Taimir-class submarine

The Taimir-class submarine is a submarine developed by Zhenian firm Li-Jien Maritime Systems in cooperation with Jinmu Heavy Industries. After the Stingray-class, it is the second diesel-electric submarine within the Republic of Zhenia Navy to utilize to extend its endurance and thus increase its capabilities, as well as the first diesel-electric submarine to utilize X-shaped single combination diving planes and rudders. It is built in two main variants according to size - the TS1800 and the TS3000, each getting its name from its submerged displacement tonnage.

The Republic of Zhenia Navy is the primary operator of the Taimir-class, having replaced a majority of its existing Stingray-class submarines and acquiring both the TS1800 and TS3000 variants. It has also been exported internationally, with the most notable operator being the Kapuku National Navy, which operates 9 TS1800 and 6 TS3000 submarines as of 1610 AC.

TS1800
The TS1800 is the first subclass of the type that was introduced in 1595 AC, with a submerged tonnage of around 1,800 tons. Unlike the TS3000, it does not include vertical launch system (VLS) cells, almost all of its weapons being launched from its six 533 mm torpedo launchers.

TS3000
Introduced to the public in 1595 AC and into Zhenian service in 1599 AC, the TS3000 is an expansion of the TS1800 design, implementing several changes from the TS1800; its name comes from its submerged tonnage of around 3,000 tons. The most notable of such changes is the implementation of ten (VLS) cells into the hull, which both expanded the ship's armament capacity and freed up more space for submarine-launched torpedoes in the frontal hull. The VLS cells are expected to carry a combination of submarine-launched cruise missiles and anti-ship missiles, directly increasing the ship's surface strike capabilities. There have been repeated speculations that the VLS cells would eventually be armed with short-range (SLBM): the speculation was confirmed to be true on August 18, 1603, when the first-ever sea trials of the Leichang-2S short-range submarine-launched ballistic missiles from the class occurred.

Another notable difference from the TS1800 include the implementation of batteries, particularly in the later ships of the subclass. The implementation of lithium-ion batteries have resulted in the near-doubling of the electric storage capacity of existing lead-acid batteries, while also freeing up additional space inside the hull and improving underwater endurance in collaboration with the onboard AIP system. Other differences include the implementation of air turbine pump (ATP) torpedo launch systems, improved weapons handling and launch system (WHLS), increased coverage of onboard sonars, improved information processing systems and further automation of data processing, target tracking and weapons guidance.