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Submarine Radar & Passive Radiolocator (E27)

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No.211 潜水艦搭載電探&逆探(E27)
Submarine Radar Icon.png Submarine Equipment
Effects: Firepower+1 AA+1 Accuracy+3 Evasion+11 LoS+5
Scrap value: Steel 13 Bauxite 15 (Unbuildable)

Equipment Card Submarine Radar & Passive Radiolocator (E27).png

Equipment Character Submarine Radar & Passive Radiolocator (E27).png

Equipment Item Submarine Radar & Passive Radiolocator (E27).png

Equipment Full Submarine Radar & Passive Radiolocator (E27).png

Refittable Class
Coastal Defense Ship Destroyer
Light Cruiser Torpedo Cruiser
Heavy Cruiser Training Cruiser
Aviation Cruiser Fast Battleship
Battleship Aviation Battleship
Light Carrier Standard Aircraft Carrier
Armored Carrier Seaplane Tender
Submarine Aircraft Carrying Submarine
Submarine Tender Fleet Oiler
Repair Ship Amphibious Assault Ship



Equipment that is mounted on submarines and used to search for enemies as well as to conduct surface reconnaissance.
Several excellent water-resistant telescopes that are primarily mounted on top of the bridge, surface radars and anti-air radars, not to mention the very useful E27 radar, are used for attempts at early detection of threats or targets.


Can be used together with late-model submarine torpedoes to trigger Night Cut-Ins that have higher damage modifiers than the usual Torpedo Cut-In.

Torpedo Cut-In modifiers
Attack Type Prerequisites Notes Pre-cap
Submarine Cut-ins Late Model Submarine TorpedoesSub_LM Submarine Equipment With Late-Model Sub Torps ONLY 1.75 ? 2
Late Model Submarine TorpedoesSub_LM Late Model Submarine TorpedoesSub_LM 1.6

Can be equipped in the RE.


How To Obtain

Stock equipment of: I-13 KaiI-13 Kai

Upgradeable from: Submarine Radar & Waterproof TelescopeSubmarine Radar & Waterproof Telescope

Ranking reward for:

  • Apr 2018: 1-5, 6-20
  • Jul 2020: 21-100

Updates History

  • 2017-02-12: Implemented
  • 2020-06-26: Became possible to equip in expansion slots
  • 2023-11-02: Became improvable


Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Submarine Equipment Submarine Radar & Passive Radiolocator (E27) 0 90 100 120 190 22/26 8/9 1xSubmarineRadar.png  
X X X 400
I-400 KaiI-400 Kai
I-401 KaiI-401 Kai
6 ? ? ?
10 - - -
Improvement Improved effects
Submarine Equipment 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★

See Also