LMS Sentinel 7164

The London, Midland and Scottish Railway (LMS) Sentinel No.

Its design was that of the single-speed Sentinel,[1] a vertical-boilered geared locomotive, using Sentinel's standard vertical boiler and steam motor design.

This placed the boiler and engine at opposite ends of the frames, with the water tank in the centre.

[2] Although the LNER Class Y1 Sentinel was also a single-speed, they were of the larger Central Engine design and were similar to the two-speed locomotives in appearance.

7232 Ann was in 2003 painted to masquerade as 7164 on the Embsay and Bolton Abbey Steam Railway.