Chapter 1942： Age of 2

The only one who is not stunned, I'm afraid only Marin, the traverser who has seen the world. He had watched a video of a catamaran afterwards. The catamaran yacht of the others, but ran directly out of the high speed of 30 knots, almost the speed of modern warships.

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

Sure enough, after several voyages, 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 produce stress moments on the connected beams.

After several voyages, the experimental catamaran wooden boat connected to the wooden beams of the two ships, because it could not withstand the strong torque generated by high-speed navigation, it broke directly ... Fortunately, there was a ship monitoring the speed nearby, and rescued the ship Sailor, or almost killed ...

Marin shook his head and said nothing, but asked the steel plant to send stainless steel beams. At the same time, it makes the left and right sub-hulls more sharpened and made hollow, and the outer surface is also covered with stainless steel iron to prevent seawater corrosion and increase strength.

As a result, the speed of the catamaran used in the experiment soared to 25 knots again, which scared the master craftsmen of communication design from closing their mouths ...

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

All they built was a 10-meter-long test boat, all with stainless steel beams and skins, which was acceptable. However, if you build a big ship, how much stainless steel will be needed to make the beams!

This year, the preciousness of stainless steel is not under gold. What's more, the chromite ore found on the Cuban island by Wilin's men has only hundreds of thousands of tons of reserves, and he dare not waste it.

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

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

And through the wonderful test of this stainless steel catamaran speedboat, those master craftsmen also believed that Marin said that the speed was three times faster. Because, during the test of this catamaran, the headwind speed was much faster than that of the traditional horizontal sailing boat, and it was several times faster. In this way, the overall speed is three times that of traditional ships, which is 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, seawater is very corrosive, and it can only produce a small catamaran speedboat with a displacement of tens of tons at most. If you want to make it bigger, there are not so many stainless steel beams available.

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

But if a few catamarans are reserved for the dissemination of confidential information, it can still be done. As for the leak, as long as a curtain is placed on the hull, the mystery of the catamaran cannot be seen from a distance.

Moreover, even if others see the secret of the catamaran, there is no way to make it. The shipbuilding masters under Marin have tested it before-the wooden beams are easy to break during the voyage ... and the metal beams must also be protected against seawater corrosion ...

In the end, only the master craftsmen under Marin could build such a catamaran speedboat, and it was not big.

In short, this technique will not be used even if it is learned. No way, the stress of the beam of the catamaran, not to mention this era, is also a major problem in shipbuilding in later generations. So, despite the discovery of Polynesian catamarans, people have never been able to apply this technology to the construction of large ships. It was not until the late 20th century that the technology had reached a certain level before construction of pure steel catamarans began. This kind of steel boat with integrated structure can avoid the problem of insufficient strength of the catamaran crossbeam.

Therefore, Marin is not afraid of others learning the technology of catamaran, because they can't use it. On the contrary, it is the flying shear 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 learn.

But what scared Marin was that the 50-ton stainless steel catamaran he used for the test was actually taken by Caesar, shouting to drive to London, and taking Sister Margaret to the sea ... …

Malinton was so angry that he beat Caesar, why? Because it is too dangerous!

Although all stainless steel catamarans are safe and stable. However, if you really encounter a big storm at sea, it is just as dangerous. After all, due to material reasons, this ship can only make a displacement of dozens of tons, and its ability to resist wind and waves is limited.

Caesar was his heir. If she took Princess Margaret out to sea and hung down, it would collapse that day ...

Therefore, Marin did not hesitate to beat Caesar and let him say 10,000 times in Chinese, "Gentleman is not standing under a dangerous wall" ...

But after all, Caesar is a teenager, and he likes catamarans, which are very cool and very fast, and want to take their female companions to the waves. This idea is also normal.

Moreover, the child is very smart, and directly advises Marin about the construction of five stainless steel catamarans with a displacement of 50 tons. The five ships acted together, even if the ship he was riding in danger, others can always rescue.

In addition, Caesar also proposed to install a diesel propeller system at the rear of the stainless steel catamaran speedboat at the same time as the rigging sail. In this way, when encountering a larger storm, you can lower the sail and use the diesel engine to drive ...

"Yo ho, isn't this the design of the catamaran yacht that the future generations are rich and handsome to play?" Marin was surprised.

In later generations ~ www.novelhall.com ~ many of the wealthy play catamaran yachts 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-hook horsepower of more than 250 horsepower, which is not comparable to the 12-horsepower single-cylinder diesel engine currently owned by the North Sea country.

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. Big. Of course, being able to run at this speed without sailing has already shocked many people.

In addition, due to the low side of the catamaran, the diesel engine is prone to get into the sea water when "jumping" at sea. Therefore, in order to prevent corrosion, it is especially necessary to use stainless steel to make the shell of the diesel engine, which greatly increases the cost

"Dad, hurry up and let people build four other catamaran yachts! I'm going to take the catamaran yacht team to London to take sister Margaret to go out to sea!" Marin was dumbfounded.

"This kid ... well, is it the age of S2?" Marin thought, it seemed really. Caesar is now 14 years old, exactly the age of S2 ...