Navigational Safety in SPM (Single Mooring Point) Regions

For oil and gas transportation in some places used SPM (Single mooring point) system, this is located in the open sea and very often not so far away from the shore. Differences between the wind loads, waves and current forces can take a place. More complicate conditions can be in case if FSU is still in ballast and more influence has wind and waves as current and in the same time tanker in loaded position is more influenced by the current. Navigational safety ensure in SPM regions requests deep theoretical studies and very clear understanding of forces and moments, which influence on all the system (SPM, FSU, Tanker, tugs), practical implementation of proper equipment and use of correct methods of navigational safety. In this article there is made analysis of possible failures and necessary actions to ensure navigational safety in SPM regions