Transmigrated as the Crown Prince

Upon hearing the news that they had reached the pole, loud cheers erupted in the submarine.

If it is wartime, unnecessary movement inside the submarine is strictly prohibited to avoid death. However, the location they are currently in is the North Pole, and no matter how big the noise is, no one will come to trouble them.

The first mate on the side suggested excitedly. "Captain, do we have to hold a ceremony? It's like the Equator Crossing Ceremony."

The Equator Crossing Ceremony is an ancient naval tradition that continues from the Age of Discovery. The earliest written records can be traced back to the 18th and 19th centuries. It is also called the "Equator Festival". When the ship crosses the equator, all sailors, except those on duty, have a day off, hold a banquet, and sacrifice whole pigs and sheep to the God of the Sea. Some captains also set up incense altars on the bridge to offer sacrifices, and the sailors drank and danced to pray to the sea god for blessings and safety.

Later, this custom also spread to the navy, but the original intention of the "Equator Crossing Ceremony" in the navy was to boost morale by setting up a "Fool's Day", or to ensure that new sailors can withstand the challenge through "pranks". Hard days at sea.

For example, when a U.S. warship passes the equator, old sailors will raise a "Jolly Roger" with a white skull on the warship and announce that the warship is taken over by Poseidon Neptune and his followers. The old sailors will put on pirate costumes to "tame" the new recruits. Starting in the morning, the new recruits will put on travel shoes, shorts and white clothes, queue up to enter the hangar, and wait for the veterans to clean up. After all the levels are passed, the crew member dressed as Poseidon will issue a Shellback certificate to each recruit.

It's just that they are traveling under the iceberg and it is impossible to get some air. The captain thought for a while and ordered. "Forget the ceremony, let's add a glass of dark beer to everyone at noon."

There was another burst of cheers in the boat.

After passing the pole and sailing for another seven days and seven nights, the sonar man reported loudly. "Captain, we have passed through the ice cap!"

"Come up!" the captain shouted loudly.

They sailed underwater for more than half a month, and they were almost going crazy.

Although the working/living environment on a nuclear submarine is superior to that of a conventional submarine, for example, the engine noise of a nuclear submarine is much smaller than that of a diesel engine. There is no pungent diesel smell in the air; the oxygen produced by electrolysis will produce a small amount of ozone, and the smell of ozone is like the smell of dust and weeds after rain, which is a bit pungent, but also very refreshing; plus The crew members can take regular showers to remove the odor of sweat from their bodies, and with the additional air purification system and ventilation system installed inside the submarine, the air inside the submarine is still good.

However, after being trapped in this iron jar day and night for more than half a month, many crew members still suffered from insomnia, loss of appetite, low blood pressure, waist and leg pain and many other conditions.

When submariners are on duty at sea, they usually sail for dozens of days, because it is impossible to distinguish between day and night in a fully enclosed submarine. Once the submarine enters the water, the sailor's life begins to be an 18-hour cycle, and these 18 hours are cut into three 6 hours are used for sleeping, duty and leisure respectively. Therefore, to become a crew member on a submarine, applicants must pass a series of cruel tests, psychological evaluations and high-intensity training, but these are not as good as after boarding the submarine. The hardness of life. Crew members not only need to have rich technical knowledge, but also need to have enough determination and perseverance to persist in completing several months of underwater life. It is basically impossible for ordinary people to work normally in such a difficult environment.

At the same time, the navies of various countries try their best to install entertainment facilities in the limited submarine space to reduce the pressure on soldiers. For example, new nuclear submarines in later generations even have various entertainment facilities such as small swimming pools, movie theaters, and fitness venues. Russian and US military submarines even have Sauna room for soldiers to rest and relax. Paint submarine cabins different colors to help crews overcome cabin fever.

At this time, German nuclear submarines were not generous enough to install swimming pools and cinemas, and could only arrange other entertainment facilities as much as possible. And if it weren't for crossing the North Pole, they wouldn't have stayed away from the surface for more than half a month.

Following the command to float, high-pressure air entered the ballast water tank. After emptying the seawater, the buoyancy was greater than gravity, and the submarine floated quickly underwater. Suddenly, the bow of the submarine jumped out of the sea like a dragon, and then fell heavily to the sea, splashing countless water splashes.

The nuclear submarine reveals its smooth appearance, especially its command tower, which is almost integrated with the submarine's body and looks quite beautiful. It is wider at the bottom and narrower at the top. The shape of the podium enclosure is very much like a streamlined car, which is also to reduce resistance.

A sailor stepped forward and unscrewed the hatch cover of the bridge. The remaining seawater poured down in the fierce sea wind, and the people around him shivered. Due to the operation of power and mechanical equipment, the interior of the submarine maintains a high temperature of more than 30 degrees all year round, just like the hot Sahara Desert.

"It's so cold!" Everyone hurriedly found coats to put on, climbed out of the bridge along the ladder and came to the deck. Although it is the arctic daylight period and the sun is shining, the cold wind still makes people feel biting. But smelling the fresh air, the sailors opened their mouths exaggeratedly and greedily breathed in the air that smelled slightly of the sea.

The navigator held the sextant very responsibly for azimuth calibration.

A sextant is an optical instrument that can measure the angle between two distant objects - most commonly the angle between a celestial body and the sea (horizon) horizon or between a celestial body and a celestial body. By measuring the angle and then finding the latitude of the point where the sun hits directly that day, you can determine the latitude of the observer. This has great implications for navigation. Since its introduction in the 18th century, the sextant has been an important positioning and navigation tool.

Their nuclear submarines use an inertial navigation system, and the core of this system is a gyroscope. The gyro is stable. By measuring the relative position, you can know the submarine's own acceleration. Then, you only need to integrate the acceleration once to get the speed. After integrating the acceleration twice, you can get the range. By comparing it with the position at the time of departure, you can proceed. Calculate the navigation parameters such as longitude, latitude, pitch and roll angle, speed, sailing distance and heading of the submarine.

This thing is not an advanced technology. As early as 1852, French physicist Foucault created the earliest Foucault gyroscope in order to verify the rotation of the earth, and officially proposed the term "gyroscope". In the early 20th century, German explorer Anschütz wanted to explore the North Pole by submarine. In 1904, he created the world's first nautical gyrocompass, which opened up the way for gyroscopic instruments to indicate the position of moving objects. At the same time, German scientist Schuler created the "Schuler Tuning Theory", which became the theoretical basis for gyrocompasses and navigation instruments.

Unfortunately, even later generations of advanced instruments such as fiber optic gyroscopes and laser gyroscopes will have errors, let alone the mechanical rotor gyroscopes at this time. As time goes by, errors will continue to accumulate, so every voyage After some time, perform proper calibration.

The navigator fiddled with the sextant in his hand for a while and reported to the captain. "Captain, our course has deviated, probably about 20 degrees from the original route."

The captain nodded disapprovingly, this was what they expected. Just as he was about to say something, a sailor on guard shouted. "Captain, that iceberg is drifting towards us!"

The captain looked in the direction pointed by the sailor, and sure enough he saw an iceberg floating slowly in the distance. The iceberg was as big as a truck, and anyone familiar with the sea conditions knew that only a small amount of the iceberg was exposed on the water. Partially, most of it is hidden under the water. The volume ratio of the iceberg above and below the water surface is about 1:9.

"Prepare to dive!"