Kaiboukan No.4

Info

437 第四号海防艦 (だいよんごうかいぼうかん) Kaiboukan No.4 Type D Kaiboukan Coastal Defense Ship HP 8→11 FP 3→15 ARM 4→15 TORP 0 EVA 39→79 AA 5→19 PLA 0 ASW 30→67 SPD Slow LOS 2→11 RGE Short LUK 18→76

Aircraft Equipment 0 Type 3 Depth Charge Projector -Locked- -Locked- -Locked- Modernization 0 0 1 0 Build Time 0:14 (Unbuildable) Remodel Req Consumption 10 10 Dismantle 1 1 1 0 Illustrator Hozuka Seiyuu Fujita Saki

437 第四号海防艦改 (だいよんごうかいぼうかんかい) Kaiboukan No.4 Kai Type D Kaiboukan Coastal Defense Ship HP 15→19 FP 4→28 ARM 5→29 TORP 0 EVA 49→91 AA 11→41 PLA 0 ASW 32→76 SPD Slow LOS 4→20 RGE Short LUK 20→81

Aircraft Equipment 0 12cm Single High-angle Gun Mount Model E 0 -Unequipped- -Locked- -Locked- Modernization 1 0 1 0 Remodel Level 35 Remodel Req 70 50 Consumption 10 10 Dismantle 1 1 2 0 Illustrator Hozuka Seiyuu Fujita Saki

Gameplay Notes

Coastal Defense Ships (DE) are weak ships with high ASW stat, utilizing ASW equipment. They:

• Can perform special OASW with lower ASW stat,
• Provide HP Modernization, Luck Modernization, or ASW Modernization,
• Cannot equip Engine Improvements, and so cannot be Speed Modded.

Special Mechanics

• None

Stats Exceptions

Base

• Has 1 equipment slot.

Kai

• Has 2 equipment slots.

Equipability Exceptions

DE	Default equipment compatibility
	✔️ Can Equip	❌ Cannot Equip
		Sp Recon Bomber
	Small Small	Sp Sp_Sec Sub Minisub Large Large Sp
		Medium Large Small Large
	RE:
	Notes: = ; = ; = ; = ; =Recon ; =Bomber ; Small= ; Medium= ; Sec= ; =

• Default DE equipment compatibility

Fit Bonuses

[edit]Kaiboukan No.4 Equipment Bonuses
Equipment	Extra Requirement									Note
Passive Radiolocator (E27) + Type 22 Surface Radar Kai 4 (Calibrated Late Model)	(1st equipped) (★0-6)					+1		+1	+1	One-time
	(1st equipped) (★7)					+1		+2	+1	One-time
	(1st equipped) (★8)					+1		+2	+2	One-time
	(1st equipped) (★9)	+1				+1		+2	+2	One-time
	(1st equipped) (★MAX)	+1				+1		+3	+2	One-time
	+ ★3+ 12.7cm Twin Gun Mount Model D Kai 2 OR ★3+ 12.7cm Twin Gun Mount Model D Kai 3	+1						+1		One-time
	+ ★3+ 12.7cm Twin Gun Mount Model D Kai 2 OR ★3+ 12.7cm Twin Gun Mount Model D Kai 3 + ★4+ Type 13 Air Radar Kai (Late Model)	+1		+4				+1	+3	One-time
Type 2 Depth Charge Kai 2	-				+1				+1
Ship-Type Bonuses
12.7cm Twin Gun Mount Model C Kai 3 H	+ Air Radar			+2					+2	One-time
	(2nd equipped) + Air Radar			+2						One-time
	(3rd equipped) + Air Radar			+2						One-time
12.7cm Single High-angle Gun Mount (Late Model)	(★7-MAX)	+1		+1
	(★7-MAX) + Surface Radar	+1							+4	One-time
5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37	-			+1					+1
12.7cm Single High-angle Gun Mount Kai 2	-	+1		+2
	+ Surface Radar	+1							+4	One-time
12cm Single High-angle Gun Mount Model E OR 12cm Single High-angle Gun Mount Model E Kai	-			+2	+1				+2
	+ Surface Radar	+2							+3	One-time
	+ Air Radar			+2					+3	One-time
12cm Single High-angle Gun Mount Model E Kai	(★1)			+1
	(★2-3)			+1					+2
	(★4-5)	+1		+1					+2
	(★6-7)	+1		+2					+2
	(★8-9)	+1		+2				+1	+2
	(★MAX)	+1		+3				+1	+2
Type 13 Air Radar Kai (Late Model)	-			+1			+1		+2
Type 2 Depth Charge	(★8-9)				+1
	(★MAX)				+2
Hedgehog (Initial Model)	(1st equipped)				+2				+1	One-time
Mk.32 ASW Torpedo (Mk.2 Thrower)	-								+1
Type 3 Depth Charge Projector Kai	(★0-5)							+1
	(★6-7)							+1	+1
	(★8-9)				+1			+1	+1
	(★MAX)				+1			+2	+1
2cm Flakvierling 38	(★4-6)			+1					+1
	(★7-9)	+1		+2					+1
	(★MAX)	+1		+3					+2
	(★4-MAX) + Air Radar			+1						One-time
3.7cm FlaK M42	(★6-7)			+1					+1
	(★8-9)	+1		+1					+1
	(★MAX)	+1		+1				+1	+2
	(★6-MAX) + Air Radar			+2						One-time
25mm Anti-aircraft Autocannon Mount & Machine Guns	-	+1		+1					+1

Auxiliary Requirements

Quest Requirements	Mandatory	Optional	Notes
	N/A	N/A

Equipment Improvement Helper
Improvement	N/A
Improvement & Upgrade	N/A

Drop Locations

Ship	Rarity	Type	No.	World 1						World 2					World 3					World 7					World 4					World 5					World 6					Remarks
				1	2	3	4	5	6	1	2	3	4	5	1	2	3	4	5	1	2	3	4	5	1	2	3	4	5	1	2	3	4	5	1	2	3	4	5
Kaiboukan No.4	Rare	DE	437																																					Unbuildable

Voice Lines

Quotes

Event	Japanese/English
Introduction Play	I'm the 2nd of the Type-D coastal defense ships that were created under the Maru-Sen Plan, Kaiboukan No.4. Yeah, you can call me... "Yotsu" instead. Happy to work with you, Admiral.
	マル戦計画で生まれた、丁型海防艦、その二番艦、第四号海防艦です。そうねぇ、「よつ」…って呼んでくれていいよ。提督、よろしくね。
Introduction Play	Born in Yokosuka, I'm the 2nd of the Type-D coastal defense ships, Kaiboukan No.4, or Yotsu. I'm feeling great today too! Admiral, let's work hard!
	横須賀生まれの、丁型海防艦、その二番艦の、第四号海防艦、よつ。今日も元気です！提督、頑張ろう！
Library Play	I'm the 2nd of the Type-D coastal defense ships that were created under the Maru-Sen Plan, Kaiboukan No.4. I may be tiny, but I did my very best in Yokosuka's defense, at the Marianas, and at the Ogasawara islands! Enemy submarines stand no chance. In the end, I worked hard at Ise Bay using this life Matsu saved.
	マル戦計画で生まれた、丁型海防艦、その二番艦、第四号海防艦です。 ちっちゃいけれど、ものすごく頑張りました！横須賀の防備や、マリアナや、小笠原。 敵の潜水艦だって、負けません。最後は伊勢湾、松にもらった命頑張りました。
Secretary 1 Play	Yeees, did you call?
	は〜い、よつ、呼んだ？
Secretary 2 Play	You have a job for me? You got it!
	よつのお仕事？ヤルヤル！
Secretary 3 Play	Big sis Matsu, good work. Are you feeling a bit stiff? I'm good at giving back rubs. Eh? Admiral, you're feeling stiff too? Alright, then I'll rub your back next.
	松の姉御、お疲れさまです。肩こってないですか？よつ、肩もみ上手なんですよ。えぇ？提督もこってるの？じゃあ、提督は、今度もんであげますね。
Idle Play	Ah, big sis Matsu, I'll go get some youkan and tea. The Admiral's here too? Oh well. Then we'll just split it between us!
	はぁ、松の姉御、よつ、羊羹とお茶持ってきますね。提督もいる？あ、そうか。じゃあ、よつのと、半ぶつです！
Secretary Married Play	Ad-mi-ra-l, how are you doing? You good? No? Heh, then I'll give you a back rub! Rub-a-dub-dub! Howssat?
	て・い・と・く、ど〜う？元気？そうでもない？ひん、じゃあ、よつが肩もんであげます！もみもみもみぃ〜。ど〜う？
Wedding Play	Admiral, did you call me? If you didn't I'm leaving. Eh, you did? ...Is this for me? Whoaaa!
	提督、よつ、呼んだ？間違いだったら戻るね。えぇ、間違いじゃない？…これ、くれるの？うひゃあぁ！
Looking At Scores Play	You want information? Please wait.
	情報ですね。お待ち下さい。
Joining A Fleet Play	Type-D coastal defense ship, Yotsu, sortieing.
	丁型海防艦、よつ、出撃します。
Equipment 1 Play	I'll equip this.
	積みますね。
Equipment 2 Play	I see, I see.
	うむ、うむ。
Equipment 3 Play	I managed somehow.
	なんとかなった。
Supply Play	Yees, thank you.
	は〜い、ありがとう。
Docking Minor Play	I'm going for a quick repair.
	ちょ〜こっと修理です。
Docking Major Play	I need some biiiiig repairs.
	ものすご〜く修理しないと。
Construction Play	Yees, it's done.
	は〜い、できました。
Returning From Sortie Play	We managed to make it back.
	なんとか戻ってこれました。
Starting A Sortie Play	Yokosuka Naval Base Picket Coastal Defense Ship, Kaiboukan No.4, feeling great!
	横須賀鎮守府警備海防艦、第四号海防艦、元気です！
Starting A Sortie Play	The star of the Ise Bay Maritime Squadron Task Force, Yotsu, feeling great!
	伊勢湾海上部隊、機動隊、その主力のよつ、元気です！
Battle Start Play	Oh no, it's the enemy! Enemy sighted!
	大変、敵だ！敵です！
Attack Play	Stay awaaaaay!
	こちくんな〜！
Air Battle/Daytime Spotting/Night Battle Attack Play	Let's get them!
	やつけろ〜！
Night Battle Play	Are we going to run them down? For real?
	深追いするの？本当に？
MVP Play	Yeees, was I the best? Whoo!
	は〜い、よつががんばちゃった？うひゃ！
MVP Play	Yeees, was I the best? I really get a commendation!?
	は〜い、よつががんばちゃった？感状！本当！
Minor Damage 1 Play	Whoaa!
	わあぁ！
Minor Damage 2 Play	Ow, that hurts!
	いたい、いたい！
Major Damage Play	Argggh, that did it. Aaah, I have to get back to port...
	がははぁ、くらった。うひゃぁ〜、港に戻らないと…
Sunk Play	No way... is this... the end for me... It can't be... Big siiiis...
	うっそ…よつ…ここで終わり…？うそだ…姉御ぉ〜…

Seasonal

Ship	Japanese/English	Notes
Autumn 2020 Play	Woohoo! I managed to get through summer! Now it's time for the Autumn Festival! It's the season for the Naval Base Autumn Festival! I'm really pumped for it!
	うひゃぁー！よつ、夏を乗り切った！これからは、秋祭り！鎮守府秋祭りの季節！よつ、元気出る出る！
Christmas 2020 Play	I really, really love this "Christmas"! The cake is delicious. Ah, big sis Matsu! Try some of thiiiis~! Wheee!
	よつ、このクリスマスって、好き好き！ケーキ、美味しい。あぁ、松の姉御！これ、食べてくださいぃ〜！うわぁ！
New Year 2021 Play	Happy New Year. Admiral, big sis Matsu, please take care of me this year too.
	あけまして、おめでとうございます。提督、松の姉御、今年もヨツをよろしくお願いします。
Setsubun 2021 Play	Demons begone! Fortune welcome! Who is our oni? Huh? The submarines? This will be a breeze. Here I gooo~!
	鬼は、外！福は、内！ヨツ達の、鬼は、誰？えぇ？潜水艦？ヨツ得意、得意！よーし！行くぞ〜！
Valentine's Day 2021 Play	Admiral, big sis Matsu, this is for you. Chocolate from me. It's lobster-flavored. Just kidding.
	提督、松の姉御、これ、あげます。ヨツの チョコレート。一世を風靡です。いざです。
White Day 2021 Play	Wahooo! I got some return gifts from the Admiral and big sis Matsu! Matsu, I'm going to eat the Admiral's gift. *nom* It's yummy! This is yummy!
	うひゃあぁ〜！提督と、松の姉御が、ヨツにお返ししてくれた！まず、提督の食べよ。はむ。美味しい！これ、美味しい！
8th Anniversary Play	It's the 8th Anniversary? Let me congratulate you too.
	八周年ですか？ヨツもお祝い申し上げます。
Rainy Season 2021 Play	It's really coming down. I wonder if the rain will stop soon... I know! Teruteru bouzu. Yotsu will make lots and lots! Yahoo!
	ジメジメ降ります。早く雨上がらないかなー…そうか！てるてる坊主。ヨツもいっぱい作ります！うひゃあ！
Summer 2021 Play	You know, when it gets hot... I don't really feel like doing anything. *flop flop* I'm just going to take a nap here.
	なんか、熱くなると…ヨツ、やる気なくなるんだよね〜。ふにゃふにゃ〜、ここで休んちゃうもんね〜。
Saury 2021 Play	Saury fishing? I know the coastal waters around here very, very well. We'll bring lots of lights to gather the fish. We don't... need depth charges?
	サンマ漁ですね？この辺の近海は、ヨツ大得意です。魚を集める光はいっぱい入りますね。爆雷は…いらない？
9th Anniversary Play	Uhya! Ninth~anni~versary! Yottsu, wishes everyone, the best!
	うひゃ！九～周～年！ヨッツも、一杯、お祝い、申し上げます！
Summer 2022 Play	Ngh, I don't really like this season... Urgh...
	ん～、この季節は…ヨッツ、ちょっと元気ない……むぅ～
10th Anniversary Play	It's finally the 10th Anniversary! I offer you my very, very most sincerest congratulations!
	ついに、十周年！ヨツもいっぱい、いーっぱいお祝い申し上げます！

Misc Lines

Ship	Japanese/English	Notes
Winter 2022 Event Play	Yotsu, acknowledging. I've come to help.
	ヨツ、了解です。お助けします。

CG

Regular
Base Base Damaged

Trivia

General Information

• Her nickname is Yotsu.
• She was launched on the 30th of December 1943.
• Sunk by Royal Navy aircraft at Toba, on the 28th of July 1945. Salvaged and scrapped on the 30th of June 1948.

Update History

• She was added on the 26th of June 2020 as Summer 2020 Event E4 drop.

See Also

• Wikipedia entry on Type D Class Coastal Defense Ship