I love charts - the tactile element is great, but being able to sit and work out all the little anomalies of an area is just cool (to me anyway

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Absolutely agree.
I do use a paper chart for the Humber above the Humber bridge as no electronic chart exists except for the marks on shore
I'm not surprised, they would be printing thousands. I watched a video about the estuary a while ago and seeing how much dried out and the shifting sand banks would to say the least make the approaches a tad anxious. It's a larger scale version of Christchurch Harbour approaches, the shifting sands catch out quite a few yachtsmen and the lifeboat often has to sort them out.
I saw a programme a few years back about Dogger the sandbank out in the North Sea, I hadn't realised it was the land connecting the UK to Europe before the last Ice Age, no wonder it's shallow.
Loved the video of Wells next the Sea, very similar approaches.