The Blackwall shipyard, begun in the late 16th century, continued, under various owners, to repair and build ships, particularly for the East India Company, throughout the 17th and 18th centuries. By the late 18th century Perry's yard, as the Blackwall establishment was then known, was the biggest private yard in the world. It subsequently became the yard of George Green (Perry's son-in-law) and the Wigram family. This print shows the Blackwall mast house, which Perry erected at the west end of his new Brunswick Basin in 1793 for masting and de-masting the East Indiamen moored and maintained there. It remained a significant Thames landmark until dismantled in the early 1860s.