New Zealand DSG class
DSG 3114 in Dunedin, 2009.
Type and origin Power type Diesel-Electric Shunter Builder Toshiba Heavy Industries, Japan[1] Build date 1981–1983
Specifications Configuration: ​  • UIC Bo-Bo Gauge 3 ft 6 in (1,067 mm) Length 13.5 metres (44 ft 3 in) Loco weight 56 tonnes (55 long tons; 62 short tons) Prime mover Two Cummins KTA-1150L RPM range 1800 rpm Engine type I6 Diesel engine Generator Two Toshiba SDT 1144 Traction motors Four Toshiba SE 2314 Cylinders 16 Cylinder size 159 mm × 159 mm (6.3 in × 6.3 in)
Performance figures Maximum speed 60 km/h (37 mph) Power output 700 kW (940 hp) Tractive effort 130 kN (29,000 lbf)
Career Number in class 24 Numbers DSG 3005–3304 First run 1981–1983 Disposition In service

The New Zealand DSG class is a type of diesel-electric shunting locomotive used in New Zealand. The class shares a central cab design with the smaller DSC class shunting locomotive, and is twin-engined. Meanwhile, the very similarly designed, single-engined DSJ class, has a cab that is offset from the centre.

The DSG class shunters were built in four batches from 1981 to 1983. The first batch of six locomotives was introduced in 1981,^[2] followed by batches in 1982 and 1983.^[3]

The locomotives have seen widespread use throughout New Zealand, particularly in larger yards and for port traffic.^[3] They also see service on sections of mainline, performing regional shunt duties in a number of areas.

All DSG class locomotives are in the KiwiRail Mark 2 colour scheme (Vertical separations of main colours on car body).^[1]