List of submarines by upgraded maximum stats/New

Highlight notes:

• Green: Outstanding
• Yellow: Above average
• Since the Luck Stat is difficult to modernize, it is listed as Base(Max).

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No.	Name	Class															Notes
123	I-19 伊19 Iku イク	Junsen B	-	9	79	0	0	39	12(49)	14	18	36	Slow	0	10	20	Remodels into SSV
126	I-168 Kai 伊168改 Imuya イムヤ	Kaidai VI	50	11	69			29	10(49)	15		49
127	I-58 伊58 Goya ゴーヤ	Junsen B K2	-	9				39	40(79)	14	19	36					Remodels into SSV
128	I-8 伊8 Hachi はち	Junsen 3							20(59)	15		37
163	Maruyu Kai ゆ⃝改	Type 3 S.T.V.	20	5	19			19	7(77)	7	11	29				10
231	U-511 Kai U-511改 Yuu ユー、さつき1号	Type IXC	35	12	64			29	34(67)	13	20	59				20
236	Ro-500 呂500 Ro ロー	Ro-series	55	13	69			34	44(77)	13	21	68					U-511 second remodel
No.	Name	Class															Notes
Submarine Subclasses SSV: Aircraft Carrying Submarine Aircraft Carrying Submarines are counted as Submarines for Expeditions and map branching. Therefore highlights are with respect to the whole table including Aircraft Carrying Submarines.
No.	Name	Class															Notes
123	I-19 Kai 伊19改 Iku イク	Junsen B (SSV)	50	12	89	0	0	39	13(59)	18	19	49	Slow	2 (1,1)	10	25
127	I-58 Kai 伊58改 Goya ゴーヤ	Junsen B K2 (SSV)			84				50(79)			49
128	I-8 Kai 伊8改 Hachi はち	Junsen 3 (SSV)		14				39	25(69)	19
155	I-401 Kai 伊401改 Shioi しおい	Sentoku Type (SSV)	35	19	80			45	20(59)	24	24	44		6 (3,3)	25	30	Buildable via LSC
No.	Name	Class															Notes

• Submarines can only be attacked by destroyers, light cruisers, torpedo cruisers, aviation battleships/cruisers with seaplane bombers, and some light aircraft carriers. In addition, they are prioritized to attack submarines first, meaning other ships can get away with no damage done to them.
• Submarines are the most resource-efficient class in the game; they cost almost nothing to deploy or repair. Furthermore, they constitute cheap additions towards multiple expeditions that can utilize them.
• Submarines equipped with Kouhyouteki will perform a preemptive torpedo strike before the shelling phase. After reaching level 10, they'll be able to preemptively attack without any equipment at all.
• SSVs have doubled repair time compared to SS. I-58, I-8 and I-19 turn into SSV after remodelling. I-168, U-511 and Maruyu do not turn into SSV after remodelling, so they can always be remodeled without worrying about increased repair times.