Chapter 2 Turning Point (2,6000
"According to the plan, what is our army's next plan?"
"Build an artificial dock to allow a large number of trucks and heavy equipment and materials to land. The engineers also need to repair two emergency airports at night to ensure that they can get support from land-based aviation tomorrow..." After confirming that they would launch the seal plan, Marshal Rommel's old partner Gauss continued to return to him from the Central Asian Basin as Chief of Staff Scherner took over for a few months and was fully familiar with the situation of the various troops and could command freely. Gauss, who had landing experience, was sent to a more important place to cooperate in combat and formulate a plan. It is a rare arrangement for a chief of staff to be promoted from Lieutenant General to General.
People familiar with the matter said that this was an order issued by the head of state himself, and he was very optimistic about the chief of staff. The imaginary enemy staff commanded by Paulus put forward many targeted anti-landing opinions, and even Chief of General Staff Zeitzler also participated in the war game deduction with great interest. He commanded the Battle of Dieppe and fought the anti-landing successfully. All relevant experiences and response methods were absorbed. The progress of the war also proved that the Icelandic defenders basically did not take any counterattack measures that exceeded the German expectations, and were even far inferior to expectations in many aspects: for example, Lieutenant General Belarus scolded the Americans, but everyone knows how many landmines were buried in Azores and how many fortifications were built.
The only unexpected thing is that the US Army Air Force is quite determined and dares to conduct long-distance bombing without escort. Now it seems that it is the end of its strength.
"This step is not necessary, right?" Lieutenant General Belarus said, "We have landed in many troops and have initially controlled the port of Reykjavik, and can transport materials through normal channels..."
"I have two considerations: First, the enemy must also know that we will transport a large amount of transport through the docks. If centralized bombing can easily cause irreversible damage, it will seriously hinder the development of landed troops; Second, this is a rare opportunity for practical exercise. Although we have built an artificial dock in the Mediterranean, it is only an exercise after all, and it is still necessary to build it in front of the enemy in the North Atlantic. I think the commander should not mind that we lose some supplies or equipment."
Lieutenant General Belarus was persuaded and immediately reported the news to Mashar, who nodded in agreement and suggested building overnight.
The Japanese representatives who served as observers on the ships widened their eyes and observed the latest German technology. Today, many people have praised the Siber landing craft, believing that although Japan took the lead in developing a "flat-headed and pointed-tailed" landing craft, the square boat was poked forward with a bow, and the sharp stern was dragged behind to maintain the balance of the hull, and it could directly grab the beach. The straight bow of the boat was a baffle. After grabbing the beach, it could be put down as a springboard for personnel and equipment to get off the boat. The Japanese army would not even wet their shoes when they rushed ashore.
However, the Japanese landing craft is too small and can only deal with defenders with insufficient defense. Once the defenders have strong firepower, the power of this landing craft is too weak. Moreover, the problem of poor seaworthiness of small landing craft is exposed very clearly. You can only drag it with a large ship and release it when you are close to the landing point. Large landing crafts like the German army that can directly move from France to Iceland is extremely ideal.
In addition, the Japanese Marine Corps originally had few tanks and were very light, and developed special internal fireboats. However, in the face of the powerful anti-landing firepower and anti-armor capabilities of Britain and the United States, the survival of the internal fireboats is worrying. Now the Japanese Navy has enough tanks and urgently needs a large enough landing craft. The landing craft that can carry tanks must be able to carry armored vehicles. They are not only envious of the grenadiers who go to fight on the ashore by directly taking armored vehicles. They are all experts, and they can understand at a glance that the benefits of taking armored vehicles can not only carry heavy equipment and supplies, but also will not waste a lot of physical strength in the beach grabbing. There are also machine guns or even no recoils to provide firepower, which is of great benefit to beachhead fire suppression and deep pursuit operations!
The regiment commander Ito solemnly recorded that the naval landing war would introduce large landing crafts and the Marines would be equipped with more armored vehicles.
All the previous ones are understandable. The construction of artificial docks completely surpassed their cognitive abilities, so they focused on the ship's side holding a telescope and looking down with their heads.
Although the German navy is not strong, its engineering construction capabilities are the best in Europe. After receiving the requirements for the construction of artificial docks, experts from all walks of life have really put a lot of brains into consideration. In this regard, Hoffmann also used his time-travel advantages to improve his points.
In history, the artificial docks built by Britain and the United States in the Normandy Landing Campaign mainly used concrete caissons. This caisson was magnificent, with a large scale of more than 100 tons and a large one of more than 6,000 tons. It fell on the seabed at a depth of 5-6 meters on average. Then it was connected one by one in a manner similar to building blocks, and finally built a complete breakwater and dock embankment. Britain and the United States used millions of tons of concrete, steel, sea sand and other materials to build two artificial ports. They first used tugboats to drag across the English Channel, and then built them in turn, extending for several thousand meters. Each port can provide up to 6,000 tons of materials to the army every day.
Germany does not need such a large transportation capacity. Germany only needs to guarantee an army of 20,000 to 30,000 tonnes of supplies every day. Moreover, Iceland is too far from the European continent. If you use a tugboat to drag such a huge caisson, no matter what the sea risks are, the battle will end when it arrives. Therefore, the first requirement for building an artificial dock is to be autonomous and movable and not too slow.
Hoffman's initial idea was to imitate the later marine oil drilling platform to provide dock construction. The idea shines for engineering experts, thinking it is a genius idea, but there was no precedent before, and it had to be developed from scratch, ranging from 1 to 2 years to 2 years, and from a long time to several years. In the future, it may be a good equipment for developing offshore oil, but now experts are preparing to use other methods.
Compared with the hard construction of Britain and the United States, the path chosen by Germany seems very interesting. Without the troublesome and difficult to control caissons, Germany directly boarded a camouflage aircraft carrier (or transport aircraft carrier) developed based on Stillman-class tankers.
Stillmann was a large oil tanker built by Germany before the war, which could accommodate about 23,000 tons of oil. Germany originally built not many, but after obtaining Middle Eastern oil, this kind of civilian oil tanker using diesel engines gained a broad space for development. After the design drawing of the Will wheel was passed, Germany designed a 25,000-ton European standard tanker Bremen-level based on Stillmann's technical parameters, with an overall length of more than 185 meters.
The United States once used large-scale rapid tankers to build several large escort aircraft carriers, but the maximum speed of the Bremen class was only 14 knots. It took a lot of effort to change it to an escort aircraft carrier. Germany was unwilling to spend this cost and only carried out the simplest transformation: using the flat main deck of large tankers to directly steer the airplane at a height of more than 6 meters, or the overhead deck was exactly the same as the routine of transforming coal ships in the early days. The width and length of the decks exceeded the hull (width over 2 meters and length over 10 meters). The entire tanker seemed to be wearing a huge hat, and was also nicknamed a hated tanker.
It looks a bit ugly, but some of the characteristics of the hooded tanker made Hoffman applaud him.
The deck topped on the upper part of the capped tanker is made of steel plates with a thickness of 50mm, which can prevent horizontal attacks of 1,000 pounds of high-explosive bombs (but cannot stop armor-piercing bombs or dive attack aircraft). It adds nearly 4,000 tons to the tanker in one breath, resulting in a large draft and an increase in the center of gravity of the ship. Therefore, the engineers reduced the fuel transportation volume of the cargo warehouse by 5,000 tons, but the transportation space was still kept inside the ship.
Under the attention of everyone, the two capped tankers marked b1b2 slowly drove towards the vertical shore, and the aircraft carrier b1 was first stranded.
"B1 is successfully stranded, water injection!" With the captain's order, the sea valve opened, and a large amount of sea water poured into various water-tight warehouses. Then the tanker slowly sank at a speed visible to the naked eye. In the end, most of the hull was immersed in mud and sand, but in this way, the hull also remained stable. Now, in addition to nearly 20,000 tons of fuel, the entire ship also introduced tens of thousands of tons of sea water, and the territory seemed very solid.
After b2 queued up after b1, it also began to move forward in the way of head-to-tail connection. This is a very critical step. The docking size of the two tankers is required to be within 2 meters on the left and right, and within 30 cm on the upper and lower levels.
The left and right are difficult to control, but the actual deviation of the long seam is only more than 1 meter, so the upper and lower seams are relatively well controlled. As long as the water is constantly injected, the ship can achieve this goal by sinking at a constant speed. In the end, the height difference between the seams is only more than 10 cm. Since b2 is deeper in the sea, it is reflected in the ship that b2 has a deeper draft. b1 has not gone to 70% of the hull, and b2 is nearly 75%.
At this time, most of the steps have been completed, and the last step is still short of leveling. Because the ocean has slopes, the shallower the higher the beach, the two stranded capped tankers have a stern height lower than the bow height, and the li-volley deck above tilted towards the sea. But this is not a problem for the German engineers, because the steel plates laid on it are not a whole, but are laid from more than 1,000 steel plates of the same specification. The engineer immediately calculated the size that needs to be adjusted when changing the flattening. The sea level height of the last steel plate is as the standard height. The pillars connected under each steel plate begin to fall. The effect of the sea slope is reduced by using the method of shortening the pillars to relieve the influence of the sea slope, and finally form a roughly balanced platform.
At dawn, a platform connecting the beach, nearly 400 meters long and 30 meters wide appeared out of thin air on the sea, and everyone cheered. The Japanese Observation Group was stunned. Can you still play like this?
Now, as long as the freighter approaches and builds a steel bridge on this steel platform, they can start to transport materials. The entire platform can bear the material accumulation capacity of about 5,000 tons at the same time.
More importantly, this steel platform has a special function: a 400-meter-long platform can provide runways for emergency landing fighters. If the platform is expanded to 600 or even 800 meters, even attack aircraft can take off and land urgently.
Chapter completed!