Berehaven is a port situated at the southwest corner of Ireland. A minor British naval base in the Great War, it is now called "Castletownbere".
Berehaven functioned as a sub-base to Auxiliary Patrol Area XXI, which was primarily based in Queenstown. The headquarters ship was Colleen.
- Commander (retired) Odiarne U. Coates, mid November, 1915 – 27 May, 1917
- Commodore, Second Class Hugh L. P. Heard, 23 April, 1917 – 16 January, 1919
- Acting Commander John May, 3 August, 1920 – 9 October, 1922 (and as King's Harbour Master, Berehaven)
- ↑ Heard Service Record. The National Archives. ADM 196/43. f. 84.