Can a sub surprise strike another sub? Yes
Subs can use its surprise strike another sub and they both fire in step 2. However if the attacker hits the defending sub 1st the defending sub is moved to the casualty strip gets to fire back and is not eliminated until the end of step 2.
So in that case a surprise strike from one sub to another is pretty pointless then?
And to take out a battleship, I would need to surprise strike with at least 2 subs and them hitting to prevent the battleship firing back?
PS : You previous post quoted me but had no answer?