Welcome OMR

....certainly, the Eppleton Hall is a beautiful vessel to model
I know very little about her & the WEB has some images....although not so helpful
The first image below of her stdb side deck level & the Bulwark supports displays no evidence of either a chain or steering rod tucked in above deck level........
If I were to guess, vessels of her size and age used a combination of chains @ the helm down to deck level via a few pulleys .......then a few meters of steering rod [less expensive] the back to chain leading equally to the rudder stock quadrant
With her displacement of ~~100 tons, the vessel could not have carried coal bunkers & steamed from Newcastle in the UK to San Francisco......there are a number of images of Fore & Aft sailing masts which I suspect were used whenever possible
There are also some very expensive

download mater listed
Finally, will you steam her with twin independent engines?
Keep us posted with images as you go...............
Derek
https://fineartamerica.com/featured/the-eppleton-hall-paddlewheel-tugboat-1914-daniel-hagerman.html