SU6800 : Mulberry Caisson, Langstone HarbourAs a youngster, I used to play and fish on this abandoned Mulberry. My pal had a little boat with a Seagull outboard motor. At the time (the 50's), I think that it only had one crack across it then. I believe that it was put there because it was cracked when they raised it from it's storage position, sunk somewhere off the coast near Selsey.