Dear community,

I have been playing my US APA ship (Randall) in Occupation game mode. I have a Hero Boosted lvl 82 sonarman on support slot. The ship is a CL, so it can use sonar with a sonarman on the support slot in theory. I was not in overheat when a sub surfaced right beside me. Never seen him under the water although I have sonarman with good range and the right class of ship to use sonar. Can someone please explain why my sonar wasn't working? Oh yeah the FCS I am using is DD FCS 1 (Aiming)