OK, OK, all you wizened old salts out there have probably already heard of this new sailing hazard from your various sailing feeds. I had too, but this BBC News link gives a really helpful video of the extent and location of the shifting sandbank.

https://www.bbc.co.uk/news/av/uk-england-hampshire-64817305

After all, it's not that often that we see such a significant change in such a short period of time, so worth noting.