Adding bases for refuelling only?

[GerritJ9]

Is it possible to add bases where only refuelling is possible, rather than full facilities such as Manila, Soerabaja and Fremantle? I'm thinking of places such as Darwin, which undoubtedly would have been available for refuelling should the need have occurred. Also places such as Tarakan and Balikpapan, which were used as refuelling stations by the RNethN pre-war and could have used by the USN until the Japanese occupied them.
I recently lost a lot of fuel to a Japanese attack during an otherwise quite successful campaign patrol and the nearest Allied port was Darwin, which I just managed to reach........ but since refuelling is not possible there, I had to replay the mission, losing all kills- hence my question.