Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to the Office of the Chief of Naval Operations
Subject Copy. File No. <4-6-5>
CABLEGRAM SENT August 25, 1918 JCM
To Opnav. Washington Serial No. 3545
Prep.by A-1 SX D.R.
S E C R E T
3545 Operations covering period of four mo<n>ths have demonstrated absolute unsuitability of Dunkirk as seaplane base. Manipulation of seaplanes in the small and congested harbor extremely hazardous and inventory of our casualties condemns Dunkirk from this point of view. Both British and French have experienced same trouble on larger scale.
Strongly recommend that for this station there be substituted DH-4s in addition to those now allocated to Northern Bombing Group as they become available for this purpose to be operated from the Northern Bombing Group Flying Fields. These aeroplanes to have same mission as seaplanes in patrolling off Belgian Coast and in Dover Straits.
If Liberty Fighter H. <A>. materializes it might be used to good advantage from Killingholme or similar station possessing better harbor facilities 111025 3545
Source Note: Cy, DNA, RG 45, Entry 517B. Note handwritten between end of text and signature: “Ref: Cable sent out Sept.10. asking reply to this.”