NIR 101 Class

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Northern Ireland Railways 101 class
NIR 101 Eagle with an Enterprise service in Dublin in September 1980
Type and origin Power type Diesel-electric Builder Hunslet Engine Company Serial number 7197–7199 Build date March–June 1970 Total produced 3
Specifications Configuration: ​  • UIC Bo′Bo′ Gauge 1,600 mm (5 ft 3 in) Prime mover English Electric 8CSVT Mk II Train brakes Air
Performance figures Power output 1,350 hp (1,010 kW)
Career Operators Northern Ireland Railways Class 101 Numbers 101–103 Withdrawn 1989–1999 Disposition 1 preserved, 2 scrapped

The NIR 101 Class is a class of diesel-electric locomotive formerly operated by Northern Ireland Railways (NIR). With the return to the working of the Enterprise service from Belfast to Dublin with coaching stock instead of augmented diesel railcar sets, NIR found itself with no suitable main line diesel locomotives. The 101 Class (DL) became the answer to the immediate problem working in conjunction with the newly acquired British Rail Mark 2 coaches.