An investigation by the Japan Coast Guard reveals that approximately 37% of its 386 patrol vessels, which are essential for maritime rescue and coastal security, have surpassed their expected lifespan of 20 to 25 years. These aging vessels are reported to have suffered issues such as leaking pipes and temporary operational failures, with some being kept in service through repair works. The situation is exacerbated by budget priorities in areas like the Senkaku Islands and an overall workforce shortage in Japan.

The patrol vessels are categorized into medium and large vessels for extensive sea operations (147 total), and smaller patrol craft primarily for harbor and coastal areas (239 total). The aging vessels present operational challenges, as the number of patrol ships exceeding their lifespan includes 34 larger vessels (23%) and 107 smaller vessels (45%). Such aging equipment increases the risk of failures, with maintenance becoming more time-consuming and complex due to wear and corrosion factors inherent in aging maritime vessels.

Additionally, the situation poses a significant concern for Japan amidst rising tensions with Chinese Coast Guard vessels in the vicinity of the disputed Senkaku Islands. The Coast Guard has highlighted the risks associated with sending aged vessels into demanding operational scenarios against increasing maritime threats. Some officials express that performing critical tasks on aging ships can compromise the expected performance and efficiency necessary for ensuring national security in maritime operations.