This model is based on the Marsala ship, a famous wreck discovered off the coast of Sicily in 1971. It is just the hull, with no oars to speak of, nor mast. I don't know if this ship even had a mast back in the day, which is why there is no provision for one. If you want to add a mast, then you have a mere 1mm of plastic to drill through to make provision for one.
This model is also the subject of my third CAD tutorial, which you can view here: