The west coast
crabbers and towboat operators have collaborated to establish lanes free of crab traps. This effort has established towlanes, advisory lanes during crab season and proposed changes in 2017 for Newport
and San Francisco
. See this link
It comes to mind that this information would be useful to sailing vessels.
From the discussion under another thread begun by Bruce (brmoney) I've created two offerings. A set of Google Earth
and a .gpx file that each shows these efforts.
Download the KAP charts
from this link
Download the .gpx file from this link
And thanks to Paul Higgins for his conversion program C2GPXML which you can download here
(password is phiggins).
Hope this helps