Portishead Lock Operations

We met the captain and crew of the Jon Seagull on her way out of the locks for a day of fishing. Here, we watched as she came in. You can watch more on their channel; https://www.youtube.com/@sailingwithaweirdo/featured These are interesting lock doors as they open inward. If anyone knows the name or type of lock gates, please leave a comment. Watch as the water is allowed to fill the lock.