Bleakly, she looked over at the cold and blackened firegrate.

They also had slightly smaller firegrate and superheater areas than the first batch.

It was similar to the tandem compound delivered a year earlier, but with a larger firegrate and an increased heating surface.

The boiler was lengthened, drivers grew in diameter and the firegrate was increased in area.

Internal alterations to the blastpipe and an increase in air space in the firegrate added to the new type of narrow chimney noticeably improved the draughting.

With these locomotives, Beatty attempted to combine the best design features and good qualities of his Cape 8th Class 2-8-0 locomotive of 1901 with the improved steaming that was obtained from a wide firegrate.