"The entire crew is in position and ready to collect data on the sea area. Captain Mo Quan's sonorous and powerful voice came out of the marine amplifier for the first time, and it was the first time that the whole ship was ordered by radio for so long, so everyone had an inexplicable sense of solemnity, especially a few people in Beiting, who felt a little heavy in their hearts, after all, this was their suggestion, and for every ship sailing in the vast sea, it was only the entire staff who were generous to the danger, and no one could be left alone.

Once again, everybody is busy, and once it's decided, everybody gives it their all and they have to give it their all, and that's the unique way of working in a unique environment.

Captain Mo Quan and Captain Qu Yihui once again became the commander-in-chief of this adventure, but this time Chen Tianyu also participated in the command, after all, he put forward the suggestion, and the content that needs to be explored is probably only known to him, and the others are just cooperating to put it bluntly.

The person who controls the Lisha is still the first mate Lu Zunyue, this person is relatively calm and can handle most emergencies, and everyone is more relieved to hand over the task of manipulation to him, as for the other positions of the Lisha, they are just step-by-step, and at most some personnel who specialize in collecting data have been added.

This time to enter the hinterland of the Dragon Triangle, the data that needs to be collected is probably as follows:

The first is hydrometeorology, and the meteorological part of this work is still led by Xia Yuanshen, the second deputy of the work, but this time two hydrological observations have been added, that is, the bathymetry of nautical instruments and the measurement of the flow of water mounds.

The Lisha is equipped with a more advanced sounder, which can measure the depth of 3000-5000 meters, and is now in charge of two professionals from the coast guard, but they seem to have nothing to do at present, and there is no way to display the water depth on this instrument, the reason is actually very simple, the water depth here has already exceeded 5000 meters, and it has reached the measurement limit of the instrument, and the two had to lean on the chart table with a wordless chat, and occasionally look up at the instrument, but it always shows boring numbers - Four large zero eggs.

However, several coast guard comrades who went to the bow of the ship to measure the flow speed were not so relaxed, several people dragged a long water mound rope of several hundred meters, and worked hard in the bow, and the ship sailed with some fixed reaction flow, and it took more than two people to pull the rope so as not to get rid of it, this time because of the special sea area, it was necessary to put the rope into the water for more than 100 meters, and both of them were a little struggling, so they had to change shifts with three people in shifts, changing shifts every half an hour, which was really hard; The small orchard took the initiative to ask for help, and it took a shift to barely complete the work. But this data is crucial, whether there is an undercurrent on the seabed, or how fast it is, can only be measured by this primitive method for the Liza. Originally, the Liza was intended to be equipped with a log, but considering that this instrument was a bit of a problem to be installed on a medium-sized freighter, it was finally abandoned for cost reasons.

The second is to enable the basic nautical instrument magnetic compass, which is actually a large compass, since the advent of the gyrocompass, this means of determining the course has been used very little, but any ship does not dare not equip, after all, it is always the most stable and reliable pointing instrument, even if the gyrocompass fails, the magnetic compass will not fail, if you lose your direction in the vast sea, then it is very possible to never go back, so as a backup insurance instrument, it must be equipped anyway. Now to enter the hinterland of the Dragon Triangle, Captain Mo Quan decisively activated it, and he also wanted to know how serious the legendary magnetic declination phenomenon was. This work is entrusted to the careful and meticulous Kuangsuo, because the work itself is not difficult, it only needs to be recorded.

The third kind of instrument that is not commonly used is the low-light night vision device, which is an expensive night detection instrument, which is rarely used in ordinary times, and its principle is to use the weak light existing on the sea surface to magnify, and then through this instrument with the function of a telescope, the night observation of the sea surface is as if it were daytime; In addition to organizing their lookouts, Superintendent Zhang Jian'an took the only digital camera on board the ship and conscientiously took some photographs and evidence according to his own understanding, but this work did not begin until dawn.

The last treasure is the small machine placed next to the radar, Captain Mo Quan said that he didn't expect that the Lisha was actually equipped with such a unique instrument, which greatly reduced the risk of the voyage, everyone didn't understand what he meant at first, and when he turned on this small instrument, some small signs displayed on the screen made them laugh dumbly, this is actually a sonar display.

When it comes to sonar, they are still familiar with it, this is a professional tool that can detect underwater objects, to be honest, sailing on the ocean, the most worrying thing is whether there is anything dangerous underwater, this time with sonar, even some fish under the surface of the sea are clearly visible, they really realize how happy it is to see.

Other than that, the rest of the work was carried out as usual, and everyone did not have to worry as much as before, except for collecting some necessary data in an orderly manner.

So far, the overall sea conditions and the data collected appear to be normal.

Li Yiting sat in the cab, silently mastering the orderly development of all work, and rushing to the post that needed assistance at any time.

Sailing at sea was originally a man's business, so now only three ladies are the most leisurely.

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Arriving at the destination, the Lisha needed to sail for a whole night, so it was not until the next morning that they came to this sea area that is said to be very terrifying, all the navigation data still showed normal, the only thing that changed was that the magnetic declination angle was indeed larger, and now the course of the magnetic compass was compared with the gyrocompass, and the error was already more than 8 degrees, but this did not affect the normal navigation at all.

Chen Tianyu did not guess wrong, the storm had already died in this sea area, and with the brightness of the sky, in addition to the calm sea, what appeared in front of everyone was a strange scene that looked some far away.

With the exclamation of some people, everyone looked curiously, and under the clear blue sky, there were several small but thick clouds hanging in front of the bow of the ship, these clouds seemed to be very close to the sea, and when they glanced at the Lisha, they were almost attached to the sea; The most interesting thing is that there is a slender cloud column at the bottom of the whirlpool that is closely connected to the sea, and there are three such clouds, which look very close, but in fact they are still far away from the freighter.

Captain Mo Quan said that it was a seaspout, a unique sight after the storm.

Hearing the word tornado, everyone's hearts tightened for no reason at first, but Captain Mo Quan smiled slightly and explained: "This is a siphon phenomenon, when the storm passes, the clouds will disperse, forming several small clouds, these clouds are generally relatively low, and the vortex vacuum in the center will suck the sea water vertically into the sky...... If you look at the others, the clouds have risen like a Optimus Prime, which means that the storm has indeed dissipated and poses no threat to the sea area. ”

Everyone suddenly realized and was amazed by the wonder of nature.

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The busyness of the day is not on the table.

In the evening, Captain Mo Quan solemnly handed over a printed and bound data atlas to Chen Tianyu.

"These are some of the data we have measured after entering the sea area, and I have specially instructed them to compile them into a book, hoping to help you solve them. He was downcast.

Chen Tianyu hurriedly thanked him, this information was not easy to come by, and he should indeed thank Captain Mo Quan for his strong support.

Now is not the time to say kind words, he called Li Yiting and Kuangsuo to the conference room, several people can't wait to open this "suspected Dragon Delta hinterland navigation data compilation", in addition to some very professional sea area descriptions and terminology explanations, can only roughly grasp the following main data, these data are based on the center of the storm recorded by the Long Teng Xiangyue, select a square area with a length and width of about 50 nautical miles, and select points for surveying and mapping, which shows its professionalism, meticulousness and good intentions:

Measuring points (reference points): 42 degrees 42 minutes north latitude 2, east longitude 132 degrees 32 minutes 2

Positioning error: theoretical error± 20 meters

Time: 0615, July 19 (Astronomical Timekeeping)

Weather: Sunny with partly cloudy spells

Wave height: 1.0 m

Swell: None

Wind direction: 050 degrees

Wind speed: 9 m/s

Air pressure: 1010 hPa

Visibility: >5 nm

Heading: (True Heading) 030 degrees, (Luo Heading) 029 degrees, (Magnetic Heading) 020 degrees

Speed: 13 knots

Draft: 7.3 m

Water depth: measured > 5,000 meters, 8,356 meters on map

Flow velocity: (5 m depth): 1.2 knots, (30 m depth): 2.5 knots, (100 m depth): 3.5 knots

Flow direction: (5 m depth): 190 degrees, (30 m depth): 130 degrees, (100 m depth): 100 degrees

Underwater target: 1 medium school of fish

The rest of the situation: the seaspout is located at the azimuth of the ship at 335 degrees, and the distance is 43 nautical miles

……

Measuring point (001): 43°07:00 N, 132°57:55 E

Positioning error: theoretical error± 20 meters

Time: July 19, 0847 (Astronomical Timekeeping)

Weather: Sunny with partly cloudy spells

Wave height: 1.5 meters

Swell: None

Wind direction: 060 degrees

Wind speed: 8.8 m/s

Air pressure: 1015 hPa

Visibility: >5 nm

Heading: (True Heading) 045 degrees, (Luo Heading) 044 degrees, (Magnetic Heading) 035 degrees

Speed: 12.5 knots

Draft: 7.1 m

Water depth: measured > 5,000 meters, 7,133 meters on map

Flow velocity: (5 m depth): 1.5 knots, (30 m depth): 3.5 knots, (100 m depth): 4.5 knots

Flow direction: (5 m water depth): 185 degrees, (30 m water depth): 120 degrees, (100 m water depth): 095 degrees

Underwater target: 3 schools of medium-sized fish

The rest of the situation: the seaspout is located at an azimuth of 300 degrees and a distance of 26 nautical miles

……

Measuring point (006): 43°07 N, 132°07 E

Positioning error: theoretical error± 20 meters

Time: July 19, 1115 (Astronomical Timekeeping)

Weather: Sunny with partly cloudy spells

Wave height: 1.5 meters

Swell: Mild

Wind direction: 070 degrees

Wind speed: 6.5 m/s

Air pressure: 1008 hPa

Visibility: >5 nm

Heading: (True Heading) 270 degrees, (Luo Heading) 268.5 degrees, (Magnetic Heading) 261 degrees

Speed: 13.7 knots

Draft: 6.6 m

Water depth: 4,788 meters, 4,785 meters

Flow velocity: (5 m depth): 0.5 knots, (30 m depth): 1.5 knots, (100 m depth): 2.5 knots

Flow direction: (5 m water depth): 200 degrees, (30 m water depth): 210 degrees, (100 m water depth): 198 degrees

Underwater target: 7 small schools of fish

The rest of the situation: the seaspout is located at the azimuth of the ship at 357 degrees, and the distance is 28 nautical miles

……

Measuring point (011): 42°17:0 N, 132°07:3 E

Positioning error: theoretical error± 20 meters

Time: July 19, 1403 (Astronomical Timekeeping)

Weather: Sunny with partly cloudy spells

Wave height: 1.5 meters

Swell: Mild

Wind direction: 065 degrees

Wind speed: 6 m/s

Air pressure: 1007 hPa

Visibility: >5 nm

Heading: (True Heading) 180 degrees, (Luo Heading) 179.3 degrees, (Magnetic Heading) 172 degrees

Speed: 14.1 knots

Draft: 6.7 m

Water depth: 4432 meters, 4430 meters

Flow velocity: (5 m depth): 1.3 knots, (30 m depth): 3.0 knots, (100 m depth): 3.0 knots

Flow direction: (5 m depth): 210 degrees, (30 m water depth): 220 degrees, (100 m water depth): 215 degrees

Underwater target: 5 small schools of fish

Other conditions: The seaspout is located at an azimuth of 343 degrees and is at a distance of about 60 nautical miles

……

Measuring point (016): 42°17:2 N, 132°57:8 E

Positioning error: theoretical error± 20 meters

When: July 19, 1655 (Astronomical Timekeeping)

Weather: Sunny with partly cloudy spells

Wave height: 1.0 m

Swell: None

Wind direction: 066 degrees

Wind speed: 7 m/s

Air pressure: 1003 hPa

Visibility: >5 nm

Heading: (True Heading) 090 degrees, (Luo Heading) 088.7 degrees, (Magnetic Heading) 081 degrees

Speed: 12.8 knots

Draft: 6.8 m

Water depth: 5,000 meters > measured and 6,226 meters on map

Flow velocity: (5 m depth): 2.0 knots, (30 m depth): 3.5 knots, (100 m depth): 4.0 knots

Flow direction: (5 m depth): 195 degrees, (30 m depth): 187 degrees, (100 m depth): 189 degrees

Underwater target: 3 schools of medium-sized fish

The rest of the situation: the seaspout is located at an azimuth of 306 degrees and a distance of about 75 nautical miles

……

Measuring point (020): 42°42:8 N, 132°45:6 E

Positioning error: theoretical error± 20 meters

Time: July 19, 1810 (Astronomical Timekeeping)

Weather: Sunny with partly cloudy spells

Wave height: 1.0 m

Swell: None

Wind direction: 077 degrees

Wind speed: 8.6 m/s

Air pressure: 1009 hPa

Visibility: >5 nm

Heading: (True Heading) 330 degrees, (Luo Heading) 329.5 degrees, (Magnetic Heading) 319.8 degrees

Speed: 12.5 knots

Draft: 7.2 m

Water depth: 5,000 meters > measured and 8,167 meters on map

Flow velocity: (5 m depth): 2.0 knots, (30 m depth): 3.8 knots, (100 m depth): 4.5 knots

Flow direction: (5 m depth): 200 degrees, (30 m depth): 130 degrees, (100 m depth): 099 degrees

Underwater target: 6 medium-sized fish schools

The rest of the situation: the seaspout is located at an azimuth of 317 degrees and a distance of about 55 nautical miles

The data booklet contains data from a total of 21 survey sites, followed by dozens of clear digital images taken from all angles.

Seeing these professional data, the three of them were naturally a little dumbfounded, on the surface, these data didn't seem to be too abnormal, but Chen Tianyu still asked Kuang Shuo to keep these data obtained at great risk in mind, he knew that Beiting might not have a second chance to come here.

He thought that when Captain Mo Quan took a breath, he would have to be cheeky and go to consult again. [.]