List of submarines by upgraded maximum stats/New

For a sortable table, see /Sortable.

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
126	I-168 Kai 伊168改 Imuya イムヤ	Kaidai VI (SS)	50	11	69	80	0	0	29	10(49)	15	18	49	Slow	0	10	20
128	I-8 伊8 Hachi はち	Junsen 3 (SS)	-	9		78			39	20(59)		19	37					Remodels into SSV
123	I-19 伊19 Iku イク	Junsen B (SS)			79	88				12(49)	14	18	36
283	I-26 伊26 Nimu ニム				75	84				14(51)			37
436	I-47 Kai 伊47改 Yona よな	Junsen C (SS)	50	12	88	100			30	50(97)	18	21	50				25
127	I-58 伊58 Goya ゴーヤ	Junsen B K2 (SS)	-	9	69	78			39	40(79)	14	19	36				20	Remodels into SSV
163	Maruyu Kai ゆ⃝改	Type 3 S.T.V. (SS)	20	5	19	24			19	7(77)	7	11	29				10	Buildable via LSC Can be used for Luck Modernization.
231	U-511 Kai U-511改 Yuu ユー、さつき1号	Type IXC (SS)	35	12	64	76			29	34(67)	13	20	59				20
236	Ro-500 呂500 Ro ロー	Ro-series (SS)	55	13	69	82			34	44(77)	13	21	68					U-511 second remodel
325	Luigi Torelli Kai Luigi Torelli改	Guglielmo Marconi (SS)	30	8	32	40	22		28	30(72)		18	56				15
329	UIT-25		40	12	36	48	25		30	35(77)		19	62				20	Luigi Torelli second remodel
330	I-504 伊504		55	15	68	83	28		32	40(85)	14	21	64					Luigi Torelli third 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
294	I-13 Kai 伊13改 Hitomi ひとみ	Junsen A K2 (SSV)	45	16	72	88	0	0	43	8(48)	21	22	47	Slow	3 (2,1,0)	25	25	3 equipment slots.
295	I-14 Kai 伊14改 Iyo いよ			12	68	80			44	24(77)	22	23	53
293	I-400 Kai 伊400改 Shion しおん	Sentoku Type (SSV)	37	20	82	102			46	19(58)	24	24	43		6 (3,3)		30
155	I-401 Kai 伊401改 Shioi しおい		35	19	80	99			45	20(59)			44
128	I-8 Kai 伊8改 Hachi はち	Junsen 3 (SSV)	50	14	84	98			39	25(69)	19	19	49		2 (1,1)	10	25
123	I-19 Kai 伊19改 Iku イク	Junsen B (SSV)		12	89	101			39	13(59)	18		49
283	I-26 Kai 伊26改 Nimu ニム				86	98			41	16(66)			52
127	I-58 Kai 伊58改 Goya ゴーヤ	Junsen B K2 (SSV)			84	96			39	50(79)			49
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 prioritize attacking 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, I-26, 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.