asean Asia China china coast guard ccg chinareachvietnam china’s maritime safety administration drake long Exercise greg poling hai xun 1110 Japan kj-500 maritime surveillance plane launches macclesfield bank Naval nguyen xuan phuc paracel islands. paramilitary fishing fleet people’s liberation army navy Philippines plan planmc Sea Singapore South south china sea Taiwan type 071 warship u.s. navy vietnam woody island yuzhao-class