SMO are Owners of three sea-river ships. These ships operate mostly between the Rhône river and the Mediterranean.

The ships transport different cargos such as scrap, bulk cement, grains, steels, or project cargos. They are able to reach low draft ports as far as Chalon-sur-Saône, which is over 400 km from the nearest sea port, with 1.500 T of cargo! Sea-river transports such as this can be a great advantage for import or export companies with inland factories – they can avoid costly / dangerous trans-shipments in sea ports and also the organisation of extra truck or train transport.