(Major milestones after 1997)

Marine Survey and Measurement

• Marine survey on Japan side of Russia-Japan Cable Network(RJCN) (in 2007)
• Participation in the research project, "ecological observation on sperm whales" by KDDI Research Laboratory and the Institute of Industrial Science, University of Tokyo, using the autonomous underwater vehicle, AQUA EXPLORER 2000 (2004, 2005)
• Survey on the exposed portion of shore-end cable conduit at Ajigaura station (2003)
• Survey on PC-1/EAC cable burial status, off Ajigaura(2002)
• Survey on the cable status of Taiwanese domestic cable after the cable laying and burial using AQUA EXPLORER 2 (1999)
• Confirmation of the JIH cable route and the survey on rock reefs, off Ajigaura using AQUA EXPLORER 2 (1999)
• Control point measurement relating to KDDI Sendai submarine cable station(1998)
• Marine survey on Japan Information Highway (JIH) (1997)

Construction for Cable Landing

• UNITY: Construction for the cable landing, laying and protection at Chikura station (2009)
• FLAG North Asian Loop (FNAL) Cable System: Incidental and protection construction at the Wada station's cable landing (2001)
• C2C: Construction for the cable landing, laying and protection at Chikura station (2001)
• C2C: Construction for the cable landing, laying and protection at South-Shima station (2001)
• APCN2 cable: Construction for the cable landing, laying and protection at Chikura station(2001)
• EAC cable: Construction for the cable landing, laying and protection at Ajigaura station(2001)
• EAC cable: Construction for the land cable laying and the jointing at Ajigaura station (2001)
• EAC cable: Construction for the cable landing, laying and protection at Shima station (2000)
• EAC cable: Construction for the land cable laying and the jointing at Shima station (2000)
• China-US cable: Construction for the cable landing and protection at Chikura station(1999)
• China-US cable: Construction for the cable landing at Chikura cable landing station (1999)
• Japan-US CN: Construction for the cable landing and protection at North Ibaraki station (1999)
• Japan-US CN: Construction for the cable landing at North Ibaraki station (1999)
• Japan-US CN: Construction for the land cable laying at North Ibaraki station (1999)
• Japan-US CN: Construction for the cable laying and protection at Maruyama station (1999)
• Japan-US CN: Construction for the cable landing at Maruyama station (1999)
• Japan-US CN: Construction for the cable laying at Maruyama station (1999)
• PC-1 cable: Construction for the shore-end cable installation at Ajigaura station (1999)
• PC-1 cable: Construction for the shore-end cable installation at Shima station (1999)
• PC-1 cable: Construction for the land cable laying at Shima station (1999)
• PC-1 cable: Construction for the shore-end cable installation at Shima station (1999)
• JIH: Construction for the cable laying and protection at shallow water sections (at 11 stations) (1998)
• JIH: Construction for the cable landing (Chikura, Toyohashi,Fukuoka, Naoetsu, Niigata, Matsutou, Akita, Sendai, Ibaraki) (1998)
• Miyazaki-Okinawa cable and JIH-A,B cable: Construction for the cable landing (1997)
• Miyazaki-Okinawa cable: Construction for the cable landing at Okinawa (1997)
• Miyazaki-Okinawa cable : Construction for the cable protection at Miyazaki side (1997)
• Miyazaki-Okinawa cable: Construction for the cable protection at Okinawa side (1997)
• FLAG cable segment Q3: Construction for land section at Miura station (1997)

Installation of Grounding Facilities

• EAC cable: Construction for the grounding cable laying and the jointing (2001)
• C2C cable: Construction for the power feeding facilities at Chikura station (2001)
• C2C cable: Construction for the power feeding facilities at South Shima station (2001)
• PC-1 cable: Installation of the grounding facilities at Ajigaura station (1999)
• PC-1 cable: Survey on the grounding facilities at Ajigaura station (1999)
• PC-1 cable: Installation of the grounding facilities at Shima station (1999)
• PC-1 cable: Survey on the grounding facilities at Shima station (1999)
• Japan-US CN: Installation of the grounding facilities at North Ibaraki submarine cable landing station (1999)
• Japan-US CN: Survey on the grounding resistance for power feeding at North Ibaraki submarine cable landing station (1999)
• Japan-US CN: Survey on the grounding resistance for power feeding at Maruyama submarine cable landing station (1999)
• China-US cable: Installation of the grounding facilities at KDDI Chikura cable landing station. (1999)
• JIH: Installation of the grounding facilities at the submarine cable landing stations(Chikura, Okinawa, Fukuoka, Kumihama, Matsutou, Niigata, Akita, Ishikari, Ibaraki, Sendai) (1998)
• JIH cable: Survey on the grounding facilities (11 stations) (1997)

Installation of Conduit Facilities

• Construction for cable repair and protection of JIH·PC-1 offshore at Ibaraki(2007)
• KDDI Sendai submarine cable landing station: Installation of the conduit facilities for the submarine cable (1998)
• KDDI Niigata submarine cable landing station: Installation of the conduit facilities for the submarine cable (1998)
• KDDI Matsutou submarine cable landing station: Installation of the conduit facilities for the submarine cable (1997)
• KDDI Akita submarine cable landing station: Installation of the conduit facilities for the submarine cable (1997)
• KDDI Toyohashi submarine cable landing station: Installation of the conduit facilities for the submarine cable (1997)
• KDDI Okinawa submarine cable landing station: Installation of the conduit facilities at land section and reef section(1997)

Others

• RJK cable: Landing cable removal of the Naoetsu station(2009)
• JIH cable: Cable removal offshore at Niigata(2009)
• JIH cable: Cable removal of the shallow water section (Kumihama, Matsutou, Niigata)(2008)
• JIH cable: Cable removal of the shore end section (Kumihama, Matsutou)(2008)
• JIH cable: Cable removal of the shallow water section (Hamada)(2006)
• Removal of KDDI Hamada submarine cable landing station(2006)