the most imposing building of this period was a double-quadrangular storehouse of 1761 (probably designed by thomas slade); replacing the dummer's storehouse, it also incorporated a new rigging house and sail loft. it remained in use until it was destroyed in the plymouth blitz; the same fate befell several other buildings of the 18th and early-19th century, including the long and prominent pedimented workshop with its central clocktower, built to accommodate a range of woodworkers and craftsmen, the adjacent pedimented dockyard offices and edward holl's replacement dockyard church of 1814. nonetheless, the south yard alone still contains four scheduled monuments and over thirty listed buildings and structures (though some of these have been allowed to fall into a derelict state in recent years: the 18th-century south sawmills and south smithery are both on the heritage at risk register). in the space between the new slips and the new ropehouse, south of the boat pond, was a sizeable mast pond, flanked by mast-houses.