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! rowspan="4"|{{SubmarineRadar}}{{EquipmentLink|Late Model Radar & Passive Radiolocator + Snorkel Equipment}}
| style="text-align:left;" | '''(★3-4)'''
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| style="text-align:left;" | '''(★5-9)'''
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| style="text-align:left;" | '''(★MAX)'''
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| style="text-align:left;" | '''(★2-MAX) + {{EquipmentLink|Skilled Sonar Personnel + Late Model Bow Torpedo Mount (4 tubes)|text=★4+ Skilled Sonar Personnel + Late Model Bow Torpedo Mount (4 tubes)}}'''
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| style="text-align:left;" | One-time
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