Carry a dog. That's the reason for being of the original Newfoundland dogs
Every Grand Banks fishing
schooner carried a dog. In thick pea soup fog
, when lthey couldn't see anything, not even the bow of the boat, they'd be ghosting along, and suddenly your dog's ears would perk up. Over yonder, hidden in the fog
, ghosting along would be another fishing
boat--with their dog. Your dog knew there was another DOG over there!! And he'd start barking his head
off! And the other dog would start barking like crazy!
And that's how they knew which boat was where in the pea souper fogs.
(I don't know nothin' about fog bells....)