[Machine Translation] Japan is surrounded by the sea on all sides. The Maritime Self-Defense Force (MSDF) is charged with the mission of securing Japan's territorial waters and maritime trade routes, as well as intercepting enemy forces at sea with powerful strike capabilities when they come across the sea in an attempt to invade Japan. Furthermore, with its Aegis destroyers and SM-3 missiles, the Maritime Self-Defense Force is second only to the U.S. in ballistic missile defense capability. This work provides a detailed explanation of the Maritime Self-Defense Force.