The Rise of the European Emperor

What speed is 7 knots? That's 7 knots per hour. And each nautical mile is 1.852 kilometers, that is to say, the speed of 7 knots is 12.96 kilometers per hour...

What the hell, even a bicycle can reach a speed of 20 kilometers per hour on the road, how fast is this?

However, only Marin, who has seen the world, thinks so. In the eyes of others, 7 knots is indeed very remarkable. At least, among riverboats, this speed is considered very fast. You know, in this era, because of the strong sea wind, a ship at sea can only run at a speed of 10 knots at most with smooth sailing. Only a long and narrow speedboat can run at a high speed of 12 knots.

But that was at sea, and the wind was strong. And inland, the wind isn't even as strong as in the Mediterranean. Therefore, river boats are generally very slow. Even if a galley is used, due to limited human strength, the heavy oars cannot be rowed, and the boat can only be rowed at a speed of five or six knots. It's not that you can't draw 7 knots, but that's usually an empty boat, and the oarsmen row like hell. However, paddling like this cannot last, after all, people cannot do this at high speed for a long time. Therefore, under normal circumstances, it is difficult for a galley to reach a speed of 7 knots.

On the other hand, the Calais boat, under the blessing of the wind and sail power, and the oarsmen paddling together, can reach a speed of 7 knots. But under normal circumstances, paddlers also need to conserve their strength and not burst out frequently. Such speed can only be achieved during escape or pursuit in naval battles.

Therefore, in the face of the "speedboat" that can stably sail at a speed of 7 knots, others are amazed and feel that it is simply a miracle sent by God.

"Is this a miracle? I really don't know much..." Marin rolled his eyes and decided to make a big move.

So he called Da Vinci and ordered:

"How many sets of this diesel engine and propeller system do you have?"

Da Vinci replied:

"The 10 sets are all qualified diesel engines selected by me and my students after improvement."

In fact, the craftsmen of Beihai State produced more than one hundred 12-horsepower single-cylinder diesel engines in total. However, due to the manufacturing process and various improper operations, in the end, Leonardo da Vinci and his mechanical college students only selected 10 qualified products. As for the propeller system, that is nothing. There are more than 20 sets of transmission rods and propeller blades made of nickel steel, and 12 sets are qualified, which is almost half of the pass rate.

"10 sets, right... Hehe, Ada, let me teach you a fun way to make the boat go faster!"

Da Vinci was confused, and Marin suddenly asked again:

"Ada, do you know 'Da Fei'?"

"Da Fei? Who is it?" Da Vinci was confused.

"Well, it seems that he is not a time traveler, and he doesn't even know about 'Da Fei'..."

So, what is "Big Fly"? In fact, it is a speedboat for smuggling. The speed of a normal speedboat is only 30 to 40 kilometers per hour. However, as the "Da Fei" of smuggling speedboats, in order to escape the interception of anti-smuggling boats, he often refits the speedboats to make the speed of the speedboats very high.

The method of modification is also very simple - install six or even seven 250-horsepower marine hangers side by side at the tail of the speedboat. In this way, the six marine hangers work together to push the speed of the speedboat to a very high level.

Generally speaking, a "Dafei" loaded with a car or more than 300 boxes of cigarettes can run at a speed of more than 90 kilometers per hour.

Because of the resistance of the water when sailing at high speed, the speedboat often breaks through the obstacles of the water and "flies" on the water, so it is also called "Dafei".

The speed of Dafei is too fast, with a speed of more than 90 kilometers per hour, it can also go to high speed on land. The speed of anti-smuggling ships at sea is generally about 60 kilometers, and the maximum speed is 80 kilometers per hour. If you encounter this kind of unreasonableness, you will quickly "fly", and there is really nothing you can do.

However, later Huaxia became rich, and the customs department had sufficient funds allocated from above, so they directly replaced the shotgun with the gun, and equipped it with a helicopter... Nima, no matter how fast you "fly", can you pass the plane faster? Then, "Da Fei" was restrained by "True Flying (Plane)"...

Of course, in this era, everyone has not seen the power of "Da Fei". Marin smiled mysteriously, and began to guide Da Vinci and his mechanical students to modify the hull. There are four 12-horsepower single-cylinder diesel engines directly attached to the stern of a small boat of more than ten tons... This is because the boat is too small, and the diesel engine needs to be started with a crank, so there must be space. Otherwise, Marin plans to install 6 at a time...

After the four diesel engines were installed, Marin ordered the four mechanical students to shake the handles together to start the diesel engines. Then, put in gear...Of course, there is only one gear, and the other is neutral...

After putting into gear together, the speedboat rushed out like an off-string arrow. The rope knots and empty barrels used to measure the speed were also quickly dragged away...

Da Vinci and a group of mechanical students went straight to Sparta...

"What's the speed?" After a while, seeing that the rope and the empty barrel had been pulled away, he began to ask for the records.

"Probably... up to 18 knots?"

"How much?" Da Vinci thought he had misheard, grabbed the record book, and looked at it——no problem, verse 18...

At this time, Marin realized something was wrong, and ordered——

"Hurry up, catch up on horseback, and use the horn to order the boat to stop!"

This small river for the mechanical department to test the speed of the ship is only a dozen kilometers long, but it can't support the "running" of the ship...

As a result, it was still a step too late, and the "speedboat" rushed to the beach at the end of the river at a high speed of 18 knots. The four mechanical students who were in charge of sailing the boat were all injured, but luckily none of them were serious. But the hull of the wooden boat was directly damaged, and even two diesel engines were damaged...

After Da Vinci comforted the injured students and sent them to the hospital, he danced excitedly:

"If all the ships are equipped with this kind of power, who can catch up with the ships from the North Sea?"

Marin poured cold water on him:

"Stop dreaming, Ada, diesel is not enough..."

Indeed, the North Sea country now only imports oil from the Galicia Valley in Poland, and will soon get oil from the sulfur pit on Taiwan Island, and can also import oil from Persia...

Even so, however, oil production is low...

The oil production in the Galician Valley is very low, only one or two barrels per day, which is the output after Marin invested heavily. The scope of Chusulphurous Pit has been determined, but well exploration is still in progress. Moreover, it is necessary to wait until Zhuo Tsutsui is opened before mass production can begin.

On the Persian side, according to the information sent back, the Baku area there can indeed produce hundreds of ships of oil every year, but what Marin can buy is only a few dozen ships. Because, the Middle East also needs oil to treat skin diseases for cattle and sheep...

Therefore, Marin now needs to vigorously develop new oil fields, and at the same time plans to discuss with Persia, take the initiative to invest in the development of Baku oil fields, and drill a few more deep wells to obtain more oil.

Only with enough oil, this magically modified "Da Fei" can really be put into use...

However, to say it is "Da Fei" is really an insult to the name of "Da Fei". Because, the speed of this ship is too low...

18 knots looks bluffing, but in fact the speed is only 33.3 kilometers per hour, which is a little faster than the electric bicycle after the speed limit. Of course, this is also related to the fact that the speed of the diesel engine is not as fast as that of the gasoline engine.

In addition, this diesel engine is too shabby as an on-hook...

People's real "big flying" are all imported 250-horsepower marine off-hooks, which are extremely powerful. And Marin's weak chicken version of the magic reform is equipped with a 12-horsepower single-cylinder diesel engine, and the single power is only less than one-twentieth of others...

Therefore, people's real "big fly" can "fly" on the sea. And the weak chicken version of Marin's magic reform Dafei can only rush in the inland river...

However, the speed of 18 knots really shocked the natives of this era. Even Da Vinci, a peerless genius, was a little frightened. If they are asked to evaluate this "weak chicken version of the magic reformed Dafei", they will definitely agree with the title of "Dafei". Because, in the eyes of these natives, a speed of 18 knots is equivalent to "flying"...

(The speed of 18 knots is my guess, but I have never tried it, mainly because I have no conditions to test)

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