Ant you had any armor?
That a H39 would one shoot anything sounds like you had zero armor and even that the shells dont hit you directly you will still suffer damage from close hits aswell.

MN doesn't have armor at all its useless?
an h39 before patch(my friend) hit me with a full salvo and took me to 60% damage points
since this patch MN have come up with a lot of problems
there really weak and if armored up i wouldn't go very fast :/

As KM the armor are useless, I know. Still 1 inch deck wouldn't hurt. Never the less, I'm pretty sure MN got nerfed in the latest patch so you wouldn't be able to take the same damage as before. I didn't read what they have done to the ships as I don't have MN, but there should be a list somewhere of what they changed.

they nerfed MN to be 1 shoted? but can't 1 shot back that is the biggest fail ever!
that is so daft i am not playing for a while till they sort the MN lines out :|

http://fm.en.kupaisky.com/Community/Forum/View.aspx?num=1610&searchtype=0&pagecount=0&searchvalue=&sort=5&category=Z01&page1=1

That's what they did. I gotta say that a MN BB4 shouldn't be able to be oneshotted by a H39. No BB4 should be actually. But I cant say what happend in that battle and what your full setup are. So it's hard to tell if it is possible or not.

o.O rofl, 1 shotted by h39?, my richie can survive a monty salvo sometimes which is a bb5, probably that h39 is using triple 14.96" which can 1 shot even a bb4 if its all crit but with the 16", it couldn't 1 shot, and with your support, only 1 engy? 3 restore, you need to sell or change those restore to engies, your going to be a crappy richie cause you'll be likely 0 % of reching 45 oh,

about armor it can mount good armor but its not effective as the RN

after the mn/sn patch, the mn bb4 and 5 got a little boost on shell damage, but range still the same, and speed buff and bb4 got a little accuracy buff, and i guess your problem is your play style...

rush only when you have other bb supporting you, blindness of enemy is your friend XD, speed is your friend (so those restorers of your is useless since you get 900 sd with reps and engies and bo and gunners), master your angle both nonrushing angle and rushing angle...