Unknown: Rysa Little, Scapa Flow, Orkney

Scotland's National Record of the Historic Environment records Unknown: Rysa Little, Scapa Flow, Orkney as Boom Defence (20th Century)(possible), Salvage Debris (20th Century)(possible), Anchor (20th Century)(possible), Box (wood)(20th Century)(possible). The official map says its point is accurate as follows: NGR given to the nearest 1m. The record does not by itself mean that the public may enter the place.