The displacement of the "Zheng He" is about 560 tons, and if it is equipped with one person per tonnage according to the wartime establishment, then the "Zheng He" can carry more than 500 people.

If it is a peacetime establishment, then on average 1 person per 4 tons, more than 140 people can be staffed. However, according to the standard of the Dutch merchant marine, it is 629 tons per person, and it is expected to be equipped with more than 90 people.

However, now as a naval training ship, the "Zheng He" has a crew of 150 people, almost 4 tons per person. Among them, the non-commissioned officer students in the Navy account for almost half, about 70 people.

The original "San Juan" retained about 35 people, most of whom were indigenous to Southeast Asia. The remaining 45 people are drawn from the Tianjin Naval Division.

Although the "Zheng He" has been transformed, a number of pulley sets have been set up to help store the canvas. But Edmond Dantès still felt that mast climbing was an essential skill for sailors and cadets.

Therefore, after the voyage, he insisted on dismantling the pulley sets, and had the cadets and sailors group them together, and ordered them to climb the masts and clear the deck every day.

Edmond Dantès's actions greatly displeased the cadets and Chinese sailors, who saw it as persecution to have a simple and safe pulley set and to have to climb the mast on a bumpy voyage.

However, the naval instructors who set off with the ship chose to support Edmond Dantès's order, so that the cadets and sailors did not break out on the ship and rebelled against the Dutchman.

However, this does not mean that they accept this fact. The risk of climbing the mast soon taught the cadets why they were afraid to sail.

In just over 100 days of sailing, when the "Zheng He" returned to Tianjin Port, the casualty rate of the personnel on board had reached 10%. 4 people died, 3 are missing, 3 were seriously injured and 5 were slightly injured.

There were eight casualties from masts, accounting for more than half of the casualties. Of the remaining seven, two were suffering from food poisoning, one fell overboard while heading to the bow of the boat, and three were wounded by the aborigines' bows and arrows while attacking a river valley in the north of Sakhalin.

The attrition rate of ships in normal times is almost four times that of wartime. In the opinion of Edmond Dantès, the performance of these non-commissioned officers and students on this voyage can only be described as unsatisfactory.

Compared with the cabin boy system in European countries to train seafaring talents, the seafaring skills of these non-commissioned officers are about the same as those of the boys who have been on the ship for two years.

However, he also admits that it takes about 8-10 years and a lot of resources to train a boy to become a usable seafaring professional. And there is no guarantee that these boys will grow up to be good captains.

After all, the personal talent of the boys and the personal level of the captain who taught them determined whether these boys could succeed or not.

And although these Chinese Navy cadets have such and such shortcomings, their starting point is much higher than that of the boys. Although they have never been to sea, they have systematically learned the knowledge of navigation.

The success rate of the cabin boy system is about 2 or 3 out of tenth. Therefore, Edmond Dantès felt that after this voyage, the number of non-commissioned officers who were still willing to engage in sailing could leave a third of them, which was already a very considerable number.

After this trial, Edmond Dantès finally understood why His Majesty the Emperor was unwilling to follow his advice to build a large fleet and seize the Spice Islands from the Dutch.

The Chinese navy is not yet accustomed to sailing away from its own coastline, and the farther away from China, the farther away from land, the more panicked they will have. At this time, not to mention combat effectiveness, it is fortunate that there is no rebellion.

This also surprised Edmond Dantès, because the Chinese military and the pirates of southern China were two species. The difference between them is as great as the difference between the Spaniards and the Dutch.

While China's military is so dependent on land, Chinese pirates are fearless at sea, and even corporate ships sometimes have to recognize the special powers of these Chinese pirates in a certain area.

In his opinion, it is inconceivable that the difference between the north and the south of China is so great that it can still be maintained within an empire.

Edmond Dantès's thoughts on this voyage did not interfere with the joy of the steward who had come to receive the supplies transported by the "Zheng He".

In addition to sending people to North Korea and going north for a trial voyage, the "Zheng He" also carried nearly 300 tons of supplies for the construction of the port of Jeju Island and trade between Japan, Sakhalin, and the northeastern coastal area.

The types of these materials are mainly salt, ironware, cotton cloth, boots, mirrors and other daily necessities. These materials are well sold in Japan, Korea, Sakhalin, and the northeastern coastal areas, especially in the latter two regions, and basically whatever goods are brought from the mainland, these natives want.

The only thing that can limit the amount of goods sold is not the consumption of these indigenous people**, but their spending power.

Originally, in the south of Sakhalin, there was a small trade fair in April and May every year. The natives who crossed the sea from the Tohoku coastal area, the natives of the island, and some Japanese merchants exchanged their goods here.

But this year, this small trade exchange was broken. The abundance of cheap daily necessities brought by the Chinese ships quickly crushed the Japanese merchants who had small businesses, making it impossible to sell their goods at all.

The natives of the northeastern coastal area and the southern part of Sakhalin Island, the materials they can use to exchange with the Chinese are mainly all kinds of furs and some gold. Sakhalin Island has a large amount of mountain gold, which is washed by the summer rains and flows along the streams to the rivers below.

It was also under the teaching of the Japanese that these natives learned about the value of gold. But now, the gold is in the pockets of Chinese merchants.

Compared with the small amount of gold, what makes the Four Seas Trading House most fond is the abundant fur animals and fishery resources of Sakhalin.

Just in the bay south of Sakhalin, schools of whales can be found almost everywhere. As the fleet headed for Sakhalin's southern harbor, the navigator had to pay attention not to the immobile reef groups, but to the flocks of whales moving in the bay.

The coastal reef near the bay is home to thousands of fur seals, sea lions, nudibranchs and seals. Whether it's Edmond Dantès or the Chinese sailors, when they see the sea creatures, they feel as if they have arrived in a paradise.

Sakhalin's climate is not suitable for growing food, but there is no shortage of food sources for the island's natives, whether it is the abundant salmon in the rivers, the largest freshwater fish, or the mushrooms, pine nuts, or various wild animals in the mountains and forests, plus these seaside fur animals and whales, all of which are an inexhaustible treasure trove of food for the island's natives.

In fact, many sailors recruited from Shandong did not want to leave after they got to the island. The sailors recruited by the fleet from Shandong were either salt or fishermen, and these people worked hard in Shandong for a year, but they may not be able to fill their stomachs, and suddenly saw such a rich place, and naturally the idea of settling down was born.

The indigenous people of Sakhalin still follow the ancient tradition of hunting and fishing to meet their own needs.

But even so, the fur they have accumulated in a year is not something that the natives of the Northeast Coastal Area and Japanese merchants can exchange.

Although a Chinese ship came here last year and took a lot of fur, it was promised to come back after the beginning of spring. But the local natives didn't take it seriously, they didn't think that the Chinese merchants from afar would be able to take away the fur that their families had accumulated for decades.

However, the three Chinese ships that arrived at the end of March this year did exchange the furs they had accumulated over the decades, including 3 or 4,000 fine mink skins, more than 12,000 fur seal skins, more than 1,600 sea lion skins, and nearly 80,000 other skins.

The profit of this batch of furs alone is already as high as 180,000 taels, and three fleets of the same scale as this voyage can be formed.

And this is just the beginning, and the hundreds of thousands of fur beasts in the south of Sakhalin have apparently been regarded as the possession of this steward. The Ming people, with their advanced weapons, were obviously more efficient than the bone arrow traps of the natives.

The goods brought back by the "Zheng He", in addition to these furs, are a large number of pickled fish. There are about 250 or so fish in a barrel, and each fish is mostly in one kilogram.

Then there's the whale jerky, which weighs about 250 kilograms per barrel. These pickled fish and jerky filled 1,200 barrels. This is also the main cargo that the "Zheng He" brought back.

The wholesale price of these pickled fish and jerky in the Tianjin market is 1 yuan per 10 kilograms, but the purchase from Sakhalin Island, plus the transportation costs, is only 05 yuan per 10 kilograms. These are still processed by the island's natives themselves, not produced by the fishing company this year, otherwise the price would have dropped by about a quarter.

Although the profit of this batch of fish is only 15,000 yuan, which is completely incomparable with the fur trade, the quantity of the catch is only limited by the transportation capacity, and there is no need to worry about the accommodation of the sales market.

Moreover, in the current Daming, these cheap pickled fish and jerky have greatly alleviated the demand for non-staple foods in the capital market.

After the income of the people in Beijing increased, the demand for non-staple foods increased, which made meat, sugar, pickled fish, jerky and other non-staple foods in the capital market extremely tight. In addition to the non-staple food supplements needed by the new army, based on 1 kilogram of meat, pickled fish, and jerky per person per month, the people of the capital alone need to consume 1,000 tons of meat or fish.

The catch brought back by the "Zheng He" just alleviated the demand of the capital for half a month. Next, the fishing boats that are returning one after another are just in time to catch the supply of fish from the Gyeonggi area. This naturally made the steward who received the goods a little happy.