Called "Thurgauer Zug" push-pull train of the association historic Mittel-Thurgau-Bahn (VHMThB) with railcar ABDe 4/4 # 12 "Weinfelden"(built in 1965 by SIG, SWS, SAAS, BBC, MFO for the Mittel-Thurgau-Bahn, since 2006 running for the VHMThB), parlor car A # 719 "Bodan" of the former Bodensee-Toggenburg-Bahn, and cab car Bt # 205 (former Mittel-Thurgau-Bahn), is running along the Untersee (part of Lake Constance) between Steckborn and Mammern. The train run empty from Romanshorn to Stein am Rhein, for an extra journey from Stein am Rhein to Romanshorn.
