Nov. 17 - Leave early for St. Catherine’s Sound. Wind is light and seas calm. Whatever wind we had dies when we leave the exit channel and turn South, so it’s the "iron jenny" (engine for the non-sailors) today. Our course takes us right by the sea buoy at the Tybee Roads (Savannah River) entrance and as we approach it, dense fog sets in. Savannah is a major shipping port and I am riveted to the AIS (Automatic Identification System) targets entering and leaving the entrance channel, all of which have to pass right by the sea buoy.