Short Sea Shipping needs to be developed as a sustainable transport alternative encompassing intermodal transport as well as transport of bulk cargo. With the coming cuts in the allowed sulphur content in bunker fuel and limitations on emissions of nitrogen oxides, the competitiveness of short sea shipping is put under great stress and new technologies must be considered. Engine manufacturers have started to offer liquefied natural gas (LNG) as an alternative to oil, but this alternative demands an infrastructure of LNG filling stations. Liquefied natural gas (LNG) is a climate- and environmentally friendly fuel that is to be made competitive through an effective infrastructure and good framework conditions. This has been the aim of a major project in which, inter alia, the Scandinavian countries and several large energy companies participate. The Danish Maritime Authority was the coordinating partner of the project. The purpose of the project was to develop recommendations for how to establish an infrastructure facilitating the use of LNG as a ships’ fuel. However, other important areas have also been identified. The project’s recommendations concentrate on five main areas: Bunkering of ships with LNG, Economic and financial conditions, Safety, Technical and operational conditions and finally Permits for an infrastructure ashore.