Last night I water-lined the Nina model and began to tinker with it, to give it an appearance closer to that of a small Roman trade ship.
So far, this has involved removing the rudder and replacing part of the stern, and adding a curving stern post. I increased the size of the hold-openings as the kit is 1/100 scale and my minis, 1/48.
Later I'll add masts, steering oars, an awning and deck clutter which will help it to feel more in-scale.
Curiously, I have seen illustrations of Roman ships that aren't a million miles off this. I think it'll pass... might even be OK for the Rhine. Which gives me another idea for what I could use this for...