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Type 4 SONAR

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Type 4 Passive Sonar

No.149 四式水中聴音機


Effects: Armor+1 Accuracy+1 Anti-Submarine+12

Scrap Value: Steel1 Bauxite3

Equipment Card Type 4 Passive Sonar.png

Equipment Character Type 4 Passive Sonar.png

Equipment Item Type 4 Passive Sonar.png

Equipment Full Type 4 Passive Sonar.png

Refittable Class
Coastal Defense ShipDestroyer
Light CruiserTorpedo Cruiser
Heavy CruiserAviation Cruiser
BattleshipAviation Battleship
Fast BattleshipLight Carrier
Standard CarrierArmored Carrier
Seaplane TenderSubmarine Tender
SubmarineSubmarine Carrier
Repair ShipTraining Cruiser
Fleet OilerAmphibious Assault Ship



This SONAR can be equipped on smaller ships, and is a new type of armament: the "passive SONAR." Compared to the type 93 SONARs, this has increased ASW. There are few of these because it was made in the later part of the war, and was equipped by some of the newer destroyers.


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)

Rank Reward for August 2015. Quest reward from the Saury 2015 Seasonal Event.

Type 93 sonars can be upgraded to this in Akashi's Improvement Arsenal

See Also