In early New South Wales the Naval Officer wasn’t a ship’s captain’s title on shore leave — it was the official who enforced British navigation and trade laws and collected import duties, the forerunner of the Collector of Customs. Governor King appointed a part-time Naval Officer in 1800; after Navigation Law changes and the end of the East India Company’s regional monopoly, the Colonial Office upgraded the post. Captain John Piper (born Maybole, Ayrshire, 1773), formerly of the New South Wales Corps, was appointed Naval Officer and returned to Sydney in 1814. He became one of the colony’s most conspicuous public men — later nicknamed in society as a “prince” of colonial hospitality — until suspended in 1827 over large deficiencies in customs collection (mismanagement rather than proven theft). He resigned and sold much of his property to clear the debt.
The Naval Officer’s workplace sat in the maritime strip of Sydney Cove / George Street North associated with the Government Dockyard (accounts place the office toward the northern end of the dockyard precinct, earlier linked with the master boat builder’s residence). Customs functions later moved to premises in The Rocks (including the Argyle Stores period) and, from 1845, to the purpose-built Customs House on Circular Quay. The landmark “outside the Rawson Institute for Men” points to the later Mariners’ Church / Mission to Seamen complex at about 100 George Street (opened 1859; Rawson Institute name from the 1909 extensions) — handy Rocks orientation for historic views, but not itself Piper’s Naval Office.
Images here relate to George Street North and the early customs / dockyard shoreline story. Fix every “Navel” typo to Naval; the ship was Pitt, not “HMAS Pitt.”