This huge gantry crane is just a large-scale equipment purchased by the shipyard.

The gantry crane is 25 meters high, which is equivalent to an 8-story building with a length of nearly 30 meters.

In shipbuilding industry, gantry crane is one of the most convenient and important tools. Any large workpiece can be easily lifted and transported to the designated position by it.

For example, if a few hundred kilogram component is transported only by manpower, it may take several hours. But with a gantry crane, it can be finished in a few minutes, and the efficiency is more than 10 times higher.

As a mechanical dog, such a time-saving and labor-saving artifact that can greatly improve the speed of shipbuilding, how can Renault not roll out one?

So before deciding to refit the unfinished Haichao, Renault first decided to build a large gantry crane.

What material should be used for this giant crane?

Steel?

No!

Only the earth can do this. In the alien world, Renault has a better choice.

The giant crane is huge in size. If steel is used, the consumption of steel is amazing. It needs at least 50 tons.

Despite Renault''s magic power steelmaking process, the current shortage of manpower and transportation capacity, the supply of iron ore can not keep up with the current situation, and the lack of steel in the territory makes it impossible to pump 50 tons of steel to build the gantry crane.

In addition, the super long crossbeam with a length of up to 30 meters is still the main load-bearing part. It is estimated that ordinary steel is enough, so the star blue ferroalloy must be used.

But there are too few star blue iron in the territory. It''s a waste to use it on a big guy like a gantry crane.

The material Renault intends to use is the trunk of a tree, which is called "iron tree" by the common people of Haichao islands.

However, this Tieshu is not the Tieshu on the earth. The alien Tieshu is a unique tree on the major islands in the storm area. Its hardness is amazing and stronger than ordinary steel, which is why it is named "Tieshu".

It is also because the iron tree is so hard that it can''t be cut with an axe, so the people of other countries have no love for it.

This is normal. The knives are broken, and there is nothing wrong with the tree. Only a fool would like to cut such a tree.

From this point of view, the alien Tieshu is much stronger than the same name plant on the earth, which sells dog meat with sheep''s head. The earth Tieshu is just a kind of hardwood, which can be cut quickly with an axe.

The two species also have something in common, that is, they grow very slowly, which is the main reason why they are only found in storm waters.

Ya grows too slowly to compete with other trees in other places.

However, in the stormy sea area with frequent storms, the trees that grow faster than it have been severely cleaned up by the storm. On the contrary, with their hard trunks and extremely large roots, the iron tree can survive the continuous storms and occupy a place on the island.

In addition, after the iron tree is dried, the density is less than 16% of the steel. The gantry crane built with it is not only stronger, but also much lighter than the steel gantry crane, so it will be easier to operate.

It''s not difficult to roll out this big crane. It''s difficult to find suitable iron trees and transport them back.

Even though there are many iron trees in the Haichao islands, there are few more than 30 meters. Renault strolled around the nearby islands for half a day before he found five iron trees that meet the requirements.

Next, it took half a day for logging, shipping, and delivery to the shipyard. In order to roll up the crane, it took a whole day just to prepare the materials.

After peeling and drying the tree, the lifting officially starts.

With the help of reverse heat conduction, the process of rolling and lifting is very fast. It''s enough to burn the trunk into the required shape and then assemble it. It took Renault only half an hour to finish it.

Among them, four short iron trunks are used as columns, and the longest one is used as beams.

Finally, two large bases and corresponding lifting appliances are hoisted to the gantry, and a large shipbuilding equipment is produced.

Four pairs of high load-bearing wheels are installed on the base, and thick NIMA rubber tires are installed on the metal wheel hub to facilitate the movement of the gantry crane.

Such an amazing size naturally makes the gantry crane the highest and largest heavy equipment in the territory.

Anyone within 10 kilometers of the shipyard can see the gantry crane at a glance, because it is so eye-catching.

In fact, as soon as the gantry crane came out, it caused a sensation on the island of Theron, and local residents came to see it in droves the next day.

Even in Odin Island, many people came to see the gantry crane, which made the express flights between the two islands sell a lot more tickets.

The price of a ticket is 15 copper nals, a total of 30 copper nals for round trip, which is not cheap for most people, so we can see the fame of the gantry crane.

Of course, most people are not allowed to enter the shipyard and can only have a look at it from a distance.

In addition to the gantry crane, the dock has also undergone a certain transformation. The ground has been specially trimmed and paved with a thick layer of cement.

Compared with the original dock, the renovated dock has the biggest difference - it is dry dock.That is to say, there is no water in the dock.

It doesn''t sound like much, but it''s very rare in a foreign world.

Considering that the sailboat needs to be undocked, the dock ground must be lower than the sea level, or only slightly higher than the sea level, so that there is enough water depth in the dock to float the sailboat at high tide.

This brings another problem: water leakage.

The larger the dock is, the more difficult it is to prevent side leakage, and the more difficult it is to drain after leakage.

Because it can only be scooped by hand, but only by manual work, it has to be arranged until the year of the monkey?

In addition to the frequent tides in other places, the tide rises several times a day, so the leakage is naturally more.

No matter how well leak proof it is, what should we do when it rains? What if it rains heavily?

So most of the time, there is always more or less a layer of water in the dock.

In this case, working in the dock is equivalent to soaking in the water for more than ten hours a day.

Will the shipbuilders feel comfortable?

Of course not.

Is it comfortable to soak your feet? Is it comfortable to soak out a body of rheumatism?

But in order to support the family, no matter how hard it is.

There is a real dry dock, but it depends on God''s face. If the sun is exposed for half a month, the dock will be dry naturally.

But in Lord Renault''s territory, as long as it doesn''t rain, the dock is always dry.

Because, pump!

If there''s a leak, give it a tube. No, take a tube.

One is not enough for two. Lord is so willful.

The large-scale water pump driven by 100 kW magic motor can pump water at a speed far higher than that of 100 workers.

On the first day when the pump was pulled to the shipyard, watching the rolling sea water being pumped out of the dock, it instantly became the favorite of all shipbuilders.

At this time, in the dock, Renault and Elon were standing by, watching the craftsmen operating the gantry crane to lift a heavy large metal component into the ship, chatting quietly.

Renault watched as a thick metal beam nearly 6 meters long was slowly put into the hull and asked, "Elon, how many tons of heavy oil can the black oil distillation plant accumulate before going to Midway Island?"

Elon looked down and thought for a moment, and replied, "Sir, due to the limitation of the transportation capacity of black ice, the distillery can only extract 120 tons of black oil per day."

"The production rate of heavy oil is 40%, and it can only produce about 50 tons per day, that is, more than 100 barrels. According to the current production rate, before departure, it is enough to accumulate 600 tons of heavy oil..."

Renault asked, "how much heavy oil does midway need to prepare in advance if it''s going to make a trip to and from the mainland of glow?"

Elon quickly gave the figure: "Midway Island is more than 740 nautical miles away from the mainland. With the fuel consumption rate of Odin, it needs to burn 0.12 tons of fuel per nautical mile when it is fully loaded..."

"According to this calculation, 90 tons of heavy oil are required for one-way trip, and 180 tons for round trip trip. Considering 20% safety redundancy, 220 tons of heavy oil is an ideal value..."

"Of course, this is the extreme case of sailing completely relying on the thermal magic engine. If the safer half sail is adopted, the fuel consumption can be reduced to 60% of the original, that is 130 tons..."

"If it is full sail, it can reduce more, but in the storm season, we do not recommend using full sail even for multi hull ships..."

Renault frowned and turned to stare at Elon: "what if we use the tides? Have you calculated the relevant data? "

Elon''s response was extremely quick: "the tonnage of the modified Haichao is larger, and the fuel consumption may rise to 0.15 tons of fuel nautical miles. Based on this, it is estimated that 160 tons of heavy oil will be loaded in the fuel tank..."

Although the data is not ideal, Elon''s performance has made Renault extremely satisfied.

Being able to answer questions without thinking shows that Elon is very familiar with these data, which also shows that he is a very dedicated and competent director of navigation.

Renault nodded to Elon''s approval: "Elon, well done!"

Elon immediately bowed respectfully and said, "Sir, this is what I should do..."

At this time, a burly figure suddenly trotted all the way, Renault turned to look.

Ludford!

Renault remembers this guy, Elon''s deputy, who is also a very capable guy.

Seeing that the LORD looked at him, Ludford speeded up his pace and ran to Renault. Without even breathing, Ludford bent down and said, "Lord All components have been hoisted, you can lay metal keel... "