Built by Hyundai Heavy Industries (HHI) on contract for Subsea7 S.A..
Delivered in 2017 as a heavy construction / flex-lay vessel.
Length overall approximately 162.3 m, beam about 32.0 m.
Classification includes design for operation in harsh/winter conditions (ice class 1D; winterised).
DP Class III (dynamic positioning) with capability for complex subsea operations.
Heavy-lift crane capacity: 1,000 t crane on board.
Under-deck basket storage capacity for flexible pipe/umbilicals ~ 7,000 t.
Operating depth capability up to 3,000 m.
In 2022 announced hybrid energy storage system installation (battery room 1,250 kWh) to reduce CO₂ emissions.
The vessel has been involved in major subsea projects including the Turkish Sakarya Gas Field development.
Timeline of Key Events for Seven Arctic
- November 2012
Subsea7 S.A. awards a contract to Hyundai Heavy Industries (HHI) (South Korea) to build a new heavy-construction / flex-lay vessel named Seven Arctic. The vessel is intended to serve ultra-deepwater subsea construction projects. - June 2015
According to an article on the build progress, construction at HHI is on track, with key modules such as the vertical lay system and large crane under assembly. Delivery targeted for 2016. - March 2017
Subsea7 publishes an investor presentation detailing the vessel’s design, capabilities, and market role. The slide deck indicates the project commenced in 2012 with specification and tendering, and underscores its role in ultra-deepwater field development. - 2017 (Date unspecified)
Delivery completed — Subsea7 formally takes delivery of Seven Arctic, marking the end of the build programme (along with sister vessel Seven Kestrel) and the start of operational deployment. - October 2022
Subsea7 announces a major upgrade: the installation of a hybrid energy storage system on Seven Arctic to reduce CO₂ emissions by approx. 5,000 tonnes annually. The vessel is fitted with a 1,250 kWh battery container and shore-power connection. - October 11, 2022
Offshore-Energy.biz reports that Seven Arctic is en-route to the Turkish Black Sea to work on the Sakarya Gas Field development for Turkish Petroleum (TPAO). The contract involves installation of seabed hardware and up to 140 km of umbilical and flexibles at depth.
