I must admit I was a bit surprised when I looked at he model boat section here and saw relatively little activity. Spending most of my time with boats, in particularly steam powered ones I though I might as well add something here.
This was a lockdown project and came about as a result of deciding to use up some of my collection of hulls and steam plant that I had lying around. This actually started many years ago when I purchased what was sold as a static display model of a Titanic lifeboat:

Despite being crude in some respects it was nevertheless a clinker built wooden model of an open boat with internal compartments and thwarts, lending itself to quite a wide range of potential scales. The inspiration for the purchase was that I had seen some pictures of the very same model used to house a steam plant and be turned into an open steam powered work launch. I had always fancied something similar but I really wanted to increase the sense of presence on the water so 1/6th scale always appealed to me.
After another good dig around the workshop I came across the Miniature Steam Clyde plant that was used for a review article in Model Boats Magazine a number of years ago:

I knew from what I had seen that the hull would comfortably support a small steam plant but I wasn’t sure if a 1/6th figure would prove to be too big so it was time to start collecting some of the bits I didn’t have and test the feasibility of whether this could become a working model.
I had a 1/6th action figure earmarked for another open boat project so he was borrowed and two of the central thwarts were cut out of the model to allow the boiler plant to sit in the bottom of the boat:

The Clyde plant was originally supplied in kit form to support a review article in the September 2012 edition of Model Boats Magazine:

The entire plant is very compact and the gas tank and separator sit on a common base with the boiler and engine. The engine is a twin cylinder double acting oscillator with a built in control valve very similar in configuration to the old Cheddar Puffin engine but made with more modern materials,

The flue and the boiler top were both treated to an acid primer before a series of painted weathering effects in enamels and acrylics were added to create a burnt paint look. Dark grey enamel ‘soot’ was added to the top of the flue with an airbrush and a thinned down soot was airbrushed over the upper surfaces of the boiler and the lagging:

All the boiler fittings and the engine were painted with a typical engine green gloss enamel before a dirty enamel wash was painted over everything to matt down the paint and create more realistic shadow areas. The gas tank was painted in the same green and then weathered over and all the bare brass fittings were also treated to a dirty wash:
