At the moment, he didn't hide his secrets, and taught him how to use the sextant. () The use of the sextant is more convenient and accurate. Li Huamei sails all year round, and she can't put it down immediately after the trial.

"It's really rare to have something so easy to use." When she returned the sextant to Chen Haiyang, she was still a little reluctant, "Can you sell one to me?" ”

"Later." Chen Haiyang said, "It is still difficult for us to make it ourselves. ”

"That lens is hard to make?"

"That's right." While instructing the students to use them in turn, Chen Haiyang said, "It is not easy to grind the lens by yourself. ”

Li Huamei sighed: "Alas, you have so many good things, but you just refuse to sell them." ”

"Pay attention to where the spot falls and hold it steady. That's right! Chen Haiyang did not answer. What can be sold is up to the Executive Committee.

"I feel." Li Huamei approached Chen Hai. Yang said, "You know everything, but you don't want to say it!" The distance between the two was so close that he could feel the woman's breath blowing against the roots of his hair, and his skin shuddered. Some of the good feelings that had been felt cold down again. He did not answer, but shouted loudly to the cadets:

"Start measuring your speed!"

The trainees heard the instruction in groups of three, one person. A small plank was thrown out of the river, one side of which was covered with lead so that it could stand upright after falling into the water. Another student holds a retractable scroll, which is connected by a string and a plank. The plank-throwing student looked at the plank falling into the water, and when the small plank came out behind the vortex at the tail, he immediately shouted:

"Let's go!"

The trainee holding the reel begins to let go of the line. The rope, the reel rotated rapidly, and the rope was constantly released. At the same time, the student with the hourglass immediately turned over his hand, and the fine sand began to flow down rapidly.

"Stop!" As the sand leaked through the hourglass, the timekeeper shouted out the mouth to stop. Cause. The lineman jams the reel.

"3 knots!" The lineman reported according to the notation on the line, "Sail now. speed, 3 knots. ”

Chen Haiyang observed whether their movements were in line with the norms, and he clicked. nodded: "Okay, next group!" ”

Li Huamei looked at him. They said, "You must have learned the art of navigation from the British." ”

“weishenme？”

"This method is only used by British sailors."

The speed of the boat is 3 knots, which is a normal speed in sailing and sailing, although it is a little slower but safe. The Chinese navigation guides and charts in their hands are all drawn based on data from the 20th century, and the coastal situation of Hainan in this time and space is still blank.

As the sun began to set in the west, the wind began to increase, the waves became stronger, and the measured speed had reached 5 knots. Lin Chuanqing was not at ease and grabbed the walkie-talkie hanging around his neck and asked:

"Lookout, lookout, what's the sea situation?"

"Everything works." Yellow Paw, who was in charge of lookout at the top of the mast, returned to the road. From the top of the mast, the angle of view is unusually wide, and of course the swing is particularly violent. From the top of the mast, you can see a number of boats nearby, mostly fishing boats, and occasionally a few large ships sailing with full sails. It seems to be all right.

"How? Can the above stand it? ”

"It's okay, the scenery up there is good, the air is good, haha." Yellow Paws is particularly adaptable.

"How's the clouds going?"

"Altocumulus clouds, moving from east to west."

This means that the weather is normal and there will be no wind and rain.

"Ruan Xiaowu, you climb up and follow Instructor Huang to lookout!"

The child named Ruan Xiaowu looked a little frightened, but he still came out of the ranks, grabbed the rope net on the mast, and Xiangshang crawled away.

The first day passed smoothly, under the breeze blowing, the fleet walked about 40 nautical miles at a speed of 3 knots per hour, because it was sailing along the coast, there was a danger of running on the reef at night, and at nearly 18 o'clock, Lin Chuanqing found a deserted harbor on the shore to spend the night. The latitude and longitude of the lower locality were measured: 19°44'0"N, 109°9'0"E. After checking the map, this place is where the Yangpu Port in Danzhou is located.

Yangpu is one of the largest deep-water ports in western Hainan, which is empty and barren in this time and space. The harbor is large, with a few sandbars crisscrossing it, and in the distance you can see a few sailboats moored on the shore Kao, as well as a small fishing village.

Drop off a rowing boat and go down to probe the depth, determine the channel and mooring the boat. The Zhenhai put down the paddle machine and dragged the Hangzhou behind it to drive cautiously at a low speed towards the port.

Li Huamei stood on the stern tower and looked at the splashing water below: it turned out that the reason why they didn't load more guns was here. It seems that it is not only those iron ships that can sail without sails and oars, but also wooden boats. This is something they can do with something on the ship. And this thing should be in a cabin at his feet......

Wang Luobin decided to stay for a day or two in Yangpu, the deep-water port with the most development value in the western part of Hainan Island. In the future, the transit regime will focus on the development of ports, and it is necessary to collect more information about this place. The assault team was immediately ordered to go ashore, control the form, and by the way, replenish some food and water.

From the binoculars, the coast of Yangpu is very barren, but there is a fishing village on the shore, and the special reconnaissance team landed in a rowboat with the navy and immediately broke into the village. There were only a dozen or so households in the whole village, and more than half of them had already run away--as soon as they saw strange boats approaching the port, the local fishermen all ran away, leaving only a few old and weak, and bowed one by one when they saw them coming. Fortunately, what they said was still in high language, and it was only through the local recruits that they knew that they were begging not to burn down the house and rob the boat, but to take the fish if they wanted it.

Xiong Buyou of the Ministry of Foreign Affairs comforted them with kind words, saying that he was just going ashore to replenish some water and food, and that he would give money according to the price of everything he would. I also gave some gifts such as sewing needles and sugar, and calmed down a few old men. The rowboats here have brought people ashore one after another: the crowd will be a little relieved after a day of crossing, the feeling of seasickness will pass, and their appetite will be restored. They all made up their minds to go ashore and go around. There are also people who offer to go ashore to hunt and open meat. Let's see if there is any fish, vegetables and eggs in the village to buy. Wang Luobin thought that he would have to delay Yangpu for a day or two anyway, so it would be better to let everyone go ashore.

After the marines came ashore, they quickly took control of the whole village, and those who had already escaped did not care about him. Tents and barbed wire were quickly set up next to the fishing village, and observation posts were set up on the nearby high ground to settle down temporarily.

Amateur hunters went on a frustrating hunting operation on the shore. The local area can be called more than three: there are many wastelands, many stones, and many cacti, and under these three more, there is basically not even a hare to fight, and there are naturally no wild vegetables. After a long day, I basically returned empty-handed.

That night, Chen Haiyang had to continue to discuss astronomical surveying with Li Huamei in the middle of the night. She demonstrated how to use the quadrant on the spot, and the trainees were surprised by the difference between the data from the globe and the sextant. Although the error rate is less than 5%, less than 0.1 degrees, it is converted to 9 kilometers. On the vast sea, this error is enough to make many fatal mistakes. It's no wonder that early voyagers preferred to sail along the coast – after all, the coast's landmarks were more accurately measured.

The next day, the exploration team surveyed a part of the harbor, and the navy measured the water depth and selected a number of berths. The survey of the surrounding natural environment concluded that the area is very poor, and there are basically no large natural rivers, so it is difficult to get water. Arable land is scarce and there are fewer trees.

"If we can solve the problem of industrial water, it will be a good place for industrial development, and it will not occupy agricultural land at all, and it will not damage the environment." Wang Luobin sighed after the field investigation, "The environment is bad enough. ”

Early in the morning of the third day, the fleet continued to depart. After several days of stop-and-go investigations, the ship finally arrived at the mouth of the Changhua River at noon on the fifth day. Here the Changhua River is divided into two rivers in the north and south into the sea, the mouth of the South River is called Sanjiagang, and the Beijiang River goes south around the county seat and enters the sea called Wuni Port, which is relatively close to the county seat. It is the main port of Changhua County.

But from Lin Chuanqing's telescope, it is clear that the port of Wu Ni in Bac Giang is not suitable for mooring, there is a large area of siltation, except for some small fishing boats, there is no shadow of a ship parking.

Li Huamei is quite familiar with the hydrological conditions here: "Kao Sanjia Port, Wuni Port 200 ships will run aground." ”

So the fleet stopped at Sanjiagang on the Nanjiang River, and when the ship sailed into the harbor, it saw several villages on the shore, and some broken walls. It looks like it used to be a military station, but now it's deserted.

Spring is the dry season, and the flow of the Changhua River is very small, and the rivers dry up and dry there, leaving out the snow-white fine sand and withered aquatic plants in the riverbed. On the north bank of the Changhua River is a plain, and most of the vegetation along the river has been very destroyed, forming a dry savannah environment similar to the African savannah, and there are sand dunes in many places, which go far into the interior.

At the end of the plain is a group of rolling hills, the vegetation is still dense, and the visual height is about 200~400 meters. The south bank of the Changhua River is also a plain, with faint paddy fields and a city - it should be the county seat of Changhua in the Ming Dynasty.

"Where is the quartz sand mine in Haiwei Town, which Mr. Wen said?" Bai Guoshi asked. The local quartz sand is the key target of this exploration, the local quartz ore, the original ore silica content is 99.8%, the iron content is 0.1%, the impurities are less, the particle size is uniform, it is rare in the country, and the reserves are huge.

"Isn't that it?" Wang Luobin pointed to the snow-white sand on the beach in the distance.

"What about Haiwei Town? There should be a town—"

"It's 1629."

Wang Luobin ordered the boat to be put down, and several members of the exploration team drove the sampan to the beach, and after a while, they got a few rattan baskets of sand from the other side of the beach, Wang Luobin pinched some and looked at it carefully, and the sand in the center of his palm was as white as snow in the sun. Of course, he knows the goods, so haode quartz sand, used to make wine bottles and mirrors is too wasteful. It can also be used as raw materials such as circuit fuses and display screens.