During the reign of Sayyid Sultan bin Ahmed in the 18th century, Oman's trading activity again increased and the capital area's two harbours — Muscat and Mutrah — diversified, Mutrah was quickly established as a commercial port while Muscat was used for naval operations. The ruler's son Sayyid Said continued to expand maritime commerce although it again went into decline after his death in 1856. Maritime activity was limited to the import of essential items, mainly from India by old-style wooden dhows. Ships had to anchor offshore and sometimes wait for days before cargo could be unloaded manually into small boats.