Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to Rear Admiral Herbert O. Dunn, Commander, Azores Detachment
To: Senafloat, Ponta del Gada. October 22, 1918.
1353. Department desires to be prepared to send seaplanes to Europe by air. First flight may be undertaken next May. Route under consideration is from Newfoundland to the Azores, thence to Portugal. Landing places desired in the Azores, one as far west as possible and another in one of the Eastern Islands. These landing places should afford sufficient water for safe maneuvring of F-5 type seaplanes with maximum load, sufficient depth of water for a destroyer or sea-going tug, and cable or long distance radio communication. Horta and Ponta del Gada appear to fulfill these requirements. Please investigate thoroughly and, if practicable, submit definite recommendations together with detailed descriptions and such photographs as would assist in identification from seaward. This entire project will be considered absolutely secret. Your recommendations together with photographs should be sent to Navy Department and copies to this office.
Source Note: Cy, DNA, RG 45, Entry 517B.