NER J72 0-6-0T

The NER J72 Class was a small 0-6-0 shunting tank engine designed by Wilson Worsdell for the North Eastern Railway in 1898 and continued in production by the LNER and (briefly) British Railways until 1951. The class's 53-year production span is the longest of any British steam locomotive class, a tribute to the simplicity and reliability of Worsdell's late-Victorian design. 113 were built and five have survived in preservation, an exceptionally high survival rate.

The J72 was a small, simple, conventional Victorian shunting tank with two inside cylinders, a saturated round-topped boiler, and Stephenson valve gear. Worsdell designed it in 1898 for NER yard work, and the design was so well-suited to its purpose that the LNER continued to build the class in 1925, in 1949, and British Railways turned out the final batches in 1949 to 1951. Five separate batches by three different ownership eras: a unique distinction.

The class was allocated across the NER and (later) LNER and BR Eastern Region depots. Major locations included York, Newcastle, Gateshead, Darlington, Sunderland, and Hull. The J72s spent their entire working lives on yard shunting until they were withdrawn through the early 1960s as diesel shunters took over.

Five J72s have survived in preservation. The best-known is 69023 Joem at the North Yorkshire Moors Railway, in working order. Other survivors are at various heritage railways. The class's simple design has made the survivors useful and reliable performers on heritage railways, and they continue to be a familiar sight on a number of preservation lines.