Talk:Experience and Rank/@comment-24702213-20150318111610/@comment-25284995-20150318141021

Firstly, sonar is so far different from hydrophone...

Hydrophone is just another passive sonar, like dipping a microphone in the water (you could get the idea now), can hear somethings in the water only. It cannot send any sound waves to the target(s) and wait the responding like the active sonar.

Normally, any active sonars from the late WWI-era were just called sonar only.

This item is a new hydrophone, passive sonar, in this game. Just call it "Type-0 Hydrophone", neh.

And the new item's advantages I found are...


 * Now CA, CV and BB (also Akitsu-Maru and Taigei, so trolling much...) can be equipped it but still cannot attack the subs, just ASW stat buffed.


 * CAV, CVL and BBV can be equipped, absolutely there is a big bonus in equipping it +11 factor is higher than Ka-type Observation Autogyro (+9) and Type 3 Spotter/Liaison (ASW) (+7).


 * This item has the same behavior like the Type 3 Spotter/Liaison (ASW), cannot attack the subs by equipped it only unless there is another ASW plane (eg: dive/torpedo/seaplane bomber, autogyro) also be equipped for CAV, CVL and BBV.


 * CLT, SS, SSV, Akashi and Katori cannot be equipped it.


 * CL and DD also cannot be equipped it too. lelz