This bulky 6-wheeler, 32 metric ton diesel locomotive was built in 1966, under license from the Yorkshire Engine Company (YEC), by the Spanish Naval Construction company for the Catalan railways that were part of the FEVE group (State narrow gauge railways). Its appearance (in particular the railed veranda located behind the cab) is very similar to that of the YEC- built 4-wheeler Class 02 standard gauge shunters that were widespread on British Rail from 1960-61 until the mid-1970s. N° 824 was used in northern Spain first for shunting potash wagons at the Suria mine, then later at the Solvay salt mines. It ended its career at Martorell depot near Barcelona.

It avoided being scrapped when the CFBS bought it in 1991. It saw very little service before breaking down and being placed in storage due to a shortage of funds.
824 began being restored to working order by an outside company in the late 1990s. This process lasted more than a decade and was very costly. Many components have been rebuilt: chassis, wheels, « Twin-disk » transmission, electrical circuits, etc.

The original Rolls-Royce diesel motor (hence the engine’s nickname) was replaced by a modern Deutz 400hp unit. Having returned to the CFBS in 2016, it began being used regularly the following year after various teething problems. In the high season, it is used mainly on the St Valery to Cayeux line, and in spring and autumn on the regular services from St Valery to Le Crotoy. It can replace any CFBS steam locomotive in the event of a breakdown.