A couple of suggestions have been made, one is use plans from another model and adapt them, for example Hemmens also produced The Lady Jane, and the Topaz. All these models were inspired by real Windermere or Thames steam launches, so the other suggestion received was to look at the real boats like the photo I have attached and see if plans are available. In the meantime I will continue to research The Countess and I do appreciate your help in finding information, drawings, photos and parts for the Countess

She’s a beauty.

Have you built or do you know someone who has built The Countess by Hemmens? The Hemmens brochure indicates the Countess was based on Deva built in 1886, however it may be a typo since there is a steam launch called EVA - I have not found anything about DEVA?. Also from the scale the original steam launch would have been 33 feet long. The aim is to locate and purchase drawings and or parts to build The Countess if possible, if not then to build a reimagined version of The Countess or a similar 33 foot steam launch, your suggestions will be both welcome and appreciated.
I have searched extensively for information on The Countess and here are the only two photos of The Countess that I have been able to find, any further photos or information about The Countess would be of great assistance, thank you