Rhett was a colonel in the colonial militia, receiver-general of the Lords Proprietors of Carolina, surveyor, and comptroller of customs for Carolina and the Bahama Islands.[3] He was also an active merchant captain, sailing the vessel Providence between the Carolinas and the Bahamas. In April 1699 the Providence was attacked by Dutch pirate Hendrick van Hoven (alias Captain Hyne or Hind):
about the latter end of April last, one Capt. Hind, a notorious pirate and sea-rover, having lately got into a brigantine with a mixt company of Dutch, French and other people, came up with an English-built ship mounted with two and twenty guns called the Providence galley, under the command of Capt. William Rhett of Carolina, who made a very generous defence, but was outdone and taken by the said Pirate.[4]
In 1706, Rhett commanded an improvised naval flotilla which fought off a Franco-Spanish attack on Charles Town.[1] In 1718 he provided two sloops to be fitted out as pirate hunters - Henry and Sea Nymph, each with eight guns and a crew of between 60 and 70 men. Rhett assumed the position of captain of this small flotilla and led it to victory in the 1718 Battle of Cape Fear River, capturing Stede Bonnet, the so-called "gentleman pirate." Bonnet escaped from jail with the help of local merchant and fellow pirate Richard Tookerman; he made it as far as Sullivan's Island before Rhett again captured him.[1]
Rhett's house in Charleston, completed in 1716, still stands in its original location at 54 Hasell St., Charleston, South Carolina. It has been restored and is now privately owned. A Confederate politician born Robert Barnwell Smith changed his name to Robert Rhett, an ancestor.
^Rhett's death is recorded on his headstone as 12 January 1722, but in the Gregorian calendar, that date corresponds to 12 January 1723. Until 1751, in the British Empire the year ended on 24 March and the new year began on the 25th. Thus from 25 March until 24 March would be 1722, but in the current dating system January–March of that year is 1723.
^Bolton, Charles K (1919). Portraits of Persons Born Abroad who Came to the Colonies in North America Before the Year 1701, with an Introduction, Biographical Outlines and Comments on the Portraits, Volume 1.