worst fog ive ever been in was on my boat in the middle of rattan bay. we could see maybe 30 foot around the boat. was running low on gas, then heard the loud horn of a large ship. missed us by 30 feet. almost ran into SI. found some small channel markers, headed in hoping to find gas, people are like how did you find this place? people cant find it when the suns out and its clear.
long story short i took a cab back to the gwb where my truck and trailer was, and had to go pick the boat, and 3 more souls lol bought a gps the very next day.
then theres 91 and 95 in CT, thats damn thick pea soup fog for sure, like stop traffic thick.