No brakes, other than a hand brake actuated by a large hand-wheel, were fitted to No.42. This, the fireman was expected to work under the driver's commands. No.42 was rebuilt in 1901 with a cab which enclosed the safety valves that now exhausted through the cab roof. The spectacles were small and round and the cab sides were quite open. This alteration increased the weight by about 1 ton. The makers plate was removed at some time during its career, possibly when the engine was rebuilt. No.42 was well suited for dock shunting. A relatively high tractive effort for a four coupled engine of 1874 vintage was packed into a total wheelbase of , ideal for the tight dockyard curves. No.42 was scrapped in June 1925. Dock working To reach the quays, No.42 had first to pass over a short tramway from the BNCR goods yard to the Belfast Harbour Commissioners' tramway. To accomplish this feat required three persons to drive and conduct her, and if more than two wagons were attached, a fourth to look after them. Two of these people were equipped with red flags. While on the tramway her driver was not allowed to sound the whistle, open the cylinder drain taps or allow the engine to blow off. The maximum speed was to be three miles per hour. Having got on to the Harbour Commissioners' tramway she was still not allowed to blow off or to have the cylinder drain taps opened. The maximum permitted load was 24 wagons or 12 on Donegall Quay. One other rather peculiar regulation forbade her from being closer than to any other train approaching or preceding her on the same line of rails. Apart from shunting the quays and goods yard, No.42's main duty was to go down to Albert Quay and bring up loads of locomotive coal. No.16 No.42 must have been considered successful because the NCC built another similar engine in 1914 in their own works at York Road, Belfast. This was numbered No.16 and for many years was nicknamed the Donkey. In many ways it was a replica of No.42 and with similar leading dimensions except that throughout its life a cab was fitted, recessed at the spectacle plate to allow for the safety valves, which in this case were of the Ross "pop" type. The spectacles were larger than those of No.42 and rectangular rather than