Multiple slope structure

Offshore arctic structure

Offshore double cone structure

Offshore drilling and production

Offshore structure and installation method

Offshore structure and method of sinking same

Offshore structure in frigid environment

Protective construction for a platform installed in the open sea

Reinforced concrete offshore platform

Removable bottom founded structure

Rubble-spray ice island

Spray ice structure

Stepped steel gravity platform for use in arctic and subarctic w

Strengthened protective structure

Two-section arctic drilling structure

Warm air canopy system for providing ice-free zone