Some years ago, I wrote a small utility to view Seamap’s Gunlink SEGD files.
As I didn’t have much data to test with, it had some limitations.
Recently, I acquired some more files that has let me take it a bit further.
It now shows other variants including the pseudo SEAL as well decoding the external header if available.
This header contains a wealth of QC information and has got me thinking about a fully fledged QC application that
will track gun performance. Whether I actually get around to writing it remains to be seen.
More on the current Gunlink Viewer here:
https://seismatters.com/SMGLV.html
It is available as Nagware