Playable Japanese Subs

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Originally Posted by Harry Buttle

Then the cheapest and easiest way to walk a mile in their shoes is play SH3 and consider yourself sunk whenever you are detected, and for realism don't go deep or silent.

also remember to avoid allied vessels (just like Jap sub commanders did for most of the war).

What's the most expensive and most difficult way?

Regardless of this poster's opinion, I'd still like playable Japanese subs, cost be damned