The marks are not official or surveyed. This is more for informational purposes but they look pretty close to me. Any corrections, let me know and I'll update the map. I too will be checking on the GPS to see if any of the common ones we use are off like if Colorado Reef is in the right place on the way to HMB. From the nkissel gihub web site
https://github.com/nkiesel/YRA-Marks...ster/README.md here is the citation for the source of the mark coordinates. If anyone finds out who this person is, I'd like to thank them for the list of coordinates.
" GPS coordinates for YRA Racing marks in San Fancisco Bay
This project contains GPS coordinates for nearly all racing marks in the San Francisco bay and some other "interesting" marks. The information here was collected from multiple sources:
existing web sites
NOAA ENC charts
sailing clubs"
The coordiantes looked to be fairly accurate but any corrections would be welcomed.
Matt