higher, this is not a thing on the same level, unless the materials and power reach a terrible situation.

But such a weapon is also terrifying enough, with the elastic power of the bed crossbow, especially 12 beds, or even 24 beds, their concentrated power is very amazing.

Such a bed crossbow, with a unique, special steel crossbow arrow, shot out through 24 bed crossbows, not to mention ordinary wooden boats can't be stopped, even if it's a city wall, even if it's a fortress, more than one meter of reinforced concrete, within the range of a time, can shoot more than half, not to mention a special burst arrow.

This burst arrow is like a grenade in later generations, there is no steel ball or prefabricated fragments to increase the damage, it is simply itself, the arm is thick, one zhang long, made of cast iron, filled with explosives, through the detonating device, the bottom explosion, or the time lead, exploded at a certain time in flight.

No matter which one it is, it is very terrifying, this thing, compared to the original artillery, is not bad at all, 24 bed crossbows, can easily shoot a few kilograms of things, three or four miles, just this point, this range, is already stronger than most of the primary artillery, and now, the Ding Navy, although there is no in-depth study of explosives and the like, but it has nitric acid, glycerin, and some other chemicals, whether it is nitrocellulose, or nitroglycerin, it is not a problem.

Under such a strong explosive, the power of a few kilograms is already extremely terrifying, as long as the opponent is not an armored ship, an ordinary wooden ship, it is impossible to block such a terrible weapon, and if you can find rubber, rubber mixed with some metal powder and explosives, the incendiary weapon made is even more terrifying, that even the terrible flame that water can not break, in this era, once the wooden ship is stained, it is dead.

Sometimes, a simple thing is enough to change the balance of the battlefield, and the emergence of this weapon makes the ballista such a thing that should be backward bloom with a different brilliance.

These shipwrights, under the guidance of Zhao Xin, when they designed this ship, they didn't realize that they would design a terrible warship, this as the first generation of warships of the Ding Navy, after two or three years, the first appearance of the battle line, made the Ding Navy Navy, powerful in all directions, and became one of the pillars of the beginning of the Emperor Song Dynasty.