I don't know if it is just me or not. I have found certain ships AOB calculations are accurate using RAOBF only and certain ships AOB calculations are accurate based on formulas provided in
http://www.tvre.org/en/acquiring-torpedo-firing-data.
Distance is 99% spot on it is just the visible length and horizontal degree tics that's driving me crazy.
Sometimes the horizontal degree tics length used in RAOBF can generate accurate AOB but sometimes same degree tics length cannot and it may be accurate if use formulas to calculate.
Very frustrated.