I started re-reading a book I first came across in the early 70s called The Worm Ouroboros which was pitched as a competitor to The Lord of The Rings.
At one point the evil king Gorice is doing serious black magic calling up a demon.when the chamber “ rocked as a ship riding in a swell with the wind against the
At the time this wouldn’t have meant anything to me but I’ve since learned that large waves form when the wind blows against the tide .
Being above the lock we don’t often see that at Tammy but on one occasion we took a powerboat course thru the lock and as far down the river as Chiswick on a high tide.
Returning against an ebb tide the frequent turns in the river allowed us to show the students this effect.
Last week I mentioned the rescue of Tony Bullimore and have since found this amazing video about it.