KM proxy torps is all you need =D

I have 4 subs (UK, KM, MN and SN) and I can't stand any of them except the KM.

However, the IJN sub is awesome.

But have no fear, after NF works them over some more, they'll all have their air
supply cut in half (3 minutes down to 1 minute or less), speed reduced, less
defense, and less damage from their torps, Plus more power for HH and DCs.

Why go with any sub nowadays, they're totally obsolete in today's NF GB2 "BB-
ONLY" game.

PROOF? Take alook at any game with subs, most are annihilated within 3 minutes.
Those that didn't charge in, may have survived a little longer, but running out of air
just when you fire your first torpedo is a game ending experience.

Subs can make kills even when they miss. Proxy torpedoes are the king of that. Therefore
KM subs win.

That's not to say other nation's subs can't be capable opponents. My advice, play
whichever nation you have the highest level engineers in, because subs need 1-2 uber
engineers to function well.

And if you have no uber engineers... start with KM subs. =)

IJN torps have sniper range.

MN has nuclear splash.

UK is a joke.

USN is meh, average.

Those proxy torps are a life saver, especially when fighting enemy subs.

KM
best turning speed.
invisible torps (they cant pinpoint your location)
HUGE splash area
bonus to engineers( minor but every sub use 1)

"SS is as deadly, as its ability to kill the enemy defending SS"- or simply what is the
point to be BB killer when first you need to survive the SS line.
now go and use the google or search tool.This has been discussed

ss4 km also has 5ish seconds reload and is the fastest sub

As with most ships, it depends on the purpose. The reason most people will say KM or IJN
is because of the strengths they have.

KM -
Proxy Torps
SS4 Deck Gun

IJN -
8 Front tubes with 20k+ torps.

If your fighting other subs (or small ships) KM makes it easier. If your fighting capital
ships, IJN hits so hard its just hard for other subs to compete.