From this past fall. Fishing Tangier Sound on a wonderfully flat day jigging for rockfish and the fog just rolled in outta nowhere. No radar on my boat so we stayed within sight of one of the charters that had it.
The fog takes a large expanse of water and makes things feel very intimate. Scary and cool at the same time.
We decided we'd have to follow a charter in if they left but fortunately they didn't get their limit before us. GPS would get us back just fine but wouldn't keep us from running into the path of someone else.
by comparison here's a day that saw one of our boys losing his breakfast (doesn't look bad in the pics, never really does, but was a tough day)