The Board of Ordnance was a British government body responsible for the supply of armaments and munitions to the Royal Navy (until 1830) and British Army. It was also responsible for providing artillery trains for armies and maintaining coastal fortresses and, later, management of the artillery and engineer corps. It also produced maps for military purposes, a function later taken over by the Ordnance Survey. The board existed under various names from at least the early fifteenth century until 1855, with headquarters in the Tower of London.