[stevej37]

I found this...a real good explanation of the whole process....

https://www.marineinsight.com/guidelines/how-the-water-locks-of-panama-canal-work/#:~:text=The%20Panama%20Water%20Lock%20System%20co nsists%20of%20a%20total%20of,both%20ends%20of%20th e%20canal.