The sites relating to the business of Kokusai Cable Ship Co., Ltd.(KCS) are listed here.
| http://www.ujconsortium.com | This is the site of UJ Consortium. KCS is a member of UJ Consortium. |
| http://www.yokohamazone.com | This is the site of Yokohama Zone maintenance. The KDDI OCEAN LINK is responsible for the Yokohama Zone maintenance. |
| http://www.piocma.com | Site of mutual support agreement which KCS is concluding for submarine cable maintenance |
| http://www.classnk.or.jp/hp/en/index.html | Site of Nippon Kaiji Kyokai(ClassNK) |
