Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to the Office of the Chief of Naval Operations, second cable of the day
File No. 16-9-7.
20.June <21,> 1918. RLM
To Opnav Washington Serial No. 9917
Prep. by E-2 NCT D.R.
9917. Your 7482. Admiralty advises that guarantees of safe conduct were issued by German Government to vessels carrying repatriated prisoners of war on direct route between Rotterdam and Boston (England). This does not in any way modify the denial of immunity to hospital ships in English Channel. 01021 9917.
Source Note: Cy, DNA, RG 45, Entry 517B. The handwritten date is confirmed by the time/date stamp at the end of the cable.