It doesn't happen often as most people simply feign interest when I talk narrowboats.
Anyhoots ... here is a video of a boat descending through a lock.
The next video shows a boat ascending a flight of locks. Unfortunately, you don't get as good a view of the process when ascending, unless it filmed from above (I'll try an edit in a better one later).
And this video is just to remind aussies about the weather during the less celsius-friendly months. Still looks good though : )
