Take pictures.
1) I have to find where I ms-placed my camera.
2) I have to be there when it goes past, and they have no time of departure posted.
We have a lot of tankers come down the river ( makes racing interesting at times) . Very rarely do you see them bucking the current. They time their departures to go with the current mostly. ( current flows both ways in the Hudson due to the tide.)
But, on the other hand, the upper Hudson around Albany the channel is narrow and they have to go in daytime ...
Complicated
Hershey
I'll try to find my camera