In the late 60s/early 70s there were three squadrons of nine Victor K1/K1a tankers, plus four B1a's on the OCU which could be quickly converted to 2 point tankers if required. That made a possible 31 aircraft, although of course the fuel uplift available was considerably lower than that of the 24 K2s, (particularly when flying out of Masirah in the afternoon
).