The LNER W1 No. 10000 (also known as the Hush-Hush due to its secrecy and "Galloping Sausage" before rebuild due to its shape) was an experimental steam locomotive fitted with a high pressure water-tube boiler. Nigel Gresley was impressed by the results of using high-pressure steam in marine applications and so in 1924 he approached Harold Yarrow of shipyard & boilermakers Yarrow & Company of Glasgow to design a suitable boiler for a railway locomotive, based on Yarrow's design.
| Attributes | Values |
|---|---|
| rdfs:comment |
|
| foaf:name |
|
| foaf:depiction | |
| active years end year |
|
| active years start year |
|
| builder | |
| number built |
|
| rebuilder | |
| thumbnail |