Toward the end of the Pacific War, Japanese Navy built 189 escort vessels. These escorts engaged in guarding the merchant marines which sailed from oversea territories against US submarine attacks. Almost all escorts were lost during the war, but out of all Japanese imperial vessels only SHIGA still survives at Chiba City. SHIGA, changed her duty and her name to KOJIMA, had taken the role as a community center until 1993. Now it is said that she is going to be scrapped.