This submarine lies in shallow water at the southern end of the beach at Saltburn-by-the-Sea in the North Riding of Yorkshire. At the time we discovered the submarine, back in 2006, it was laid at a depth of 100 feet just off the underwater bedrock out from the cliff face. At that time it was in relatively good condition and the hull was intact, as revealed in this Merlindown deepscan image which shows the submarine, still in one piece, lying on the sandy sea bed.
Since then, due to tidal action, sea storms and breakers, the forward part of the hull has broken away. In this deepscan image (left) we see the submarine in her new position, buried in sand after being broken in two. The submarine now lies in less than 30 feet of water at low tide with only a small amount of the outer casing visible. However, the amount of the submarine that is revealed is constantly changing due to tidal effects.
We initially passed the information to English Heritage as a contribution to their project to locate British and German submarines which sank off the coast of England, although we have heard nothing back from them. In our opinion, and as her shape suggests, the submarine is an early boat (submarines are often affectionately called boats by their crews). At the moment, however, her origins remain a mystery.