The castle originally had four tiers of artillery – the heaviest and longest-range weapons occupying the upper levels, including the keep – with a total of 66 firing positions and another 53 gunloops in the basement for handguns, should close defence be required.[73] The embrasures in the walls were all widely splayed to provide the maximum possible space for the guns to operate and traverse, and the interior of the castle was designed with vents to allow the smoke from its guns to escape.[74] The battlements on the modern castle are in a faux medieval, rather than Tudor, style and date from 1732.[3]