[2] Since the mass retirement of the Shiretoko class was planned in the 2010s, general-purpose ships as replacements were needed.

[3] Due to the demand for multi-mission capabilities, displacement hull made of steel was adopted.

[1] As a main weapon, a JM61-RFS 20 mm rotary gun system with an optical director was installed on the early ships built under the FY2009 and FY2012.

And more powerful Bushmaster II 30 mm chain gun system was installed on the late ships built under the FY2013 and following fiscal years.

[5] The 10 Kunigami class ships leading JCG's increased focus on grey-zone challenges along with 2 Hateruma-class patrol vessels has made the base at Ishigaki JCG's largest base, surpassing Yokohama.