(which is also referred to as HS-22) is a unit in the

Japanese Maritime Self-Defence Force , abbreviated , also simply known as the Japanese Navy, is the maritime warfare branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. The JMSDF was formed following the dissolution of the Imperial Japanese Navy (IJN) ...

. It is a part of the

Fleet Air Force In the Japan Maritime Self-Defense Force (JMSDF), the Fleet Air Force ( ja, 航空集団, kōkū shūdan) is its naval aviation branch, responsible for both fixed-wing and rotary aircraft and headquartered in Naval Air Facility Atsugi. As of 2012, ...

and comes under the authority of Fleet Air Wing 21. Equipped with Mitsubishi SH-60J & SH-60K

anti-submarine warfare Anti-submarine warfare (ASW, or in older form A/S) is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are t ...

helicopters, it is based at

Omura Air Base Omura (小村) or Ōmura (大村) are Japanese surnames, but may also refer to: * Ōmura, Nagasaki, a city located in Nagasaki Prefecture, Japan * Omura's whale (''Balaenoptera omurai''), a species of rorqual about which very little is known Peopl ...

Nagasaki Prefecture is a Prefectures of Japan, prefecture of Japan located on the island of Kyūshū. Nagasaki Prefecture has a population of 1,314,078 (1 June 2020) and has a geographic area of 4,130 Square kilometre, km2 (1,594 sq mi). Nagasaki Prefecture borders ...

.Airborne Ocean Surveillance
Retrieved February 9, 2017

Squadron structure

The squadron is composed of three flights: * 221st Flight is equipped with SH-60K helicopters * 222nd flight is equipped with SH-60K helicopters * 223rd Flight is equipped with SH-60J helicopters

References

Aviation in Japan Units and formations of the Japan Maritime Self-Defense Force Military units and formations established in 2008 {{Japan-mil-stub