Unveiled on 16 April 2012 by Mr Martin Allen, whose father Herbert was a member of the crew, but had been transferred the day before the submarine sailed, the memorial is similar to that at Gosport. Relatives of those who were lost together with representatives from veteran's organisations, the Royal Navy and local officials attended. Captain John Egdell, Captain SM2, said: "We still don't really know what happened to this submarine... but you could see by the expression on the faces of many of the families they felt this was a fitting memorial to their loved ones."