Zuiun (631 Air Group)
Auspicious Clouds (631 Air Group)
|Coastal Defense Ship||Destroyer|
|Light Carrier||Standard Carrier|
|Armored Carrier||Seaplane Tender|
|Submarine||Aircraft Carrying Submarine|
|Submarine Tender||Fleet Oiler|
|Repair Ship||Amphibious Assault Ship|
Multi-purpose recon seaplane "Zuiun" that is capable of performing sudden dive-bombing attacks.
The 631st Naval Air Group utilizing as a submarine launched seaplane group to operate the expensive, high performance attack aircraft "Seiran". This "Zuiun" used by the 631st for training.
- December 2016 Ranking Reward for all tiers.
- Winter 2017 Event E-1 Normal/Hard reward.
- April 2017 Ranking Reward for all tiers.
- March 2018 Ranking Reward for all tiers.
The 631st Naval Air Group used the Zuiun as a training aircraft until the arrival of the Seiran (This is demonstrated by the use of orange paint normally used by aircraft like the Prototype Nanzan, which served as a training plane to aid pilot conversion to the Seiran, and the arrows carried by Houshou indicating her role as a training ship).