Today an unsend postcard arrived from France with the intersting detail of the deck grills in cleaning in front of the french Torpedoboat ARC arround 1905 - it does look helpfull:
...also the wobbling gangway is interesting for me.
The printing was really blurry by enlarging.
The rivets on the propellers' protection (towards the hull) aren't visiable - so they do not give any shadow and must have been from a flat topside type aliningvwith the surrounding part, weren't they?
I was able to lay my hand on a drawings of the Normand tripple expansion steam engine of 1891:
The low pressure steam is directed in a pair of cylinders so it is a tripple expansion but a IV-cylinder engine.
For me of interest in particular is the massive engine head, as it is all you can Catch your eye by looking into the engine rooms through the opened hatches.
Here it is obvious the engines top isn't a simple task - balsawood may be a solution?
P.S.edit
You can stop eating, but never stop adding information to your project's pile!