Yokosu Airfield

Military defeat and dissolution of the Imperial Japanese Navy following the end of World War II. The airfield was surrendered to Allied forces and its original operational entity, the Komatsushima Naval Air Group, was disbanded. The facility itself was not permanently closed but was repurposed.

The site was never fully abandoned. It is the location of the modern, active Japan Maritime Self-Defense Force (JMSDF) Komatsushima Air Base (ICAO: RJOP). It is a major helicopter base for the JMSDF, home to Air Squadron 24, which operates SH-60J/K helicopters. The base's primary missions are anti-submarine warfare, search and rescue, and maritime surveillance. The identifier JP-1273 is a non-standard, unofficial code, likely from a third-party or historical database, referring to this location.

The facility, historically known as the Imperial Japanese Navy (IJN) Komatsushima Air Group base, was a significant military airfield during World War II. Its location in the Yokosu district of Komatsushima gave it its informal name. It served as a key base for both seaplanes and land-based aircraft. Operations included training for naval aviators, anti-submarine warfare patrols, and coastal defense of the vital Kii Channel and surrounding waters. It was an important part of Japan's Pacific war effort.

None. The site is an active and strategic military installation with no known plans for decommissioning or conversion to civilian use. It will not be 'reopened' as it is currently in full operation as a military air base.