Join Date: Feb 2011
Location: San Francisco Bay area
Thanked 76 Times in 76 Posts
Rep Power: 6
AIS very handy yesterday...foggy on SF Bay
We found ourselves, and half a dozen other sailboats, in a 0.5 mile square patch of sunlight surround by fog. Thankfully the AIS showed all the large, fast-moving ferry and ship traffic. There was a ferry doing 40 knots that only became visible 1/3 mile away, which is only 30 seconds at that speed, but we could see it miles away on the AIS and get out of the way. First time I've been really glad I had it.
Made for some great pictures, though!
Bristol 31.1, San Francisco Bay