German submarine U 52 under repair at the Kaiserliche Werft, Kiel, Germany in 1918

A list dealing dated 23 June 1918 reported the status of work on the submarines expected on 23 June. Work started on 20 June 1918. Planned completion on unknown. Description of the work tank damage. Remarks scope of work unknown.

Source

Bundesarchiv RM 3-11254.