Parat Halvorsen AS gathered key personnel from the maritime industry to a technical review and discussion of tank heating solutions for supply vessels with NOFO notation. Technical and operational persons from shipyards, shipowners, consultants and the NCA (Norwegian Coastal Administration) were present as practical tests were performed at the company fabrication and test facilities in Flekkefjord. The seminar also covered the basic background theories for the empirical tests. One important aspect being that oil has less than 20% of the thermal conductivity of water.