Embellishing the already splendid—Yinshan-class battleship

At that time, major shipyards proposed their own improvement plans. After all, being the primary contractor for the imperial navy's main battleship would ensure sufficient profits.

The performance of the Qinling class has greatly satisfied the Imperial Navy, yet certain flaws still render this class of battleships somewhat lacking

It is evident that the technical specifications of the Yinshan level and the Qinling level are quite similar, if not entirely identical

Because by the time it was completed, the Imperial Navy's expeditionary fleet had already set sail for the North Atlantic, the three Yinshan-class ships did not participate in the battles in the Atlantic

Due to the late service time of the Kuyu Island-class battleships and the prolonged training period, the Yinshan-class battleships took on the role of the main force in the Pacific theater. Consequently, the "Yinshan" was sunk during the "Battle of the Java Sea." The other two ships were retained and continued to serve until the Second World War.

Additionally, with the emergence of the 44-year model fuel boiler, a more powerful and compact power system has provided significant assistance for the improved design at Jiangnan Shipyard

At that time, the primary focus of Jiangnan Shipyard was on underwater protection and the compartmentalization of the hull

Indeed, many performance aspects, particularly those related to survival design, cannot be reflected in technical specifications

The first ship was named "Yinshan," thus these three battleships are also referred to as the Yinshan class

After much deliberation, the Imperial Navy ultimately chose the plan to enhance protection

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The participants in World War II were: Bayan Har Mountain and Himalaya Mountain

In the year 546 of the Ming calendar (1914 AD), the Imperial Navy decided to construct five Qinling-class Type B battleships, and subsequently placed orders with Jiangnan Shipyard, Dalian Shipyard, and Guangzhou Shipyard. However, when preparing to order two additional ships, the updated battleship design had already been completed, resulting in the Imperial Navy ultimately ordering only three of this class of battleships

In the year 547 of the Ming calendar (1915 AD), when the "Yinshan" was launched

In this situation, the Imperial Navy has decided to continue ordering the Qinling-class battleships, but modifications will be made to certain details.

Moreover, the development progress of the "Island" series battleships, which the imperial navy was focusing on at that time, was significantly slower than expected. Therefore, as the construction of the five Qinling-class battleships was nearing completion, the five major shipyards faced the awkward situation of having nothing to do, while the intense naval arms race and the * map * book did not come to a halt

Additionally, compartmentalization design is also a key factor in enhancing survivability, and this is precisely a significant flaw of the Qinling class

Standard displacement: 20,500 tons, full load displacement: 24,300 tons; overall length: 167 meters, beam: 27.5 meters, draft: 8.1 meters; capacity: 890 persons

Main armor belt: 230 - 320 mm, deck: 55 + 85 mm, turret: 120 - 330 mm, gun mount: 320 mm, command tower: 120 - 330 mm

In this way, the engineers at Jiangnan Shipyard are even able to complete all the improvement design work without increasing the displacement of the warships or making large-scale changes to the geometric dimensions of the vessels

After careful consideration, the Imperial Navy ultimately adopted the proposal from Jiangnan Shipyard. The hull design will be revised to maximize the battleship's survivability

Among the various improvement proposals, some aim to enhance firepower by increasing the ship's length to accommodate a fifth turret. Others focus on improving the design of the superstructure to lower the center of gravity, allowing for the installation of turreted secondary guns. There are also proposals to further enhance protection by expanding the "deflection zone" against 14-inch armor-piercing shells, thereby increasing survivability. Additionally, there are plans to increase the power equipment to boost output, raising the speed to 26 knots, thus developing a "super battlecruiser" scheme

This aspect is precisely what the imperial navy values the most. This is because it not only reduces costs but also shortens the design time, allowing for the prompt commencement of construction

For instance, the box-type anti-torpedo underwater protection belt design adopted by the Yinshan class was not present in the Qinling class. Additionally, the hull of the Yinshan class was entirely designed according to the new compartmentalization standards, and its survivability and storage capacity significantly exceed that of the Qinling class

Boilers: 8 units of 1944 model oil-fired boilers, Main engines: 4 units of 1944 model steam turbines, Power: 29,500 shaft horsepower, Propulsion: 4 shafts with 4 propellers, Speed: 21 knots, Endurance: 8,500 nautical miles at 10 knots

Main guns: 8 units of the 41-year type 350 mm L40 naval guns (later replaced with the 45-year type L50 naval guns alongside the Qinling class), secondary guns: 16 units of the 43-year type 150 mm L50 naval guns, quick-firing guns: 12 units of the 43-year type 100 mm L47 naval guns

For example, the underwater protection capability of the Qinling class was initially only required to withstand 150 kilograms of TNT explosives. However, with advancements in torpedo technology, torpedoes have become larger and more heavily armed, making this protection standard quickly appear outdated

Certainly, it is not about comprehensively enhancing protection, but rather about improving the protective deficiencies specific to the Qinling level.