The SS Sposa was a whaling vessel that ran aground in 1964 and has been resting there in Conception Harbour ever since. It was one in a fleet of 5, apparently there are two others underwater somewhere in the harbour. This vessel makes for very dramatic photos, but leads to question why these ships aren't cleaned up.
Also, there was no plaque or anything in the area to describe the boat. The info above is from several websites.