Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to Office of the Chief of Naval OperationsDISPATCH TO BE SENT. Date 29 October 1918Prepared by CS- - - - - - - -There are now believed to be nine submarines in the concentration area. Two cruiser submarines and four others believed to be still in Atlantic probably bound for North Sea. Only three sightings of submarines reported october twentyeight, one southwest of Gibraltar, one in Donegal Bay, one in south entrance to Scapa Flow. Reliable information indicates that all German submarines in Mediterranean are to fill up with fuel immediately and return to Germany. No indications as to whether or not they will operate offensively while on the way home. This movement is due to expected action of Austria with respect to peace. A British submarine destroyed a German submarine October twentyeight in North Sea about latitude fiftysix longitude five east. If the report of a submarine in the entrance to Scapa Flow was correct it is possible that it was destroyed by mines as some mines in the field were exploded. Source Note: Cy, DNA, RG 45, Entry 517B.