When submarines are sailing underwater, they mainly rely on sonar to search for the surrounding situations, and when they float, they can rely on radars. Moreover, the current nuclear-powered submarines have huge displacement and sufficient space, so radars have been deployed above the command tower. Now, after they float, the radar has also started working to search the surrounding sea and air.

For submarines, the most feared thing is the enemy's surface ships and anti-submarine aircraft. Now with search radar, various situations can be discovered as early as possible.

Both radar and sonar were working, searching the surrounding sea surface, and the submarine began to continue sailing south.

Two hours later, the sky gradually turned white. In the Arctic Circle, this season is the time of polar day. If it is at the North Pole, it will always be bright. As time goes by, the polar day continues to move outside. When the summer solstice reaches, the polar day will move to the Arctic Circle, which is the largest range that can be expanded.

At this time, the Arctic Circle is not yet 24 hours a day, but the night is already very short.

The sun shines obliquely on the Arctic Circle. Facing the rising sun, you can see so many floating ice floating on the sea water of the Arctic Ocean, and the submarines are sailing between the floating ice.

When constructing this submarine, it fully considered the robustness of the shell. It uses the latest high-strength steel developed by Krupp, which can easily dive to the seabed at a depth of 300 meters, and also takes into account the Arctic environment.

When needed, it can directly break through the ice layer of the Arctic Ocean and float up, so there is no need to be afraid of these floating ices even if they hit.

"Heard the noise of the low-speed propeller." At this moment, the sonar soldier first discovered the target.

The floating ice continuously restricts the signal search of the air-to-sea search radar. After the sonar pointed out the direction, the radar finally captured several vague reflection highlights.

"Note, dive to the depth of the periscope and prepare for battle!"

In this area, the ships of Soviet Union or Americans sailed, and the goal of our side this time was to launch a sneak attack on American merchant ships!

The 6,000-ton nuclear submarine formed a huge vortex on the sea surface, like a big shark, dived into the sea water, leaving only a small periscope on the sea surface.

Standing in front of the periscope of the command tower, Otto was constantly observing the sea surface. At the same time, his submarine was also sailing forward at a speed of 10 knots.

Due to the use of seven-blade propellers and the first generation of sound silence tiles developed by Germany were laid on the surface, the submarine's silent performance is quite good. When sailing at a speed of 10 knots, it will not be discovered by American sonar equipment at all.

After passing through the heavy ice floes, Otto finally used his periscope to see the target on the distant sea surface. Suddenly, he felt that his breathing was about to become rapid.

Aircraft carrier?

The layout of the straight deck and the bridge on the side must be an aircraft carrier. Unexpectedly, I caught such a big guy on my first trip!

This is a fleet with more than a dozen cargo ships sailing on the sea. The aircraft carrier was the first thing Otto noticed, and after he continued to get closer, he could see it more clearly.

It is indeed an aircraft carrier, but it is not an attack aircraft carrier with a displacement of tens of thousands of tons. This should be an escort aircraft carrier. However, it is not one, there are three escort aircraft carriers that are sailing with other cargo ships.

Otto knew some inside information about this.

Germany ordered a batch of container cargo ships from the Newport News Shipyard in the United States. After Germany received them, it was transformed into an aircraft carrier, or it could be used as an aircraft carrier without any modification.

Later, with the evil relationship with the United States, the Americans suddenly discovered during the Pacific War that they needed a low-priced and reliable escort aircraft carrier. At this time, they found the Newport News Shipyard. After inspection, Nimitz and Roosevelt made the decision. The Navy placed dozens of orders to allow such ships to be mass-produced.

This is the American Casablanca-class aircraft carrier.

Before this, even light aircraft carriers were converted from combat ships. However, the escort aircraft carrier was modified from merchant ships. Therefore, although it is an aircraft carrier with a displacement of tens of thousands of tons, it cannot participate in front-line combat at all. It has no armor protection and advanced damage control. It looks like an aircraft carrier, but it will be scrapped as long as it is hit.

Therefore, this type of aircraft carrier is mainly used to escort merchant ships. They generally deploy in front of the transport fleet, use carrier-based aircraft to reconnaise, attack submarines, or guide surface ships to attack. In addition to escorting aircraft carriers, they often play the role of transport ships.

Now, these three escort aircraft carriers, like other cargo ships, are responsible for transportation tasks.

Manila Bay, the sixth Casablanca-class aircraft carrier.

The steam engine at the tail is rumbling, and in the Arctic Ocean, the harsh weather conditions make everyone be careful.

On the bridge, Colonel Ralph Davidson stood here and looked into the distance with a telescope.

Floating ice is constantly floating across the sea. They should try to avoid large pieces of floating ice to avoid collisions.

Fortunately, it is almost twenty hours in the day now, which can keep them sailing almost all the time during the day. However, such a sail makes people even more exhausted.

"We are the navy and are going to fight, but now we have become sea jeeps." At this time, at another location on the bridge, Mitchell, the first mate, looked at the dense P-39 fighter jets on the deck and couldn't help but complain.

Now, the biggest enemy of the US Navy is the island navy. The island navy is raging in the Pacific Ocean, and even the US Navy avoids its edge. Every naval officer is eager to fight, but he does not come to serve as a transport ship to transport weapons and ammunition to the Soviets!

After the Germans controlled the North Sea, the United States even had to venture to open up the Arctic Ocean route, set out from Alaska, and transported all the way along the northern coastal border of the Soviet Union to the White Sea, unloading supplies at the closest place to Moscow.

This role change has made many people uncomfortable.

Hearing this, Ralph turned his head and said, "It is our inevitable choice to help the Soviet Union now. We must let the Soviet Union hold on and hold the Germans. If the Soviet Union fails, we will face the dangerous situation of fighting on both sides. Think about it, we can't even deal with the island countries now. If we deal with the German navy on the Atlantic, we will definitely lose."

It takes time for naval tyranny soldiers. The United States must help the Soviet Union hold back Germany. This concept has now been deeply rooted in people's hearts.
Chapter completed!