Deep-sea submersible technology, essential for marine exploration and operations, varies greatly among leading nations. The United States' submersible "Limiting Factor" holds the top spot, reaching a record depth of 10,916 meters in the Mariana Trench's Challenger Deep. Japan's "Deep Sea 6500" ranks second, with a maximum depth of 6,526 meters. Meanwhile, China is working diligently in this sphere, but its position in this technological race isn't specified. The development of these high-precision, cutting-edge technologies requires extensive resources and sophisticated research, making them comparable to spacecraft in complexity and challenges.