Talk:World 1/@comment-27500457-20161101181952/@comment-89.181.134.126-20161116112841

@Kimimado

Just as SunnyTTK said. In a previous update, an opening ASW mechanic was implemented. It triggers before the opening torpedo phase (RIP Oscar). Isuzu Kai Ni is always able to do it no matter what. For all the other ASW capable ships, they need at least 100 ASW stat and a sonar equipped. Only the base ship and the base equipment stats are counted towards this. Any hidden stats gained from Akashi improvements are ignored, so a T3 Sonar 0* and a T3 Sonar 9* will give the same ASW stat towards the OASW trigger.

As a rule of thumb, if an ASW capable ship is able to achieve 72 ASW without equips, she'll do OASW with 2x T3 Sonar + T3 DC (100 ASW). The minimum would be base 68 ASW, for 2x T4 Sonar + T3 DC, but T4 Sonars are not easily acquired. This is valid for DDs and CLs, check their respective maximum stats pages to see who qualifies for OASW duty. For 4-slotters, it gets easier because they can mount an extra sonar.