Zuiun

[Edit] Zuiun Auspicious Clouds No.26 瑞雲
Seaplane Bomber Effects: +4 +2 +4 +1 +6 Combat Radius: 5 (Deployment Cost: 6) Scrap value: 2 3 5 (Buildable)
Refittable Ship Types
Fast Battleship	Battleship
Aviation Battleship	Standard Aircraft Carrier
Armored Carrier	Light Carrier
Heavy Cruiser	Aviation Cruiser
Light Cruiser	Torpedo Cruiser
Training Cruiser	Destroyer
Coastal Defense Ship	Submarine
Aircraft Carrying Submarine	Seaplane Tender
Fleet Oiler	Submarine Tender
Repair Ship	Amphibious Assault Ship
LBAS Plane

Introduction

水上偵察機を発展させ、急降下爆撃可能な水偵として開発された「瑞雲」。
空戦フラップまで装備した高性能な多用途機で、水上機母艦や、航空巡洋艦などからの運用も可能です。
「伊勢」型を改装した「航空戦艦」で集中運用、水上打撃機動部隊を編制するのも楽しいですよ！

Derived from floatplanes, Zuiun was developed as a reconnaissance plane able to dive-bomb.
Equipped with variable flaps, it is a very fine-tuned multirole aircraft, and is able to be used on seaplane tenders or aircraft-carrying cruisers.
It's also fun to group an aircraft-carrying battleship division, mounting it on aircraft-carrying battleships which are modified Ise-class. 

Mechanics

Seaplanes are the main aircraft type used by non-carrier ships (mainly battleships, cruisers, and auxiliaries).

• They are notably required to trigger Artillery Spotting.

Bomber Seaplane Bombers additionally act like Dive Bombers, taking part in the same air phases and sharing the same damage formulas. Additionally, they:

• Play some minor Anti-Installation role.
• Bring an accuracy bonus against PT boats.

Zuiuns are additionaly required for the Ise-class Kai Ni
to perform special Zuiun cut-in attack (see Artillery Spotting for more details).

Notes

Not to be confused with other aircraft of this family (see here).

How To Obtain

Buildable

Stock equipment of: Chitose Kai, Chiyoda Kai, Fusou Kai, Hayasui, Hyuuga Kai, Ise Kai, Kumano Kai, Mikuma Kai, Mogami Kai, Suzuya Kai, Yamashiro Kai

From quest: C22 (x2, choice)

From limited-time quest: SB34 (x4, choice)

Uses

Used to improve: Zuiun, Type 0 Observation Seaplane, Zuiun (634 Air Group), Zuiun Model 12, Zuiun Model 12 (634 Air Group), Ar196 Kai, Ro.43 Reconnaissance Seaplane, Ro.44 Seaplane Fighter, Type 2 Seaplane Fighter Kai, Laté 298B, Shiden Model 11, Ro.44 Seaplane Fighter bis, Type 2 Seaplane Fighter Kai (Skilled), Zuiun (634 Air Group/Skilled), S9 Osprey, Zuiun Kai Ni (634 Air Group), S-51J, S-51J Kai, Swordfish Mk.III Kai (Seaplane Model), Type 99 Dive Bomber Model 22 (Skilled)

Used by quest: F51, F52, F58, F85, F86, F87, F101

Updates History

• 2013-04-23: Implemented with initial game release
• 2013-11-01: Stats increased: +1 → +2
• 2013-12-24: Stats increased: +2 → +4
• 2017-06-23: Became improvable and upgradeable to Zuiun (634 Air Group)
• 2021-03-30: Became upgradeable to Zuiun Model 12

Fit Bonuses

Zuiun Equipment Bonuses
Ship	Extra Requirement									Note
Mogami Kai Ni /Toku Yahagi Kai Ni /B	-			+1					+1
	(1st equipped)	+2								One-time
Noshiro Kai Ni	(1st equipped)	+2							+1	One-time
Mikuma Kai Ni /Toku	-			+1					+1
	(1st equipped)	+1								One-time

Seaplane Bomber Type Equipment Bonuses
Ship	Extra Requirement									Note
Noshiro Kai Ni Yahagi Kai Ni /B	(1st equipped)	+1			+1				+1	One-time
Mogami Kai Ni /Toku Mikuma Kai Ni /Toku	(1st equipped)	+1							+1	One-time

Improvement

Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	Zuiun	0	160	160	0	360	5/7	3/4	1x	I H	M	M	M	M	I H	I H	Mogami Kai (only) Ise Kai Hyuuga Kai	Ise Kai Ni and Hyuuga Kai Ni can NOT improve this equipment. Upgrades to Zuiun (634 Air Group)
		6					6/9	5/7	1x
		10					16/24	7/10	2x 1x
		0					{{{Fuel:2}}}	{{{Ammo:2}}}	{{{Steel:2}}}	{{{Baux:2}}}	5/7	3/4	1x	X	M2	M2	M2	M2	X	X	Mogami Kai Ni/Toku	Upgrades to Zuiun Model 12
		6									6/9	5/7	1x
		10									?	7/9	2x 1x

Improvement effects
Bomber	1★	2★	3★	4★	5★	6★	7★	8★	9★	Max★
	0.2	0.4	0.6	0.8	1.0	1.2	1.4	1.6	1.8	2.0
	1.2	1.69	2.07	2.40	2.68	2.93	3.17	3.39	3.60	3.79

Trivia

Although quite obscure in-game, the Zuiun (along with the Mitsubishi F1M2) represented the pinnacle of Japanese floatplane development. This was a result of Japan's obsession with multi-role floatplanes which arose from battles with Chinese forces during the 1930s. It was initially intended to be carried by cruisers and carry out preemptive strikes on enemy aircraft carriers to secure air superiority, as the Japanese Navy disliked placing reconnaissance aircraft on aircraft carriers, which took up valuable space needed for fighters and attack aircraft (this was the reason that the Mogami was fitted with a floatplane deck). The Zuiun was equipped with 2x 20 mm guns, 1x 13 mm gun, and was able to carry a single 250 kg bomb. It was also fitted with dive brakes similar to the German-designed Ju-87 Stuka. Moreover, it could fly as far as Zero fighters (about 2500 km), and was ridiculously fast as a floatplane at 448km/h. Like many other Japanese aircraft, it never saw its full potential exhibited as a result of a delayed development schedule and Japan's dwindling production capabilities as the war progressed.

See Also

Aichi E16A