What we measure
We record a single type of price: the standard fare, all taxes included, for a non-resident traveller — the one each company displays by default on its own website. We do not apply the discounts tied to Corsican resident status, and those resident fares do not appear in our data. The price we keep is the tax-inclusive amount as shown at the moment of the reading.
Every price published on In Tempu is dated. The observation date of the version now online is 1 July 2026: that is the day on which the state of the fares presented here was frozen. A recorded price is neither a "real-time" price nor an estimate; it is the value observed on a precise date, kept exactly as it was.
Our sources
We query the companies serving Corsica from the mainland directly. To date, four carriers feed our readings: Corsica Ferries, Corsica Linea, La Méridionale and Moby Lines. We go through no booking intermediary: prices come from the carriers themselves.
Collection is daily. Each day, new crossings and new departure dates are added to the observations already on file. A fare displayed today for a departure several months away may well change: that is exactly why we repeat the reading day after day instead of freezing a single value.
How the averages and minimums are built
Two figures keep appearing on our pages, and they do not mean the same thing.
- The minimum ("from") is the lowest price we have actually observed on a route, for a given period.
- The average ("on average") is the mean of all the dated observations we hold for that same route and that same period.
Both numbers are aggregates of real observations, each tied to its reading date. Neither is derived from the other, and neither is extrapolated. We never divide an average to infer a minimum, nor the reverse: they are two distinct readings of the same set of records.
What our data does not cover
Coverage is not uniform. It varies by route and by month, depending on the crossings we have been able to observe so far. Our current version covers three routes. For a given route/month pair, a missing figure simply means no crossing has been recorded for that period yet: we flag the gap rather than fill it with an estimate.
Some information is deliberately left out. We do not publish crossing durations, nor, as noted above, resident fares. When a price is missing, it is an absence of a reading, not an oversight: we would rather show a blank than a number we never measured.