That is 10 locks in 2 miles!
Each lock means the opening and closing of four paddles to let water in and then out again.
Each lock also means the opening and closing of the gates to let the boat in and then out again.
That all takes time. Lots of time.
Translation, that was the sum total of what we accomplished in a day.
Since it was sunny and not raining it was an enjoyable day full of healthy exercise and fresh air. I slept well.