Seven Viking til kai for å bygge om til batterihybrid.

'Seven Viking' converted to battery hybrid

After five years at work, the diesel-electric subsea vessel ‘Seven Viking’, yard number 285 from Ulstein Verft, has been converted into battery hybrid propulsion. Several service personnel from Ulstein have been on board to adjust the switchboards, make changes to the power management and the ULSTEIN IAS™.
Published
20 December 2018
Share
  • Ulstein service personnel, Darko Skaron, Vegard Djupvik and Kristian Yksnøy, on the ‘Seven Viking’ during sea trial after conversion to the new hybrid solution.

Les på norsk

The battery pack has been delivered by Westcon, and the refurbishment must be completed before the vessel contract with Equinor commences in January.

"Conversions to hybrid vessels have proved to give very good results in terms of improved operating economy and reliability", says Steinar Røsberg, who is project manager from Ulstein.

"We note an increasing interest from various shipowning companies that wish to adopt the new technology to make their ships more reliable and efficient."


The subsea vessel Seven Viking was delivered by Ulstein Verft in 2013 and is now working on her second five-year contract for Equinor. The offshore activities in the IMR contract (inspection, maintenance and repair) on the Norwegian Continental Shelf will begin in January 2019.

Latest news

The heavy lift pipelay vessel, ‘JSD 6000’, is a customised ULSTEIN SOC5000 design. The 215m long DP3 vessel is equipped with a 5,000t revolving main crane and will be cable of performing J-lay and S-lay pipelay work in max water depths of 3,000m.. The combination of heavy lift and S-Lay capabilities together with J-Lay functionality via a large, off-centre moonpool, allows the vessel to serve deepwater and SURF markets as well as shallow-water EPCI projects.  The JSD 6000 vessel is the third cus
Press Release

Totally three Ulstein ship designs win Work Boat World Awards for 2024

Three of Ulstein's designs are among the Work Boat World Awards 2024 winners. Tamhae 3 clinched the 'Best Large Research Vessel' award, Olympic Boreas was named 'Best CSOV', and JSD 6000 took home the 'Best Derrick Layer' accolade from Baird Maritime/Work Boat World. These awards celebrate the best vessels in their categories, judged on design, build quality, and functionality.