11th Regional Coast Guard Headquarters, Coast Guard headquarters in Minato-machi, Naha, Japan

The 11th Regional Coast Guard Headquarters occupies the Naha Port Joint Government Building, a seven-storey red-brick structure with a grid of dark rectangular windows and a three-arch arcade at ground level. A lattice communications mast with antennas and a satellite dish stands on the roof. The headquarters moved into this building in February 2025.

The facility was created following Japan's postwar reorganization of maritime security forces, ending military navy control and transitioning to civilian administration. This transformation established the foundation for the modern system of regional coast guard headquarters that operates today.

The headquarters' official name is written with the kanji numeral 十一 (eleven) in vertical or horizontal text, and its English name is 11th Regional Coast Guard Headquarters. Its vessels carry names drawn from Okinawan places and plants, such as Ryukyu, Okinawa, and Deigo, the prefectural flower.

The headquarters is located near Naha Port and is accessible by road. As an active operational facility, public access may be limited, so verify visiting conditions in advance.

The headquarters is the largest regional coast guard district in Japan, with 19 large patrol vessels and 1,722 personnel as of the end of fiscal 2015. Its dedicated Senkaku territorial-waters security unit, completed on 24 February 2016 with the commissioning of the Kunigami-class patrol vessels Aguni and Izena, has 606 personnel.