I’m feeling lazy about looking this up (and it’s more likely in errata anyway).
But my understanding is that when destroyers are not present and subs and fighters are involved, you need to roll your surface ships separate from your aircraft. For instance, the following screenshots is incorrect …
I know we have more Official Rules Experts than, you, @kreighund but I’d like you to chime in on this one before I send it off to Beamdog. Thanks!
Yes, that’s correct. Whenever you have a situation like this, where some units are incapable of hitting others, you need to roll for them separately.