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  APOCALYPSE
  Nurgle is the Chaos God of pestilence and decay. The
  followers of this foul deity revel in the destruction of the
  universe and the continual ruination that is part of
  existence. Nurgle himself plans for the time when the
  universe dies, and he sends his armies of followers out to
  hasten his ultimate victory. 
  Overseen by Nurgle’s acolytes, thousands of twisted and
  corrupted slaves toil to build the awesome machines of
  destruction that will spread the plague of Nurgle to a
  hundred worlds. When the grotesque Plague Tower is
  complete, the Chaos Magi sacrifice the slaves, their bound
  souls driving the Daemonic engine with their raw emotion.
  The Plague Tower is a huge construction of rotting timbers
  and rusting metal that carves its way across the battlefield
  leaving a trail of death and contamination in its wake.
  Enemy fire bounces off its heavy armour, whilst inside the
  tower diseased followers of Nurgle wait impatiently, ready
  to spring into frenzied assault once the drawbridges have
  been dropped. This assault is often led by a Greater
  Daemon of Nurgle – a Great Unclean One – whose
  massive, maggot-ridden bulk is barely constrained within
  this twisted engine of war. 
  NURGLE PLAGUE TOWER
  POINTS: 700
  Size Comparison
  UNIT: 1 Nurgle Plague Tower
  TYPE: Super-heavy Vehicle
  STRUCTURE POINTS: 6
  ACCESS POINTS: The Plague Tower is cunningly designed to
  allow troops to disembark quickly and easily. Any number of
  units can embark or disembark to the front, side or rear. Units
  that disembark may assault.
  FIRE POINTS: The Plague Tower has ten fire points in its hull.
  WEAPONS AND EQUIPMENT: 
  - Plague Mortar
  - Two Demolisher Cannons
  - Pus Cannon
  TRANSPORT: The Plague Tower has a transport capacity of
  30.
  WEAPON                 RANGE   ST   AP   SPECIAL
  Pus Cannon*                  30”     7
  3
  Heavy 1, 
  Primary Weapon
  Demolisher Cannon        24”     10
  2
  Ordnance 1, 5”
  Blast,    
  Primary Weapon
  Plague Mortar**       G 24-72”  7
  3     Ordnance 1, 7”
  Blast,    
  Primary Weapon 
  * To fire the pus cannon place the Hellstorm template so that
  the narrow end is within 18” of the weapon and the narrow
  end is no closer to the weapon than the narrow end. The pus
  cannon is then treated like any other template weapon. 
  ** No cover saves are allowed against wounds inflicted by the
  plague mortar.
  SPECIAL RULES:
  Nurgling Infestation: Any unit assaulting the Plague Tower
  will be attacked by Nurglings. The enemy units suffers 3D6
  Strength 3 hits at Initiative 3 (even if the Plague Tower is
  destroyed in the assault).
  Explosion of Filth: When the Plague Tower is destroyed,
  tanks of pus stored inside will rupture and spray their contents
  over anyone close by. If the Plague Tower suffers a Wrecked
  result on the Catastrophic Damage table, then models within
  2D6” are hit, in exactly the same way as an Explosion result.
  All Nurgle-aligned models (those with the Mark of Nurgle,
  Nurgle Daemons, etct) are immune to the effects of an
  Explosion of Filth.
  ARMOUR
  WS     BS    S    FRONT   SIDE    REAR    I     A
  3        3    10      12         12        12      1     1
  © Games Workshop Limited 2008. Games Workshop, Warhammer, Warhammer 40,000, Apocalypse are ©, TM and/or ® Games Workshop Limited 2008. All rights reserved.
  Demolisher
  Cannon
  Demolisher
  Cannon
  Plague Mortar
  Pus Cannon
  Tanks of Pus
  
SOURCE: textdata/thevault/Warhammer/40k/1st-8th Editions (Prior)/5th Edition (2008)/Apocalypse Datasheets/40k 5e - Chaos Space Marines - Nurgle Plague Tower.pdf