TypeCount Surprise146 Grand Surprise40 Toucan29 6.5 m SI15 Esse 85013 Luthi 87013 Popular on the lake Boats with active jauge SRS on Lac Leman, based on: http://www.swissratingsystem.org/app/srs/srs2012.nsf https://apex.cern.ch/pls/htmldb_accdb/f?p=241:1