It was not Mu Haoyang who submitted this report, but Zhou Yusheng.

Although Mu Haoyang also serves as the commander of the Navy, his main identity is the Chief of Staff, so the Navy's equipment planning reports were submitted by Zhang Yuting, Zhou Yusheng and Yan Yingbo and other soldiers, and then submitted to the Ministry of National Defense and the State Council after deliberation.

At that time, Mu Haoyang was the biggest supporter of all-electric submarines.[bsp;   This does not mean that Mu Haoyang attaches great importance to the efficiency and cost ratio of submarines, but according to his plan, the future Chinese naval fleet will be a "electric fleet". Various large warships have comprehensive power systems. Electricity is not only driving energy, but also the main energy of various weapon systems. In this way, all-electric submarines can minimize the navy's logistics support and can cooperate with fleet operations more effectively.

For example, when fighting with the fleet, all-electric submarines can easily replenish power from other warships, such as aircraft carriers, large integrated warships, anti-submarine warships, etc., and basically do not need to consider the problems caused by charging.

Of course, the biggest advantage of an all-electric submarine is its cost.

In addition, there is another reason why Mu Haoyang will not ignore, that is, all-electric submarines are easier to build, and some smaller inland shipyards have sufficient strength and do not need to occupy the ship platforms of large shipyards in coastal areas, so they can quickly increase production during war periods.

You know, in the world war, submarines are definitely "consumables".

In this way, there is no suspense to vigorously develop all-electric submarines.

At the end of 2045, after passing the approval of the Ministry of National Defense and the State Council, Mu Haoyang approved the construction of the "Stingray" class. Because all submarines of this class are named after freshwater fish, they are also called "Freshwater fish". Judging from this naming method, it also proves that the attention paid by all-electric submarines in 2045 was not high enough, and they were only regarded as a cheap substitute.

Of course, the "stingray" level itself also has many problems.

The submarine has an underwater displacement of only 2,200 tons and is equipped with a first-generation fuel cell of 300 tons. It has a maximum submarine endurance of only 6,500 kilometers and a maximum submarine speed of 35 knots. It is equipped with four 533 mm and two 650 mm torpedo tubes, and is equipped with eighteen mines or twenty-four mines. The two batches originally built all use the first-generation fuel cells and are replaced with the second-generation fuel cells from the third batch. The first two batches are also replaced with the second-generation fuel cells when mid-term improvements are made.

The biggest advantage of the "stingray" level is its cost.

Including design and development funds, the cost of the first eight ships was only equivalent to two Type 099 attack nuclear submarines, the cost of the second batch was 30% lower than the first batch, and by the third batch, it was even lowered by about half. In other words, after the design and development funds were excluded, the cost of the "stingray" class was only equivalent to one-eighth of the type 099.

Of course, some people may think that more submarines require more officers and soldiers, and more support facilities are needed, and maintenance costs are higher. The actual situation is not the case. The "Stingray" class has only twenty-two personnel, of which six officers are only one-sixth of the attack nuclear submarine, and there is no problem of maintaining and supporting nuclear reactors, so the maintenance cost is only one-tenth of the attack nuclear submarine. In other words, in terms of comprehensive costs, the advantages of the "Stingray" class are more prominent, less than one-eighth of the attack nuclear submarine.

The result was that before the outbreak of World War III, the Chinese Navy had ordered forty-eight of this type of submarine in five batches. Before the outbreak of the war, the Chinese Navy equipped 32 ships, and in addition to the eight under construction, the other eight were provided to the allies in the form of assistance. In addition, more than 30 ships including Pakistan and Egypt ordered more than 20 ships, and several friendly countries ordered more than 20 ships. The final production of the "Stingray" class exceeded 100, and most of the first and second batches were modernized and modified, and the second generation and even third generation fuel cells were installed, and some even served for more than 40 years.

Judging from the number of constructions, the "Stingray" class is a very successful submarine.

Of course, this does not mean that there is no problem with the "stingray" level.

The biggest problem is that the displacement is too small, resulting in very limited room for improvement and the continuous combat capability is far from meeting the requirements of the Navy.

To put it bluntly, the "stingray" class is only suitable for offshore activities and does not have the ability to fight independently in the depths of the ocean.

Judging from its submarine ability, it can only patrol for two days 2,500 kilometers away from the base. Even if it is replaced with a second-generation fuel cell, it cannot exceed ten days. The patrol time of attacking nuclear submarines on the battlefield is more than one month, and some can even reach two months.

In addition to battery life, too low ammunition reserve is also a serious problem.

In later wars, this problem was very prominent. For example, in several ambush battles, the "Stingray" class had to watch the enemy's ships slip away because they had exhausted the torpedoes. It was also true that during the war, the "Stingray" class often moved in a cluster, forming a hunting team of four to six submarines to attack the enemy's fleet and fleet together.

For small and medium-sized countries, these problems are still tolerant.

For the Chinese Navy, the performance defects of "stingray" cannot tolerate it.

In fact, this is also the main reason why the Chinese Navy provided the "Stingray"-class aid to the allies that had only been in service for a few years after the second all-electric submarine was put into production.

The second all-electric submarine is the "Tuna" class that was officially started in 2048. Because all submarines of this class are named after saltwater fish, they are also called the "Salty Water Fish" class. The first boat is the "Tuna". The "Tuna" that previously acted as an experimental submarine was retired in 2049 and was then handed over to the Naval Museum, becoming a witness to the development history of China's submarines.

Compared with the "stingray" level, the biggest feature of the "tuna" level is that the displacement has increased by 60%.

The first batch of "tuna"-class underwater displacement was 3,550 tons, equipped with 500 tons of second-generation fuel cells, with a maximum submersible endurance of up to 16,000 kilometers and a maximum submersible speed of 45 knots; there were two 533 mm and four 650 mm torpedo tubes, with twenty-eight mines, or forty-four mines. The second batch of underwater displacement increased to 3,780 tons, mainly by adding vertical missile launch chambers;

The underwater discharge volume of the three batches further increased to 3,940 tons, the fuel cell preparation volume also increased to 600 tons, and the permanent magnet motor with a maximum power of 9,500 kilowatts was replaced, and the maximum submersible speed was increased to 47 knots. Starting from the fourth batch, the third-generation fuel cell and permanent magnet motor with a maximum power of 12,000 kilowatts were fully replaced, with the maximum submersible distance of 28,000 kilometers and the maximum submersible speed exceeded 50 knots.

If the "Stingray" class has opened the era of all-electric submarines, then the "Tuna" class has pushed the all-electric submarines to a new level. Especially since the fourth batch, the "Tuna" class has surpassed the attack nuclear submarines in all aspects and became the real underwater overlord.

What is commendable is that the cost of "tuna"-grade is still very low.

Only the first two batches were affected by fuel cells, and the cost per unit displacement was slightly higher than that of the "stingray" class, and it was a little lower than that of the "stingray" class since the third batch. Because the construction scale is extremely huge, the scale cost effect of the "tuna" class is more prominent.

By the end of World War III, a total of 278 ships were built in the "tuna" class.

It can be said that if China insists on developing attack nuclear submarines, it will definitely not be able to build so many submarines during the war, and it will not be able to gain an overwhelming advantage on the underwater battlefield.

Of course, the "tuna" class has also been improved during the construction process.

The most important improvement is to enhance its continuous combat capability. In addition to increasing the allocation of fuel cells and adopting more advanced fuel cells, the main method is to increase the carrying capacity of weapons by increasing the displacement and increasing the special weapon cabin section. For example, starting from the seventh batch, the "Tuna" class added a weapon cabin about six meters long, increasing the torpedo reserve to 54. In the ninth batch, the torpedo launch device was also improved, the 533 mm torpedo launch tube was abolished, and all six 650 mm torpedo launch tubes were set on the ribs. A large spherical active sonar array was installed at the bow of the boat.

Of course, when it was improved, the displacement of the "tuna" class also soared a lot. By the seventh batch, the underwater displacement had reached 4,300 tons, and the ninth batch had reached 4,450 tons. As the displacement increased, the propulsion system of the submarines was also improved accordingly. The result was that many "tuna" class built in the early stage could not be improved at all. During the war, the Chinese Navy would not spend much effort to improve existing submarines, because this was no more trouble than building a brand new submarine.

Strictly speaking, after so many improvements, the "Tuna" class is no longer a submarine.

Later, many people divided the "tuna" level into four levels according to weapon configuration.

The emergence of the "tuna" class completely changed the appearance of the submarine, but the attack nuclear submarine was not eliminated because of this, but the Zhenfeng County team entered a new era.

The ability of attack nuclear submarines to remain is due to two key technologies: one is the miniaturization of a controllable fusion reactor, and the other is the magnetofluid propulsion technology.

These two technologies not only gave the attack nuclear submarine a second spring, but also made the attack nuclear submarine irreplaceable.

To put it bluntly, all-electric submarines that are easy to build are "consumables", while attack nuclear submarines with advanced performance and strong combat power are "luxury goods".
Chapter completed!