It seems like an uphill battle against the T8 Tirpitz. Even in my T9 Iowa, when a Tirpitz closes to 10km and keeps closing, they start to get within torpedo range, and when I try and punish them for showing their broadsides, I almost NEVER get a citadel. I can penetrate the Tirpitz just fine all the time, even bow on I can hit them for a ton of damage, but citadels don't seem to exist on this ship. If they do broadside I can achieve numbers like 10k in a salvo... still quite lackluster compared to citadels.
Where should I aim to hit the citadel on a Tirpitz? I usually aim for the waterline under the smokestacks, but this doesn't produce the best results.