Recently I've been downloading some marine seismic data provided by NAMSS/USGS. I found out that this data has a different navigation data that I am not familiar with. Instead of using line names, it uses the date and time. How can I use this navigation data to make the geometry of my seismic lines? The format of the navigation data is listed as .420. I am using petrel for loading the data.

See More: USGS NAMSS navigation of seismic data