SEVEN BOREALIS

SEVEN BOREALIS (IMO: 9452787) sailing under the Bahamas flag. It has an overall length of 597 feets and a beam of 151 feets.

Vessel Identification

• MMSI: 311031900
• IMO: 9452787
• Call Sign: C6YG8
• Flag State: Bahamas
• Vessel Type: Offshore Supply / Subsea Construction Vessel

Specifications

• Gross Tonnage: 19,252 GT
• Deadweight: 8,000 DWT
• Length Overall: 156.3 m
• Beam: 31 m
• Draft: 7.8 m
• Year Built: 2011

Propulsion

• Propulsion Type: Diesel-Electric
• Dynamic Positioning: DP3
• Drive Configuration: Azimuth thrusters and tunnel thrusters
• Power Output: Multi-engine configuration supporting DP operations and heavy construction activities

Shipyard

• Builder: Vard (formerly STX OSV)
• Build Location: Søviknes, Norway
• Delivery Year: 2011

Owner / Operator

• Owner: Subsea 7 S.A.
• Operator: Subsea 7
• Management: Subsea 7 Fleet Management
• Registered Owner Country: Luxembourg

Navigation / Communications Equipment

• AIS Class: Class A
• GMDSS: Equipped
• Navigation Systems: Integrated bridge with DP3 control systems
• Communication Systems: VSAT, SSB, VHF/UHF

Operating Region

• Primary Region: Worldwide operations
• Notable Areas: North Sea, Gulf of Mexico, West Africa, Asia-Pacific
• Service Area: Deepwater and ultra-deepwater offshore construction corridors globally

Vessel Description

Seven Borealis is a high-specification pipelay and construction vessel owned and operated by Subsea 7, designed for deepwater subsea construction, rigid and flexible pipelay, and heavy lift operations. The vessel is equipped with a substantial crane capacity and a firing line configuration suited for S-lay and J-lay pipeline installation in challenging offshore environments. Her DP3 dynamic positioning classification allows for operations in the most demanding sea states without the need for mooring. The vessel supports a range of offshore services including flowline installation, umbilical laying, subsea tie-in, and construction support, making her one of the more capable assets in the Subsea 7 fleet for deepwater project execution worldwide.