Hi,
Do you check these routes meet the OSM requirements? 
The relation 4513980 has the ways in the reverse order... 
OSM Inspector shows quite a few of these ferry routs are incorrect...
https://tools.geofabrik.de/osmi/?view=pubtrans_routes&lon=151.23079&lat=-33.84752&zoom=13&baselayer=Geofabrik%20Standard&overlays=ptv2_routes_valid%2Cptv2_routes_invalid%2Cptv2_error_ways%2Cptv2_error_nodes%2Cptv2_routes_valid%2Cptv2_routes_invalid%2Cptv2_error_ways%2Cptv2_error_nodes