URL https://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/USS_Radford_(DD-446)_steaming_into_Tulagi_Harbour_with_468_survivors_form_USS_Helena_(CL-50)_on_6_July_1943.jpg/440px-USS_Radford_(DD-446)_steaming_into_Tulagi_Harbour_with_468_survivors_form_USS_Helena_(CL-50)_on_6_July_1943.jpg
URL2 https://ja.wikipedia.org/wiki/クラ湾夜戦
