blockships used during ww1 to protect the anchorage of the scapa flow, orkney, scotland.

shore coast sea wetland ocean beach horizon marsh bay terrain water cliff mudflat wave sand landscape reservoir blockships sunken old vessels used ww1 protect anchorage scapa flow orkney islands scotland uk#39aph39#s main naval base ww2 anchor blockship blockships burray cliff cloud coast coastline diving europe farm farmland german graemsay great britain horizon hoy island isle landmark landscape mainland naval base ocean orkney islands outdoors scenic scotland scottish scuttled scuttling fleet sea ship ships shore south ronaldsay sun sunk sunken uk viking water world war war ww1