Radar Equipment Mast (Type 13 Kai + Type 22 Radar Kai 4)
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No.506 電探装備マスト(13号改+22号電探改四)
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 Small Radar (Air Radar)Effects:
 +4  +2  +6  +2  +5Scrap value:
 18  25 (Unbuildable) | |
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| Refittable Ship Types | |
| 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 |
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Introduction
緒戦では軍上層部に軽視される傾向のあった電探装備ですが、戦いの後半では、全ての艦艇にとって、かなり大切な装備となっていきます。
特に比較的小型である程度の実用に耐えた13号電探と22号電探は、大戦後期まで生き残った駆逐艦のマストや大型艦艇などにも装備され、日本海軍艦艇の数少ない実用的な電波の目として、劣勢な戦局を支えていきます。
In the early stages of the war, the RADAR tended to be neglected by the upper echelons of the military, but in the latter part of the war, it became a very important piece of equipment for all ships.
In particular, the type 13 and type 22 radars, which were relatively small and have endured practical use to some extent, were equipped on the masts of destroyers and larger ships that survived until the latter half of the war, and were some of the few practical radio signals used by Japanese ships, that would support the lower battlefield as eyes.
Mechanics
Radars are used to provide boosts to LoS 
and accuracy 
. They are additionally used for:
- Certain Artillery Spotting,
- Certain Night Cut-Ins,
- Maelstrom resource loss mitigation,
"Dual Purpose Radars" are radars that are both Surface Radars and Air Radars.
SurfaceSurface Radars are radars that:
- Must have 5 or more LoS ,
- Are required for some Routings,
- Metigate the accuracy penalty of Smoke Screens,
- Increase the damage potential of most Special Attacks.
Air Air Radars are radars that:
Can be equipped in the RE of certain ships.
Notes
How To Obtain
Stock equipment of: Shigure Kai San
From quest: B192 (★+1, choice)
Event reward for:
- Summer 2023 Event E-3: Hard (★+1)
Updates History
- 2023-06-14: Implemented
Fit Bonuses
| Radar Equipment Mast (Type 13 Kai + Type 22 Radar Kai 4) Equipment Bonuses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Ship | Extra Requirement | 
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Note | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Shigure Kai San
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(1st equipped) | +2 | +2 | +3 | +4 | One-time | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Shiratsuyu Kai Ni Shigure Kai Ni  Harusame Kai Ni  Yukikaze Kai Ni  Amatsukaze Kai Ni  Isokaze B Kai  Hamakaze B Kai 
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(1st equipped) | +1 | +1 | +2 | +3 | One-time | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ushio Kai Ni Hibiki Kai / Verniy   Hatsushimo Kai Ni  Kasumi Kai Ni /B   Asashimo Kai Ni  Kiyoshimo Kai Ni /D   Suzutsuki Kai  Fuyutsuki Kai 
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(1st equipped) | +1 | +1 | +1 | +2 | One-time | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Air Radar Type Equipment Bonuses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Ship | Extra Requirement |
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Note | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Shigure Kai San Amatsukaze Kai Ni Akigumo Kai Ni  Okinami Kai Ni 
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- | +1 | +2 | +3 | One-time[1] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Kiyoshimo Kai Ni /D
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- | +2 | +1 | One-time[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- ↑ 1.0 1.1 Shared with all Air Radars
Improvement
Improvement  effects
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| Small
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1★ | 2★ | 3★ | 4★ | 5★ | 6★ | 7★ | 8★ | 9★ | Max★ |
| [math]\displaystyle{ \text{AdjAA}_\text{fleet} }[/math] | 1.50 | 2.12 | 2.59 | 3.00 | 3.35 | 3.67 | 3.96 | 4.24 | 4.50 | 4.74 |
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1.25 | 1.76 | 2.16 | 2.50 | 2.79 | 3.06 | 3.30 | 3.53 | 3.75 | 3.95 |
| Day
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1.00 | 1.41 | 1.73 | 2.00 | 2.23 | 2.44 | 2.64 | 2.82 | 3.00 | 3.16 |
| Night
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1.60 | 2.26 | 2.77 | 3.20 | 3.58 | 3.92 | 4.23 | 4.53 | 4.80 | 5.06 |