We made a side trip back into the U.S.A. to fill the gas tanks at U.S. prices.   While we were there we checked out the Valley Camp Museum, housed in a Great Lakes freighter.  We both found it very interesting.   Our timing at the Soo Locks worked out very well since we got to see two ships enter the two locks nearest us.  One of them was coming in from Lake Superior and being lowered to the level of Lake Huron.  The other came from the opposite direction and was raised to the level of Lake Superior.

Click on each thumbnail to see larger picture.