Torpedo spares, external

[Trevally.]

Originally Posted by jason210

I'm not even sure which boat I have, though going on what you said it must be a VIIA.

It indicates with text that there is external storage on the sub-systems, but there are no slots there.

Is it possible to chnage it in the middle of a campaign?

The more tonnage you sink the sooner you will get a new boat.
By the time you get to happy times - you should have a type b

There are mods to force a type c/41, but you would need to start a new career.