You can find some stats at NGA Charts project stats
or just pull the database from github and you have all the data daily to do whatever processing you want...
Complete processing of one chart takes up to ca. 5 minutes on a single
Xeon X3440 with 8 gigs of RAM (depends on the size of the chart, the need for rotation and the load on the machine as the process is reniced to 19, so everything else has precedence)
The next step is to modify the calibration page to do the insets - The calibrators were as usually much faster doing their job than I can find the time to write the code
It's probably not very realistic to ask for help with this page, but there are two tasks that need to be done and are separate that come to my mind:
1) Tooling to pull the updates from the NGA site - unfortunately it's not as easy as parsing the table on say Region 1 - North America NGA Nautical Charts
- NGA as far as we've seen often just uploads new images
to the subfolders of Index of /NGAViewer
without changing the catalogs.
2) Release tooling - scripts to package the whole release, by region and prepare the .torrent files for them + the same for increment since the last complete release - of less interest for you
Anyway I will try to have the calibration page by the end of the week, but it really depends on the workload I will receive from my real work, which is especially in the last weeks totally unpredictable as the managers have obtained new toys drawing some graphs.