Not sure if this is the proper group, please let me know if there is a better fitting group
I found that there seems to be a big obstacle very close to surface, inside the golden gate bridge, about 200 meters right to the east of the north tower. The area around the bridge is about 300ft deep, but once I reach about 1/4 of the bridge opening from north tower, and fall off and return back into the bay, shortly after I sail back, the depth
suddenly reduces to 50ft,....20ft 10ft. Then after 1 second it's back to 200ft again
I read that there are sunken ships there , is this what you found too?