Our Services

Great Circle

Offshore & Marine

At Great Circle Offshore, you can find expertise in any of the following type of operations, whether  it  be a large EPCI project in West Africa or a simple shallow water operations in the Gulf of Mexico. 

We specialize in providing project management for all types of offshore marine projects, including planning, scheduling, budgeting, specifying vessels and equipment, selection and chartering of vessels, procurement of rigging and equipment and conducting HAZID's, HAZOP's in preparation for offshore operations.

We follow the Project Management Institutes PMBOK guide and support our clients by planning projects to comply with their internal stage gate processes.

We can support your design, planning, procurement and execution in the following types of operations:

  • Deepwater Mooring Installations:

                     > Drag embedment anchors,

                    > Driven pile anchors,

                    > Suction pile anchors,

                    > Vertically loaded anchors or

                    > Gravity base anchoring systems

  • Deepwater Moorings

                     > Polyester- Chain Moorings

                    > Wire - Chain Moorings

  • Towing and Passage Planning:

                       > FPSO's/FSO's

                     > Spar's

                     > Semi-submersibles

                     > Towing Manuals

                     > Planning and Sizing of Towing Gear

                     > Emergency Towing Gear

  • Specialized Offshore Installation:

                     > Ballasting Operations on Floaters

                     > Fixed Ballast installation (Magnetite)

                     > Float On / Float Off

                     > Topsides Floatover and Mating Operations

                     > Hull Ballasting & Upending Operations

                        (Spar's/Buoyant Towers)

  • SURF (Subsea Umbilical Risers and Flowlines)

                      > Transport and Installation of subsea equipment

                        (Jumpers, Manifolds, Flying Leads, HPU's, PLET's, etc.)

                     > Transport and Installation of Flexible pipelines

                     > Transport and Installation of Umbilicals


  • Yard Planning

                     > Storage and Logistics

                     > Mobilization and Demobilization of Vessels

                     > Tugs and Inland operations

                     > Planning for heavy lifts 

                     > Planning for load outs on submersible vessels and barges

                     > Client representation for SIT's and FAT's