Talk:Type 4 Passive Sonar/@comment-29843077-20161215110346/@comment-232062-20161216000143

I dropped that link to reinforce what 85.233 said about oasw and illustrate the various combinations of ships and asw setups, not only base asw stat but being able to oasw with as few slots used as possible leaving room for other gear which might be usefull in any number of circumstances.

A maxed T3 is not necessarily the same in terms of asw as a T4.

Combat/Main

"The opening anti-submarine attack (OASW) can be performed by any ship with displayed ASW value of 100 or greater (ship's ASW stat + equipment ASW, not counting equipment  improvements) and at least one  sonar."

"it's  not easier to achieve OASW cause 12*3=36, at least you need 100-36=64 asw on DD"

64 base asw is correct when using 3 T4s but you would need a base of 70 when using T3s... it does make a difference, and it does make it easier.

User blog:Shagohod7/List of required levels to reach 100 ASW (DDs+CLs) is missing newer girls but it does clearly show how many girls would be incapable of oasw without the use of one or more T4s.

If you really want to agonize over 1-2 points of accuracy, work your way through the math and figure out how much of a difference it really makes. Accuracy and Evasion It's likely that any difference would be imperceptible in terms of typical gameplay largely because asw plays only a minor role in the game (inside and outside of events).

The reason I didn't bother to reply to the question in your op is because anecdotal evidence dosen't really mean dick, and I wouldn't lend much weight to anyone's claims that they "notice a difference".