Great photo, but I am somewhat surprised by some of the responses. I sailed for many years on the East Coast of Scotland where drying harbors are the norm. Every day at low tide, it was normal to see boats lying on their sides in the mud - long keels, fin keels etc. I was lucky and had bilge keels (ie twin keels) which mean that my boat sat nicely. None of these boats came to any harm.
I suppose if the boat was held more or less upright in a marina dock (all the boats I am referring to were on swinging moorings) then the full weight of the boat might rest on the keel. However, I imagine that it would be a very unusual circumstance to have so little water that this actually happened.
Leith (rhymes with teeth) is the port of the City of Edinburgh in Scotland. A Leither is someone who comes from that area.
I must go down to the sea again, to the lonely sea and the sky - I left my shoes and socks there, I wonder if they're dry?