In 1931, the South African Railways (SAR) placed a single lightweight Class NG G14 Garratt articulated steam locomotive with a 2-6-2+2-6-2 Double Prairie type wheel arrangement in service.

[1][2] A single narrow gauge Garratt locomotive was built for the South African Railways by Hannoversche Maschinenbau AG (Hanomag) in 1930.

It was very similar to, but slightly larger and heavier than the Class NG G12 of 1927, the smallest Garratt to ever enter service on the SAR.

It was very similar in dimensions to the earlier Class NG G12, but it had cylinders with a 1⁄2 inch (13 millimetres) larger bore which not only resulted in more power, but also an increase in axle loading.

All three remained there until 1949, when the Kakamas line was also widened to Cape Gauge and they were transferred to South West Africa for a brief period.