Ciao Yoyo!
Your photo (showing All Saints Church Frindsbury) is to the east of Rochester Bridge. My two 'runways' are to the west.
Shorts S23 Empire Flying Boat G-ADHL 'Canopus' gathers speed on the River Medway for take off on its first official flight on 4th July 1936
'Canopus' taking off from Rochester
The above photos of G-ADHL places the take-off run at the end of my easterly runway meaning they used part of the river curve before joining up with the westerly 'runway' portrayed in my aerial view.