Shipbucket

...I'm not exactly digging the gun barrels of that last one, though.

It's a tank turret

I know, as I mentioned before. It's not the turret though, it's the gun. The muzzle brake looks out of place in Shipbucket scale. I'd suggest something like the options I've redrawn here, or even enlarging the turret a little bit (Shipbucket scale isn't exactly precise anyway):

I'd go for the second option.
The upper one looks like some kind of huge mortar.

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“Close” only counts with horseshoes, hand grenades, and tactical nuclear weapons.
That which does not kill me has made a grave tactical error

Worklist

Source Materiel is always welcome.

I know, it was just meant as a rough sketch - Alex could probably do much better and frankly I was a bit hampered by this new-fangled MS Paint thing anyway

If there is a muzzlebreak in the tubes (remember lads, tubes, not barrels) then I suggest that it's drawn in the more "reduced" way as Klaglds suggested. But neither 85mm nor the 100mm tankgun tubes didn't have any muzzlebreaks.

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Shipbucket mainsite, aka "The Archive"
New AU project "Aravala"

Then It have been a stain on the photo I got. When the upload are, I'll send they wit out that stuff. But thanks for the comments! It helps!

Very very good work !

I have in mind an AU North Korea and I will use ships from here (unchanged) and some bigger,such as the Kim Jong Class (ex-Soviet Pr.57 Kanin,2 ships) and the Kaesong I&II (ex-Soviet Pr.56 Kotlin Class).Kaesong I is the AAW variant of Kotlin Class with SA-1 Goa missile (but with many North Korean impovements) and Kaesong II has helipad for one Ka-28,3 each sub class.

I also have material from a forum about North Korea.The Kim Jong and Kaesong Class are fictional ships,the bigger North Korean ship is the Najin Class,but according that forum they have a old Krivak I frigate.