Air of Authority - A History of RAF Organisation
Coastal Command Group Dispositions - May 1941

| No 15 Group | No 16 Group | No 17 Group | |||
| 15A |
Aldergrove |
16A |
Bircham Newton |
17A |
Abbotsinch |
| 15B | Hooton Park | 16B | Detling* | 17B | Catfoss |
| 15C | Bowmere | 16C | North Coates | 17C | Chivenor |
| 15D | Port Ellen | 16D | Thorney Island | 17D | Detling* |
| 15E | Limavardy | 16E | Wattisham | 17E | Gosport |
| 15F | Lough Erne | 17F | Greenock | ||
| 15G | Oban | 17G | Silloth | ||
| 17H | Squires Gate | ||||
| 17J |
Wig Bay |
||||
| No 18 Group | No 19 Group | No 200 Group | ||
| 18A |
Dyce |
19A | St Eval | Gibraltar |
| 18B | Leuchars | 19B | Carew Cheriton | |
| 18C | Stornaway | |||
| 18D | Sullom Voe | |||
| 18E | Sumburgh | |||
| 18F | Thornaby | |||
| 18G | Wick | |||
| 18H | Helensburgh | |||
| 18J | Kaldadarnes (Iceland) | |||
| 18K | Reykjavik (Iceland) | |||
No 17 Group was the Coastal Command's Operational Training Group and therefore did not have any operational boundary.
*Detling was under the control of No 16 Group whilst housing units of No 17 Group.
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