Changes

'''Used to improve''' {{Equipment/Link|Type 93 Passive Sonar}}, {{Equipment/Link|Type 4 Passive Sonar}}

'''Used to improve''' {{Equipment/Link|Type 93 Passive Sonar}}, {{Equipment/Link|Type 4 Passive Sonar}}

'''Used by quests: '''[[Quests#F50|F50]]

'''Used by quests: '''[[Quests#F50|F50]], [[Quests#F98|F98]], [[Quests#F99|F99]]

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