She made four complete voyages as a slave ship in the triangular trade in enslaved people.

A French privateer captured her in 1796 in a single ship action during her fifth voyage transporting enslaved people.

[1] 1st voyage transporting enslaved people (1789–1790): Captain John Corran sailed from Liverpool on 4 November 1789.

Ranger started acquiring captives on 3 March 1790, first at Cape Coast Castle, and then at Anomabu.

Dolben's Act apparently resulted in some reduction in the numbers of captives carried per vessel, and possibly in mortality, though the evidence is ambiguous.

[4] [a] 2nd voyage transporting enslaved people (1791): Captain John Corran sailed from Liverpool on 20 February 1791 and began acquiring captives on 6 May.

[9] 5th voyage transporting enslaved people (1795–1796): Captain John Wilson sailed from Liverpool on 17 January 1795.

In February 1796, Lloyd's List reported that Ranger, Wilson, master, was the windward of Barbados, having come from Africa, when she encountered a privateer.

[16] In May Lloyd's List reported that Ranger, Wilson, master, had been retaken and brought into Barbados.