Sat Jul 21st, Day 78:  Port Severn to Midland on Georgian Bay.  Prior to heading out into  Georgian Bay, we needed to go through one more lock, #45 of the  Trent-Severn and #117 of the overall trip.   Unfortunately this lock  was relatively small, only allowing one larger boat at a time, which  meant that we would have to wait 2 hours before going through.    Once  through the lock, we headed across to
Midland, where we would wait for  Al & Dawn to drive their car up to the North Channel (6 hours each  way), and return via a rental car.  While at the marina in Midland, I decided to take advantage of being near a boat service yard, and have  Rickshaw pulled out of the water to check the props.     As the Big  Chute operator
had reported, the port prop was several dings, so we  opted to put a spare pair of props that we had on board on the shafts,  and have the damaged ones repaired somewhere down the road.     After  the switch of the props was completed, we were splashed back into the  marina, and moved back to our slip.  We were pleasantly surprised to find another couple of loopers from York River, Mike & Kathy on  Queen Kathleen, in the marina, so we invited them to have appetizers,  drinks and dinner with us and Al & Dawn, on our aft deck, where we  enjoyed conversation about shared experiences along the loop.