The Hammerfest Basin velocity model covers also partly the Finnmark platform. The limit is defined by the Troms-Finnmark fault complex, which presents a major displacement. In this context, seismic velocity merging is very challenging. Estimages’ state-of-the-art technology allows to build a stratigraphic grid based on regional interpretations and use this grid to perform a velocity merge by 3D non-stationary factorial kriging. This gives mind-blowing results where merged seismic velocities match geological features. This is not the case with a more classic approach. Thanks to Concedo for their authorization to share the work that we have done for them on the Hammerfest Basin.