Model of a cross-section through an armoured turret

This model offers a glimpse into the armoured turret on the turret ram Prins Hendrik der Nederlanden, the Royal Netherlands Navy’s first ironclad ship. The vessel was built in 1866–1867 at the Laird Brothers yard in Britain, after a design by Laird and the Dutch engineer B.J. Tideman. The Prins Hendrik der Nederlanden was fitted with two of these turrets, each housing two guns with a 23 cm calibre.