What about the Guppy class?

[CCIP]

Originally Posted by Keyne

So they basically upgraded the Gato, Baleo, Tench submarines? Cool, then any of those in the game would be physically similar but have system upgrades after the war. Based on the Guppy program info are the US subs in the pacific theater in WWII less advanced than the U-boats in SH4??

Yep, they're the same fleet boats of the game.

They're certainly less advanced than the Type XXI, but that isn't saying much since the XXI never made it into real service.

Otherwise, it's hard to say. German boats had better depth and manuevering performance - but American boats had far better electronics, including excellent radar and more sophisticated controls. Overall I would say the technology level of American fleet boats was definitely above primary German war boats (Type VII, Type IX) - but remember that they were very different in their design philosophy. I think American techology gave them an edge for the type of war they were fighting. (may not have were they fighting the same kind of sub war as the Germans)