Barbette

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Barbette of the French ship Redoutable (1876)
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Barbette of the French ship Redoutable (1876)
For the early 20th Century female impersonator, see Barbette (drag performer)

A barbette is a protective feature around a cannon or heavy artillery gun.

The name comes from the French phrase en barbette referring to the practice of firing a field gun over a parapet (defensive wall) rather than through an opening (embrasure). The former gives better angles of fire but less protection than the latter.

Before the complete introduction of the fully enclosed armoured gun turrets, a barbette was a fixed armoured enclosure protecting the gun. The barbette could take the form of a ring of armour around the gun mount over which the guns (possibly fitted with a gun shield) fired.

In warships from the age of the dreadnought forward, the barbette is the non-rotating drum beneath the rotating gun turret (properly known as the "gunhouse") and above the armoured deck on a warship. It forms the protection for the upper ends of the hoists that lift shells and their propelling charges (e.g. cordite) from the magazines below.

illustration of the barbette in relation to other parts of a battleship turret
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illustration of the barbette in relation to other parts of a battleship turret

When applied to military aircraft, a barbette is a position on an aircraft where a gun, or guns, are in a mounting which has a restricted arc of fire when compared to a turret. The word is frequently used to describe the tail gunner position on bombers such as the B-17 "Flying Fortress".

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