:Ships receive a boost of +15% ASW firepower when this is used together with a SONAR, +10% when used with only a depth charge launcher, and +43% when all three types are used (must be on the same ship).
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:Ships receive a boost of 15% more ASW firepower when this is used together with a [[:Category:SONAR|SONAR]], 10% when used with only a [[:Category:Depth Charge Projectors|depth charge projectors]], and 43% more power when used with both a [[:Category:SONAR|SONAR]] and a [[:Category:Depth Charge Projectors|depth charge projectors]] (must be on the same ship). The 43% bonus does not apply when combined with any of the [:Category:Special Depth Charge Projectors|special DCPs]]. Only the 15% bonus will apply.
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:Clear reward from [[Spring 2017 Event]] E1 and E5.
:Stock equipment of [[Shimushu|Shimushu Kai]] and [[Etorofu|Etorofu Kai]].
:Stock equipment of [[Shimushu|Shimushu Kai]] and [[Etorofu|Etorofu Kai]].
:Quest reward from [[Quests#Bm8|Bm8]], [[Quests#C37|C37]], [[Quests#C43|C43]], and [[Quests#D26|D26]].
:Quest reward from [[Quests#Bm8|Bm8]], [[Quests#C37|C37]], [[Quests#C43|C43]], and [[Quests#D26|D26]].