As in the case with the wagons, carvings on water transport are found in various kinds of roman art and spread all over the roman empire. In the “Land Transportation II”-post I ended up showing a scene from the Column of Marcus Aurelius in Rome, where land and 
water transportation is joined together, here in a pontoon-bridge. Therefor this post starts with the same type of “joined scene”, also from the Column of M. Aurelius, but this time a boat is transported on a wagon over land (see photo right). The scene is some kind of victory-scene, where trophies are gathered and carried in a boat, and therefor it is not really a scene showing water-transportation.
Scenes of real water-transport are visible in the roman art and carvings, though. In Rome some sarcophagi show scenes of ships, both on full sail and in harbour-areas, and some of
these even show some nice details in ship-construction. Here, a good example on that type is a sarcophagus in Copenhagen (see photo right) showing three different ships on the front.
In the provinces ships are also seen in the burial-art, e.g. in the Trier-Moselle-region. The large monument in Igel, show scenes which refer to river-transport (see drawing right), 
since they clearly show small ships without mast or sail and some men pulling the ships up-stream. The Igel-monument is close to the river Moselle, and the carvings are therefor likely to show scenes from the roman transport on the rivers in 
Gaul. From another burial-monument by Trier are some sculptures of ships with wine-barrels (see photo left). These are reconstructed as having been some kind of top-figures on the monument, but now the ships are on display individually in the Trier Landesmuseum. These ships are made as sculpture in the round, but I think they are relevant to put in this context as yet another type of Transportation-Carvings.
