Saw these on holiday in Norfolk. Turned East along the beach having walked through the bird reserve at Titchwell. I'm not very good on tanks. Any ideas, perhaps there's a story? I don't think I'm the first person to see them. Looks like they were used as targets at some point, judging by the holes. Apparently there is a Zeppelin engine in the reserve somewhere, fell off before it crashed at Thebberton.