Lauttainfo France has a French edition and this English one, written for people visiting from abroad. It is part of lauttainfo.com, which started out covering road ferries in Finland and has since added separate guides to other countries. Nobody behind it works for a ferry company, a port, a transport network or a tourist office, no ticket is sold here, and the costs are paid by the adverts on the pages.
Who runs a crossing in France varies a lot. A département operates the Seine river ferries, a city transport network may own the shuttle boat across its river or harbour, and the island routes belong to shipping companies. Our figures come from whichever of them publishes the timetable and the fares; a copy is archived on the day we read it, and that day appears beside every table on the site.
What trips people up is rarely the departure time. More often it is a boat that docks at a different slipway on some sailings, an island where only one of the boats can take your car, or a service that simply stops when the season ends. Pages are written to make those points clear to a reader with little or no French.
Where official sources contradict each other, or a number turns up only on a reseller's booking page, it stays off the site and the page explains the gap. Because sailings change from season to season, every crossing carries two dates: the day it was last verified and the date by which it will be verified again.
If something here no longer matches what you found at the quay, write to [email protected] and name the crossing. Corrections go in only after the official source has been checked.