The Rise of the European Emperor

The only one who was not stunned was probably Marin, a traveler who had seen the world. He has seen a video of a catamaran in later generations. The catamaran sailing yacht ran directly at a high speed of 30 knots, which is almost the speed of a modern warship.

However, Marin shook his head, because he knew the shortcomings of catamarans...

Sure enough, after sailing a few times, the weakness of the catamaran was exposed—during high-speed navigation, because the buoyancy of the left and right hulls is often different, it is easy to generate stress moments on the connecting beams.

After sailing several times, the wooden catamaran used for the test, the wooden beam connecting the two ships, broke directly because it could not bear the strong moment generated by the high-speed sailing... Fortunately, there was a speed monitoring ship nearby, and the ship was rescued. Sailors, or almost killed...

Marin shook his head, didn't say anything, but asked the people from the steel factory to send stainless steel beams. At the same time, people made the left and right sub-hulls sharper and hollow, and the outside was covered with stainless steel sheets to prevent seawater corrosion and increase strength.

In this way, the speed of the experimental catamaran soared to 25 knots again, scaring the master craftsmen of communication design so much that they couldn't close their mouths...

Because of the use of steel beams, there was naturally no accident of beam breakage this time. But the problem is - the steel beams of Nima stainless steel are really rare and precious!

What they built was just a 10-meter-long test boat, all of which were made of stainless steel beams and skins, which was acceptable. However, if a big ship is built, how much stainless steel is needed to make beams!

These days, the preciousness of stainless steel is not lower than that of gold. Moreover, the chromite ore discovered by Marin's Wiltz on the island of Cuba has only a few hundred thousand tons of reserves, so he dare not squander it.

Therefore, everyone knows that the speed of the catamaran is very fast, but they can only sigh - the stainless steel beams that are not afraid of seawater corrosion cannot afford...

In the end, the master craftsmen of the Beihai National Military Shipyard could only keep the 10-meter-long catamaran speedboat that used stainless steel extensively for testing and research. As for the promotion of construction, it is unrealistic.

And through the wonderful test of this stainless steel catamaran sailing speedboat, those master craftsmen also believed in the triple speed that Marin said. Because, when the catamaran was tested, its speed against the wind was much faster than that of the traditional square sail boat, several times faster. In this way, the overall speed is three times that of traditional ships, which is also normal.

The only problem is that during high-speed navigation, due to the huge difference in buoyancy between the left and right hulls, the strength of the beam connecting the left and right hulls is very high. In addition, the corrosion of seawater is very strong, and only a small catamaran speedboat with a displacement of tens of tons can be produced at most.

If you want to make it bigger, there are not so many stainless steel beams available.

In fact, it is also possible to use ordinary steel beams if there is a waterproof paint. But there is no waterproof paint in this era, and only steel beams made of stainless steel can be used as the beams of catamarans. Therefore, the cost of construction is very high, and the ship is not large.

However, it is still possible to keep a few catamarans for the dissemination of confidential information. As for the issue of leaking secrets, as long as the curtain is cast on the hull, the mystery of the catamaran cannot be seen from a distance.

Moreover, even if others see the mystery of the catamaran, they cannot build it. The master shipbuilders under Marin have tested it before—the wooden beams are easy to break during high-speed navigation...and the metal beams must be resistant to seawater corrosion...

In the end, only the master craftsmen under Marin can make such a catamaran sailing boat, and it is not big.

In short, even if this technique is learned, it cannot be used. There is no way, the problem of the beam stress of catamaran sailing ships, not to mention this era, is also a big problem in shipbuilding in later generations. Therefore, although Polynesian catamaran canoes have been discovered long ago, people have been unable to apply this technology to large ship construction. It was not until the late 20th century that technology developed to a certain extent that pure steel catamarans began to be built. This kind of steel ship with an overall structure can avoid the problem of insufficient strength of the beam of the catamaran.

Therefore, Marin is not afraid of others learning the catamaran technology, because they can't use it after learning it. On the contrary, it is the flying shear boat technology and the underwater fin stabilizer technology. Because the principle is too simple and there are no restrictions on the materials, Marin is worried that others will steal it.

But what frightened Marin was that the 50-ton stainless steel catamaran he used for testing was actually taken by Caesar, and he clamored to drive to London to take Margaret's sister to the sea... …

Marin was so angry that he beat Caesar, why? Because it's too dangerous!

Although it is said that the catamaran sailboat with all stainless steel structure is very safe and stable. However, if it really encountered a big storm at sea, it would be just as dangerous. After all, due to material reasons, this ship can only be built with a displacement of tens of tons, and its ability to resist wind and waves is limited.

Caesar is his heir, if he takes Princess Margaret to the sea and dies, it will collapse that day...

Therefore, Marin beat Caesar without hesitation, and asked him to say "a gentleman does not stand under a dangerous wall" 10,000 times in Chinese...

But Caesar is a teenager after all, and he likes catamarans, which are "cool" and very fast boats. It's normal to think of taking his girlfriend out to sea.

Moreover, this kid is very smart. Regarding Marin's concerns, he directly suggested-to build five stainless steel catamaran sailboats with a displacement of 50 tons. The 5 ships acted together, even if the ship he was in was in danger, the others would always be able to rescue.

In addition, Kaiser also proposed to install a diesel propeller system at the rear of the stainless steel catamaran yacht while fitting the gaff sail. In this way, when encountering a larger storm, the sail can be completely lowered and driven by a diesel engine...

"Yo ho, isn't this the design of the catamaran sailing yacht played by the rich and handsome later generations?" Marin was surprised.

In later generations, the catamaran sailing yachts played by many wealthy people are equipped with diesel engines at the same time. When not using sails, it can also run at a speed of more than ten knots.

However, people use a Mercury engine with a single on-board horsepower of more than 250 horsepower. The horsepower is not comparable to the 12 horsepower single-cylinder diesel engine currently owned by Beihai.

After testing, even if four 12-horsepower single-cylinder diesel engines are installed in parallel, the catamaran can only run at a speed of seven or eight knots without using sails, which is far from the speed of a machine running more than ten knots. big. Of course, being able to run at this speed without using a sail has shocked many people.

In addition, because of the low side of the catamaran, the diesel engine is easily exposed to seawater when sailing "jumping" at sea. Therefore, in order to prevent corrosion, it is necessary to use stainless steel to make the casing of the diesel engine, which greatly increases the cost

"Dad, hurry up and get someone to build another four catamaran sailing yachts! I'm going to take the catamaran yacht team to London to take Margaret's sister out to sea!" Caesar acted like a swinger, letting Marin was dumbfounded.

"This kid...well, is he already in the second year of middle school?" Marin thought about it, and it seemed to be true. Caesar is now 14 years old, exactly the age of the second year of middle school...