Built: 1966 by GM, La Grange Illinois works USA.
12 of these Bo-Bo locomotives were delivered to CIE in 1966 to complement the earlier batch of 141 Class locos, again designated as the B Class. The 181 Class also carried on the new black & tan colours on delivery. The 181 Class locos are externally similar to the 141 Class, but had upgraded 1100hp engines compared to that of 950hp on 141 and 121 locomotives. Again the 181s could also work in multiple within its own class and with other GM locos.
As you might expect, the 181 Class locos worked all over the Irish Rail system and included services on the Dublin-Belfast 'Enterprise' also, and in later years worked Dublin suburban trains from Maynooth, Arklow and Drogheda. Their last passengers duties were also on cross country services, and in their finals years worked on engineering trains with their sister 121 and 141 Class GM locos. One example, No.190, has been preserved by the ITG.
Max Speed: 80mph Weight: 67tons Length:13.42
Fitted for multiple operation with other GM locos (121+141)