That about "transit" is true
, but in this peculiar case I used the "transit" tactic. (As far I can remember...) Nevertheless, I finally had to re-write the mission, with the sub sinking as a part of the mission.
It sure would be nice to be able to truly force the units to do something, but after some testing it usually is possible to find a (some sort of) working solution.
And thanks to LwAmimod, the AI units no longer need that much guidance.
Miika