Semi-Sub Rig Moves

iSURVEY has well proven, extensive experience in positioning semi-submersible rigs safely on to location. As with jack-up rigs, we offer effective solutions based on GNSS to navigate the rig in a safe and controlled operation.

Pre-laying anchors using an AHV and an ROV prior to the actual rig move is now the default method, but we continue to support traditional rig moves.

A standardised mobilisation report and rig move survey report are provided, containing required calibrations, verifications, as-built data and anchor catenary calculations.