The harvest of this voyage is not only personnel, the problem of sugarcane has also been solved, Luo Dacai told Hong Tao in a reply to Hong Tao a very faceless thing, those sugarcane in Jinhewan are not planted wrong, the new sugarcane will grow after at least a year and a half of development, Luo Dacai has found someone to go to the countryside near Guangzhou to hire people familiar with sugarcane planting for Hong Tao. As for the matter of squeezing sugar from sugarcane, Luo Dacai said that this matter was too big, and he couldn't be the master, so he had already sent a letter to Luo Youde, asking Luo Youde to quickly come back and discuss with Hong Tao personally.

Knowing that his sugarcane was not white, Hong Tao was relieved, so he simply asked Huanghai to continue to open up the wasteland with the slaves, planting all sugarcane and cotton. The rice field is a thing, as long as the hundreds of people in Hewan can eat enough, it doesn't matter if there is less, you can buy it from everywhere. As long as you have money in your hand, you don't have to worry about rice here in Southeast Asia, there are rice-producing areas everywhere, and it is so cheap that people dare not buy it. If it weren't for his lack of transportation capacity, Hong Tao wouldn't even want to plant rice fields, and it would be a waste to spend his limited labor on the production of such things that have no economic value.

In addition to the harvest, it also found shortcomings, no wonder the navies of various countries in the later generations ran out to practice when they had nothing to do, this thing really makes sense. As soon as you go out to sea and encounter different sea conditions and different situations, especially emergencies, you can immediately find out what shortcomings and deficiencies your ship, personnel, and weapons have.

This voyage, or a voyage across a large latitude, exposed many problems on the Haibo. The first is the problem of the ship itself, which leaked as soon as it reached a cold area at high latitudes, and the leakage was not too serious, but it was also leaky. Hong Tao also checked it with the Wen family, it is not a problem in the shipbuilding process, but thermal expansion and cold contraction, there is no solution! It can only be that when building ships in the future, try to choose as many wood as possible that is denser and less easy to deform. However, in that case, the weight of the hull will increase, and considering that his future range of activities will not be too far north, Hong Tao still decided that the shipbuilding materials will remain the same.

The second is the issue of the crew's livelihood, food, water, clothing, and medicine. These crew members were accustomed to eating rice, and had to make a fire to cook at every meal, and in case of high sea conditions or tense battles, they had to go hungry before they had time to cook. Therefore, the food structure in the future should be changed, in addition to bringing rice when going to sea, you also have to bring some fried rice, in case you don't have time to cook, just eat fried rice, at least not hungry. The problem of vegetables also has to be studied, the Tan family is used to eating all kinds of dried sea vegetables, but eating too much of that thing is too disgusting, too fishy, and the nutrition is not necessarily balanced. This problem is very easy to solve, the sprouts on the ship were invented by the Chinese, so it is normal to use them, and all kinds of dried beans can be carried. Now start the trial on the shore, how to send it, how to send it in order to save more water and have a better effect, we must sum up a practical standard, one person can not do it, all crew members must learn.

Hong Tao has actually done a good job of letting the crew drink boiled water as much as possible, and the water they carry is also heated and sealed with crockpots. But it still can't be stored for too long, especially in the tropical sea, 20 days is already the limit, and if the time is longer, the water will deteriorate, not only does it taste bad, but also easily causes gastroenteritis. Diarrhea is the most feared thing in this era, and it is good to eat two slices of Nicholas Tse in the future, but in this era, it is very likely to pull out dehydration directly, and the result is to pull to death.

This problem is not in line with Hong Tao for the time being, he can't get it out of the barreled water tired to death, let alone vacuuming, he can only rely on the supply point, that is to say, try not to sail at sea for too long, one and a half months is the limit, and he can stop and replenish the supply, but it can't be done, then he can only rely on your stomach.

The problem of clothes is easier to solve, it is nothing more than to redesign some tight-fitting thick clothes that are warmer and do not hinder work. But there is one more thing that makes Hong Tao scratch his head, and that is medicine. Getting sick is an apocalyptic existence for Hong Tao, and he is willing to pay a great price in order not to get sick. It's a pity that at present, there is no place to buy antibiotics and anti-inflammatory drugs if you have money, so you can only rely on traditional Chinese medicine and traditional Chinese medicine. As for which kind of Chinese medicine and Chinese medicine are suitable for navigation, Hong Tao is not clear, he really does not have the slightest research on these things.

In the letter to Luo Dacai, he specially pointed out that whether it is spent money to hire or make up nonsense or deceive, he must get a few doctors for himself, and not a doctor who specializes in treating rich and noble ladies, he must be the kind of doctor who is good at first aid and dealing with plague and infectious diseases. As for where Luo Dacai goes, Hong Tao can't care about it, if he can't even find a few doctors, then he should really think about changing a partner, just making money does not bear obligations, what is the use of this kind of partner?

Finally, there's the issue of weapons! This problem is the most deadly. Is whaling crossbow and incendiary grenade any good? The answer is so. The main problem is that the range is too close and the power is too small! Due to the problem of the crossbow's firing ability, the iron cylinder on the crossbow arrow cannot be made too big, and unless the power problem is invented, Hong Tao can't think of an effective solution. And due to the space problem on the ship, the crossbow can't be made too big, and if it's too big, the number of equipment will be small. Hong Tao, a crossbow like the one on the Mongol sand boat, also brought back one, but he only glanced at it a few times and then gave up. If you make such a big one, the Haibo will be equipped with at most 6 aircraft, and there will only be two or three on one side, so it is useless to have range but no density.

What to do? Hong Tao hit the idea of the Hotchkiss grenade that had been successfully developed. Without artillery to fire these shells, and whaling crossbows can't be fired, could there be another way to throw it farther? In the current state of technology, there are also, such as trebuchets. This simple delivery device using the principle of lever is not difficult for Hong Tao, and the production technology is not difficult, and the effect is also very good after making it, and a guy can throw a grenade more than 200 meters away. However, this thing is too tall to be used on a battleship, especially a European sail battleship like the Hypo, which is full of rigging and transverse rods, and there is no room for trebuchets to wield.

"Alas, we still have to play with the things we did when we were young, we are people who have pursuits, and we are people who have escaped from low-level interests, but the reality is very cruel, I don't think I will give a chance! Come on, get on my big slingshot! I don't believe it, even the bricks can be thrown to the opposite side of the second ring road, and a broken iron ball can't be thrown! "Hong Tao was really forced to be anxious, people can glow with infinite combat effectiveness in a hurry, and when he thought about and tried all kinds of weapons and equipment he could think of, and still couldn't meet the requirements, he finally found a suitable thing, that is, a big slingshot!

Hong Tao was an extremely annoying child in his previous life, he couldn't be idle every day, he always went around being naughty, using a big slingshot to launch bricks, and smashing the buses on the Second Ring Road was a game he invented. He was only in elementary school at the time, and he was very keen to invent all kinds of weapons for children to fight each other. Other people's slingshot guns are one shot, he asked his uncle to help make three shots, other people's bullets are stacked with paper, at most with calendar paper, he feels that it is not powerful enough, he uses No. 8 lead wire to make bullets, just breaking other people's glass, other people's heads, so that half of the parents' salary is all compensation. That is, the children of that year are not as valuable as in the later life, if they are placed in the later life, the two children will have to bankrupt his family, and whose children will go home with blood on their heads, and the parents must not be anxious.

His most brilliant invention was a large slingshot capable of firing traditional multi-purpose ammunition such as bricks. This thing is made of infusion leather tubes as elastic materials, eight leather tubes are connected into two rubber bands more than one meter long, and a half-drawn leather hat is tied to the back as an ammunition compartment. Put two leather bands on the steel bars of the subway construction site, put the bricks into the leather hats, and the three children pulled the rope behind the leather hats to retreat with their lives, and then let go...... Sou! The bricks flew out, drawing a wonderful arc, and the farthest could fly dozens of meters away on the Second Ring Road. If you cut the weight of the ammunition in half and put half a brick on it, then you will fly directly into the moat on the other side of the second ring road, and the firing distance will definitely be seventy or eighty meters away.

It's a pity that before he could exert his power, he was discovered by the engineers on the construction site, which led to a pursuit battle. During the battle, in order to run faster, Hong Tao had no choice but to throw away the leather pipes, which were not easy to come by, and he stole them after more than half a year in his mother's hospital. After that, he began to be obsessed with making model airplanes again, and he never picked up this craft again, and the big slingshot never appeared on the side of the second ring road.

Now Hong Tao is going to repeat the old trick, it doesn't matter if there is no leather pipe, we have whale baleen and bamboo strips as elastic materials, and whale tendons as leather strips. The mixed posts of whale baleen and bamboo strips tied to the thickness of the arms are fixed on the side of the ship, one meter and one pair, tied with whale tendons, and used crocodile skin as ammunition holds, and two ropes with handles are made behind them, and the deck is nailed one by one. Two people pull the handle, lean back, step on the ground and pull back, adjust the angle and direction while pulling, and then let go!

Hey! The grenade flew out, the distance, it's absolutely no problem to shoot a hundred meters, it's accurate...... Purely by the feel of the launcher! Feel this thing can be trained, Hong Tao can throw the sea rod with a lead sinker 100 meters away to hit a lifebuoy, the accuracy rate is more than 70%, only the hand is familiar. Since you are familiar with it, the crew can naturally practice too!

With the launch device, there is still a lack of an ignition device, which is easier to do, and with that kind of cork, calculate the approximate flight time, and lengthen the length of the cork is enough. Each gun emplacement is equipped with three people as standard, two people are responsible for firing, and one person is responsible for loading and igniting with a fire rope, which is quite suitable. The transmission frequency can be said to be very, very fast, and if it is trained, it is ...... Take aim at...... Dot...... The kung fu of letting go, a shot in ten seconds is definitely very loose. This is still a full-range shot, if you zoom closer to about 50 meters, you don't have to play with your life, and one shot in five seconds is not fast.