173 swim past

The helicopter flew farther and farther away, gradually entering the white sea above the vast sea, at this time, looking out of the porthole of the helicopter, there was nothing outside, and everywhere in the eye was the sea and sky.

The helicopter flew forward for a while, and the instructor's voice suddenly sounded in the cabin: "All the trainees, get up, all get up, and prepare to rappel!" ”

Rappelling?

Li Yu was taken aback.

Now the helicopter hovered over the sea, abling ...... Wouldn't that just go down into the water?

These guys...... Didn't you want the cadets to swim to the Marine Academy on their own?

Li Yu looked up at the instructor in shock.

But the instructor didn't explain, he just walked from one end to the other, and woke everyone up with a loud voice, and if anyone was still with their eyes closed, he kicked it out, savage like a slave trader.

Li Yu lowered his head and looked at the other side.

Shikina was also dazed, and then shrugged her shoulders at him.

"All the students, get up and prepare to rappel!" The instructor held a loudspeaker and shouted: "After the rope is lowered, everyone swims all the way to the southeast, as long as you swim 20 kilometers to the Marine War Academy, repeat, keep swimming to the southeast, about 20 kilometers to the Marine War Academy, however, if you do not return to the Marine War Academy before 6 o'clock in the afternoon, then this training qualification will be cancelled!" Again, you must return to the academy before six o'clock, otherwise you will be disqualified from the training camp! ”

After listening carefully to the instructor's request, Li Yu couldn't help but curse MMP in his heart!

It's a vast white area here, who knows where the southeast direction is, how to swim?

Besides, they didn't say anything like swimming over before, they weren't prepared at all.

But scolding was useless, and in a few moments a group of people were driven off the helicopter by the instructors.

Naturally, Li Yu had to slide down the rope into the sea from the open hatch on the belly of the helicopter.

The sea was a bit cool, but bearable.

If you want to return to the Nava Marine Academy on time, the most important point is to find the right direction, but the question is that there is a white expanse here, where to find the direction, and what to use as a benchmark?

Not only Li Yu was confused, but the other students were also confused. Forced, especially many cadets who did not receive much training in Marine Corps combat, were even more at a loss.

Although this training is a Marine Corps combat training, but not all the trainees are professional Marines, some countries are forced by conditions, there are no professional Marines, but they want to understand the operations of the Marines, so they selected other members of the special forces to participate in the training, Nava did not screen the students, as long as they were sent, they will receive, of course, everything has to be arranged by them after receiving!

Li Yu was looking around blankly, and Shikina suddenly swam towards him.

"Hey, Lee, which way are you swimming?" Hikina asked.

"I don't know." Li Yu shrugged.

He actually knew, but he wasn't in a hurry to show it, he wanted to see the details of Hikkina.

But it was clear that Hikina had the same thoughts as him, and now, everyone was tempting.

At this time, someone shouted: "This way, we should swim this way, hey, a few people, come this way, I remember which way we flew from, so I know which way we should go!" ”

When many of the team members heard this, they hurriedly swam towards the person.

"In the past?" Shikina looked at Li Yu.

But Li Yu was unmoved.

He actually didn't know if the direction that the student said was right, but he felt that the student was very likely to be wrong, because he had a vague feeling that when the helicopter came, it didn't fly in a straight line, but turned a corner, and maybe even went around in circles.

The other one, if he remembered correctly, he remembered that although he had his eyes closed before, he felt that the helicopter had rolled slightly many times, and once the fuselage was rolled, his body would definitely feel it, he was a Wolverine after all.

So he wasn't moved by the student's words.

Besides, he felt that no matter what happened, it was better to rely on himself.

Regarding military topography, he has not yet undergone professional training and study, but some basic things, some very useful skills, Captain Long Yan has taught him, and he has read some books before, in addition, before coming here, that is, in the two days when he rested in the Kingdom of Balai, he also read some foreign books about the Marine Corps, so he still knows some theoretical things.

The number one priority at the moment is to determine the direction.

The easiest way, of course, is to use a compass, but alas, they have nothing, so they can only resort to the most primitive means.

The best solution is to look at the sun during the day and the stars at night.

Of course, there is a premise for this, the weather must be good.

Today's weather is good.

There are many ways to determine the direction by the sun, and there are three commonly used methods, one is the shadow method, the other is the watch method, and the other is the ground feature method - this method can be used on rainy days under certain conditions.

The shadow method uses a straight branch to be inserted vertically into the ground, the top position of the shadow of the branch is A, and after 10 minutes, the top position of the shadow is B, and the direction of A → B is the direction of west → east. In the Northern Hemisphere, the line perpendicular to AB and towards the Sun is south.

In the watch method, the watch is placed horizontally, the hour hand indicates the time (24-hour format) halved to the sun, and the 12 o'clock scale on the dial indicates the direction of the approximate north.

If the time is 16 o'clock, the scale at 8 o'clock points to the sun, and the scale at 12 points to the north. To sum up, the number of hours is half a pair of suns, and 12 refers to the north.

In the cleature method, the southern side of the independent tree is lush with foliage and smooth bark. The ring lines on the stump are usually sparse in the south and dense in the north. Snow from buildings, mounds, ridges, and highlands usually melts quickly in the south and slowly in the north. Large rocks, mounds, and trees are densely planted in the south, while moss grows in the north.

At this time, Li Yu and they are located in the sea, and the more suitable ones are the shadow method and the watch method.

The shadow method is the simplest, find a floating branch on the sea, hold it vertically in the water, write down the position of the shadow at this time, wait for about ten minutes, and then observe the position of the shadow to find out the direction in which the shadow is moving.

Through judgment, Li Yu found the direction at this time.

In fact, the watch method is simpler, except that their watches are all put away and there is nothing on them.

After judging the direction, Li Yu pointed to the southeast and asked Hikina: "I want to swim this way, what about you?" ”

"I'll follow you." Hikina said with a smile.

She certainly knew which way to go, but she didn't say.

The sea water soaked her clothes and made her sex. The body is more sultry, which is her biggest advantage at present!

If you can't go into battle yourself, then don't go into battle yourself, this is her consistent principle!

。 The whole book m.