Marine Weather Statement issued November 27 at 4:14PM PST by NWS San Diego CA

Patchy areas of dense fog with visibility 1 NM or less is expected
now through Thursday morning, especially for the nearshore
waters. Fog should lift/clear an hour or two after sunrise.

Mariners should be prepared for sudden drops in visibility.
Reduce speeds and be on the lookout for other vessels. Use radar
or GPS navigation if available, and consider remaining in harbor
if such equipment is unavailable.