What are barbettes?

Some articles on barbettes, barbette:

Centurion-class Battleship - Description
... The ships were armed with four 10 inch (254 mm) guns in two barbettes covered by open-backed armored hoods and capable of all-around loading, a secondary armament ... between high-freeboard ships with their main guns in open barbettes and low-freeboard ships equipped with old-style, heavy, circular turrets and had proven the ...
HMS Jupiter (1895) - Design
... The turrets were placed on pear-shaped barbettes six of her sisters had the same arrangement, but her sisters Caesar and Illustrious and all future British battleship classes had ... The barbettes for the main battery were protected with 14 in (360 mm) of armor, and the conning tower had the same thickness of steel on the sides ...
Shikishima Class Battleship - Design and Description - Armour
... of the ship and was surmounted by a six-inch strake of armor that ran between the barbettes for 220 feet ... The barbettes were 14 inches (356 mm) thick, but reduced to 10 inches (254 mm) at the level of the lower deck ... The armour of the barbette hoods had a maximum thickness of 10 inches (254 mm) while their roofs were three inches thick ...
French Ironclad Océan - Design and Description - Armament
... These ships had their main armament mounted in four barbettes on the upper deck, one gun at each corner of the battery, with the remaining guns on the battery deck below the. 240-millimeter (9.4 in) guns in the barbettes, and on the battery deck, four 194-millimeter (7.6 in) and four 164-millimeter (6.5 in) guns ... This was to upgraded four 274-millimeter (10.8 in) guns in the barbettes and eight 240-millimeter (9.4 in) guns on the battery deck before she was commissioned ...
HMS Temeraire (1876) - Design and Construction
... experimental she was the first British ship to be equipped with guns in barbettes located on the midline on the upper deck ... Indeed, she was the first British ship with barbettes of any kind ... The foremost barbette was located ahead of the foremast, and had a field of fire ahead, extending to well abaft the beam on both sides ...