I'm trying to choose between 3 specializations for a certain tech: +2 tactical repair / +20% ship hp /-20% ship logistics cost.
I have no idea how to evaluate how good a free +2 to tactical repair is on all ships that I build, compared to the other two options.
As a wild-ass guess I imagine that every time interval (length unknown to me) your ship heals a number of hp = it's tactical repair total (so 2 hp from this particular tech). I don't know if the hp repaired is affected by hull size or not, either.
Does anyone know *precisely* how tactical repair works and how useful it is?