We are still snowed in so I've been watching the box again, this time a BBC4 docco about the first female Pharoah, Hatshepsut, and the expedition she is said to have despatched to the mysterious land of Punt to get myrrh and other exotic goods.
They went through the various other imponderables, from how wide the ships were (difficult to say because they are depicted only side on in the tomb reliefs) to whether the planks were caulked or not (they caulked them anyway because the hull leaked like a bundle of sticks even after several weeks submerged in the Nile).
But one thing that is absolutely certain and clearly shown in every depiction of Ancient Egyptian ships is that the main method of propulsion was by oar.
If you are in the UK you can watch it on BBC iPlayer.
Oh, and another thing. Why do documentary directors insist on endless sequences of the presenters driving, flying, walking down corridors and so on? It is totally irrelevant and demonstrates how directors are not at all interested in their subject, simply on adding movement during the commentary. It makes me really angry.