Ok thanks.

But will the rep/rest on the gun slot add any to your SD?
My current SD (soft defence) is like 268 now, and i can stay underwater for 2.45
minutes.
My time to restore air (from empty to full) is like 1.15 minute.

Most of the time i try to surface on clouds.
Anyway whats a nice amount of SD for ss3? (redoutable)

No matter how many reps you put on, it wouldn't help, subs only real protection is to
stay submerged on the surface you are a dead duck, even a DD will kill you with a
couple of salvos.

What you need to do is to only surface when a gun armed vessel attention is else
where to top up your air. On average you have ten seconds before a BB or anyone
else for that matter, spots you and fires. You can get 40 seconds of air in that 10
seconds if you are using a SS4.

With your air tanks fully charged on a SS4 you have a dive time of 3:30, dropping by
30 secs for each level.

Yes. All my crew (except BO) are BVE

My question is, i want SD (soft defence) so BB's wont kill me that fast (if i surface).
Because my current SD is 264 but still I'm damaged very fast.

So i want alot of SD, Should i put a Restore, or a repair in the gunslot (For SD)

Firstly don't bother with a gunner, it's next to useless on a sub, rep will not work on
the gun slot. If you have two engineers then put them on, they'll give you more
speed , which is always a help.

Ensure your, planesman, sonar and torps have their full compliment as they will
improve your air supply, detection and accuracy/reload respectively.

Then it's down to you, driving a sub is about planning ahead and being aware of
what's around you ( a bit like chess). I think there's more skill involved but I'm
biased. My crew are all lvl 120 on a Uk R class.

Hope I've been of help.

Please can anbody answer my questions?