| In 1966 | Establishment of Kokusai Cable Ship Co., Ltd. (KCS) |
| 1969 | Japan Sea Submarine Cable(JASC) installation (KDD Maru) |
| 1976 | Japan-China Cable(ECSC) installation (KDD Maru) |
| 1977 | Okinawa-Luzon-Hong Kong Cable(OLUHO) installation (KDD Maru) |
| 1979 | Okinawa-Taiwan Cable installation (KDD Maru) |
| 1980 |
Kuantan-Kuching Cable installation (KDD Maru) Japan-Korea Cable(JKC) installation (KDD Maru) |
| 1982 | ASEAN Thailand-Malaysia-Singapore Cable installation (KDD Maru) |
| 1984 | Okinawa-Ninomiya Cable (Okinawa cable) installation (KDD Maru) |
| 1986 |
Japan-China Cable restoration & installation on the shore end (KDD Maru) |
| 1988 | The 3rd Trans-Pacific Cable(TPC-3) installation (KDD Maru) |
| 1989 | Chikura-Ninomiya Cable installation (KDD Maru) |
| 1991 | The 4th Trans-Pacific Cable(TPC-4) installation (KDD Maru) |
| 1992 |
Completion of the KDDI OCEAN LINK (KOL) Chikura-Miyazaki Cable installation (KDD Maru) The 4th Trans-Pacific Cable(TPC-4) installation (KOL) |
| 1993 |
APC(Asia-Pacific-Cable) installation (KOL) CJ-FOSC(China-Japan-Fiber Optical System Cable) installation (KOL) |
| 1994 |
RJK(Russia-Japan-Korea) Cable installation (KOL) The 5th Trans-Pacific Cable(TPC-5) installation (KOL) |
| 1995 | The 5th Trans-Pacific Cable(TPC-5) installation (KOL) |
| 1996 |
APCN Cable installation(KOL) The 5th Trans-Pacific Cable(TPC-5) installation (KOL) |
| 1997 | FLAG Cable installation (KOL) |
| 1998 |
Exhibition of the KDDI PACIFIC LINK(KPL) JIH(Japan Information Highway) Cable installation (KOL) JIH(Japan Information Highway) Cable installation (KPL) |
| 1999 |
Obtained the certificate of ISO9002：1994 China-US Cable installation (KPL) Japan-US Cable installation (KPL) |
| 2001 |
EAC(East Asian Crossing Cable System) installation (KOL) EAC(East Asian Crossing Cable System) installation (KPL) AJC(Australia-Japan Cable System) installation (Kouki Maru) C2C installation (KPL) C2C installation (Kouki Maru) merged with Kokusai Marine Engineering Co., Ltd. |
| 2004 | Obtained the certificate of ISO14001：1996 |
| 2007 |
RJCN Cable installation (KPL) Koshiki-jima Power Cable Burial Operation (KPL) |
| 2008 | RJCN Cable installation (KPL) |
| 2009 |
UNITY Cable installation (KPL) DONET installation(off Kii peninsula) (KPL) |
| 2010 |
Mishima-Mura Cable installation (KPL) MACHO Cable installation (KPL) Power Cable Burial Operation off Matsuyama (KPL) |
| 2012 |
GOKI ocean cable installation (KPL) SJC shore end cable installation (KPL) |
| 2013 |
KCS HQ's transfer to Kawasaki-City DONET-2 installation(off Tokushima) (KPL) |
| 2014 | Landing and Installation Works of DONET (Dense OceanfloorNetwork System for Earthquakes and Tsunamis) Phase 2 off Tokushima, Japan |
| 2014-2015 | Landing and Installation Works of Japan Trench Ocean Bottom Seismic and Tsunami Network off Sanriku, Japan |
| 2015 |
Landing and Installation Works of FASTER Cable System off Minami Shimaand Chikura, Japan Landing and Installation Works of seismic observatory system off Kamaishi, Japan |
| 2016 | Deployment Work of DSS (Deep-sea Seismic System) off AtsumiPeninsula |
| 2016-2017 | Installation Work of SKR1M Cable System |
| 2017 | Yap Spur/Palau Spur and Chuuk-Pohnpei Marine Installation |
| 2018 |
SEA-US & IGG Cable Instration work and Repeari Work (KPL) Cable inspection on Power cable Hokkaido to Main land (KPL) |
| 2019 |
JIH(Japan Information Highway) J6 off Ishikari Cable (KDDI Pacific Link) KDDI CABLE INFINITY(KCI) in service South-East Asia Japan Cable System2 (SJC2) (KCI) Japan-Guam-Australia Cable System (JGA) (KCI) |
