Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to the Office of the Chief of Naval Operations
Cablegram Sent May
18 <19>, 1918
To Opnav, Washington Serial No 8138 LEM
Prep. By O-1 NCT D.R.
8138. YOUR 6076. Foll<o>wing route instructions recommended for USS MERCY. Vessel should be routed to pass fifteen miles south of Fastnet thence fifteen miles south of Old Head of Kinsale thence direct Daunt Rock Lightship and Queenstown to arrive during daylight. Recommend vessel carry regular markings of hospital ship both day and night and that no secret instructions be given her. Further recommend Germany be informed of her sailing route, and destination and that she is first US Hospital ship sent to Europe during war. When in wireless touch vessel should inform Commander-in-Chief Queenstown via Valencia expected hour of arrival. <02419.> 8138
Source Note: Cy, DNA, RG 45, Entry 517B. The original dating was 18 May. However someone crossed through the 18 and handwrote 19 above it. The latter day is confirmed by the time/date stamp just before the signature. The time/date stamp originally appeared several lines below the signature, however someone crossed through it and handwrote it after the text.