JS Harima (AOS-5202) is a Hibiki-class ocean surveillance ship of Japan Maritime Self-Defense Force (JMSDF).

Hibiki-class vessels have a beam of 30 metres (98 ft 5 in), a top speed of 11 knots (20 km/h; 13 mph), and a standard range of 3,800 nautical miles (7,000 km; 4,400 mi).

[5][4] Data from the sensors is relayed through the Defense Satellite Communications System and processed and shared with the United States.

On 4 February 2001 at 4:11 AM, about 110 km South of the main island of Okinawa (25 degrees 08.4 minutes north latitude, 127 degrees 32.0 minutes east longitude), a tuna longline fishing boat, belonging to the Naha district fishing port in Okinawa Prefecture (11th Hikei Maru [9.1 tons]) had its longline scratched by the outer panel of the center of the starboard side, and a hole, with a diameter of 50 cm, occurred in the bow of the Hikei Maru, causing a wreck.

On October 25 2001, at the Naha Branch of the Japan Marine Accident Inquiry Agency, the Hikei Maru crew members took measures to prevent operations due to the lack of movement monitoring on the Harima side and non-compliance with navigation between various vessels.