Steam tug Daniel Adamson - inside the Scotch boiler
Introduction
The photograph on this page of Steam tug Daniel Adamson - inside the Scotch boiler by Chris Allen as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Chris Allen Taken: 11 Sep 2010
This is a very unusual view (I've waited over 30 years to take this picture) of the inside of the Scotch boiler seen here Image The majority of the small fire tubes are out, allowing this view through the front tubeplate. Each small hole (including the one I'm shooting through) should contain a fire tube as represented by the three that are left in situ. At the bottom you can see the three corrugated furnace tubes that would have the grates inside them. At the rear are the combustion chambers that are stayed together and to the shell (not visible). The tubes carry the gases forward from the combustion chambers to the funnel uptake. The tubes are mechanically expanded into the tubeplates.