Scope and Content

Keyes Papers. Vol. cxxix. ZO operational orders, reports, and casualties; 7 April 1918– 23 April 1931, n.d.


1. Memorandum on the object of the operation, issued by Keyes ‘to all Ranks concerned’; 7 April 1918.

2. Operational orders; [April 1918]. Contains orders for fleet movements, a timetable for the operation, orders for smoke-screening, instructions on reporting wind speed and direction, a meteorological report, a summary of vessels in the main force, and orders on long-range and aerial bombardment of Zeebrugge in the hours ahead of the fleet reaching Zeebrugge and Ostend.

3. Texts of telegrams reporting progress of the operation; 23 April 1918.

4. Operation ZO reports; 24 April – 16 June 1918. Partly printed. Contains Keyes’s draft official report on the operation to the Admiralty; Admiralty minutes re. publication of the report; details of German U-boat usage of the Dover Straits in 1918; and reports from individual vessels involved in the raid.

5. Lists of seamen killed, injured, or missing; 24 April – 9 March 1918.

6. Texts of congratulatory telegrams, including telegrams received on the 13th anniversary; 23 April 1918 – 23 April 1931, n.d. Partly printed.

7. Intelligence reports on the outcome of Operation ZO; 24 April – 10 May 1918.

Conditions Governing Access


Not Public Record(s)

Conditions Governing Use

Crown Copyright and provided under an Open Government Licence.

Custodial History

Crown Copyright and provided under an Open Government Licence.