The Syltferries operate all-season between the Danish island Rømø, which is easily accessible via a free causeway from the Danish mainland, and the island Sylt. The modern double ended ferries "SyltExpress" and "RömöExpress" take all cars, motorcycles, pedestrians and cyclists, as well as horse and boat trailers, caravans, motor homes, busses, trucks and even heavy cargo to and from the Island Sylt in a very comfortable way. info can be found at www.syltferry.com
You can purchase tickets at the Rømø-Sylt Line‘s ticket office by the ferry terminal (follow route 175 as shown on the map below).