[Glossary](/glossary.md)/[Crew](/glossary/category/crew.md)

# Vertical Stabilizer

The equipment that cuts the dispersion penalties for moving and traversing, turning a gun that must stop into one that can shoot on the move.

Also known as vstab, stabilizer, vert stab.

A stabiliser reduces every [bloom](/glossary/bloom.md) multiplier by about a fifth. The base [accuracy](/glossary/accuracy.md) is untouched, so the specification sheet barely changes, and the vehicle nonetheless becomes a different thing to play.

It is worth most on vehicles that fight while repositioning and least on a [tank destroyer](/glossary/tank-destroyer.md) that never moves before firing, which is the usual argument for putting [optics](/glossary/optics.md) or a [camouflage net](/glossary/camouflage-net.md) in that slot instead.

## Related terms

[BloomThe widening of the aiming circle caused by moving, traversing or firing, and the reason a gun's paper accuracy is rarely what a player experiences.](/glossary/bloom.md)[DispersionThe size of the aiming circle at any moment, which grows with movement and shrinks as the gun settles.](/glossary/dispersion.md)[Gun handlingThe combination of accuracy, aim time and dispersion penalties that decides whether a gun hits what it is pointed at.](/glossary/gun-handling.md)[EquipmentPermanent upgrades fitted into a vehicle's three slots, each improving one area of its performance.](/glossary/equipment.md)

[Every World of Tanks term](/glossary.md)

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