Moss Maritime has significant experience in design of units operating in cold, harsh and ice-infested areas. We contribute to projects involving arctic challenges such as ice load calculations, hull design and optimization for ice breakers, ice model testing and winterization. Calculations are performed either using relevant design rules or more advanced direct calculation methods such as continuum modelling of ice and icebergs.
With the Arctic as a close neighbor and area of business, the Moss team has gained the experience to design units with ice-breaking and survival capabilities to withstand the impact of the arctic extremes.
Moss Maritime has extensive experience in mooring and stationkeeping analysis in arctic environments, both for moored and dynamic positioning (DP) vessels such as drilling rigs and production platforms.
To address the challenges for operation in ice, Moss Maritime has developed optimal solutions for turret-moored vessels with improved station keeping capacity during ice-drift reversal. Our experience provides a solid foundation for the creativity to develop innovative and cost-effective solutions for today’s oil and gas industry.
Moss Maritime has designed several drilling rigs capable of operation in mild ice conditions. Two CS50 arctic units were delivered to Gazflot intended for drilling wells in the Shtokman area. The ice capabilites of the rigs were tested with ice model tests.
Further, the rig "West Alpha" was used in the summer season to drill in the Kara Sea. Evaluations included nonlinear ice-structure interaction to document the capability of the rig to sustain minor ice impact loads. Moss Maritime has also been a preferred contractor for both Shell and Exxon Mobil when passing novel concepts capable of operation in ice conditions.