Not buildable. Ships receive a boost of 15% more ASW firepower when this is used together with a depth charge launcher or depth charge, and 143% more power when all three types are used (must be on the same ship)
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Rank Reward for August 2015. Quest reward from the [[Seasonal/Saury 2015#Saury Quests|Saury 2015 Seasonal Event]].
Rank Reward for August 2015. Quest reward from the [[Seasonal/Saury 2015#Saury Quests|Saury 2015 Seasonal Event]].
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Type 93 sonars can be upgraded to this in [[Akashi's Improvement Arsenal]]