Seaton Carew II Marine Operations Station
Location : South-East of Hartlepool
OS Ref : NZ 533 268
There were actually two Seaton Carew locations, a landplane station and a seaplane one. The two locations were less than a mile apart and were know as Seaton Carew I & Seaton Carew II resp. Being a seaplane base the Seaton Carew II site only occupied 7 acres of land and was in operation between October 1917 and May 1919.hangarage was provided by a single Seaplane shed measuring 120 x 60 feet plus two Bessonneau hangars.
| Unit | Arrived From | Arrival Date | Dept Date | Departed To | Aircraft |
| War Flt RNAS/RAF | South Shields (Detachment) | 09/1917 | 25/05/1918 | (Re-designated 252Sqn 451/452 Flts) | |
| 252Sqn 451 Flt | (Formed from existing War Flt) | 25/05/1918 | 15/08/1918 | (Re-designated 246Sqn 451 Flt) | |
| 252Sqn 452 Flt | (Formed from existing War Flt) | 25/05/1918 | 15/08/1918 | (Re-designated 246Sqn 452 Flt) | |
| 252Sqn 402 Flt | (Formed) | 30/06/1918 | 15/08/1918 | (Re-designated 246Sqn 402 Flt) | |
| 246Sqn 402 Flt | (Formed from existing 252Sqn 402 Flt) | 15/08/1918 | 24/03/1919 | (Disbanded) | |
| 246Sqn 403 Flt | Killingholme | 15/08/1918 | 31/05/1919 | (Disbanded) | |
| 246Sqn 451 Flt | (Formed from existing 252Sqn 451 Flt) | 15/08/1918 | 10/10/1918 | (Disbanded) | |
| 246Sqn 452 Flt | (Formed from existing 252Sqn 452 Flt) | 15/08/1918 | 31/10/1918 | (Disbanded) |