All vessels arriving at a Scapa Flow for Ship-to-Ship (STS) transfer operations must arrive with their propeller submerged and a trim no greater than 4.0 meters by the stern. A trim must be maintained to allow the vessel to be manoeuvred without difficulty during their stay.

All transfer operations will comply with the current OCIMF (Oil Companies International Marine Forum) STS Transfer Guide and the approved company STS procedures.