The Mareographe is the name used by Heuer for the same watch produced by it for Abercrombie & Fitch which the latter called the Seafarer. Heuer had a long standing relationship with the American sports good retailer Abercrombie & Fitch and therefore produced the Seafarer for them from the 1950s to the early 1970s. These watches were housed in Carrera reference 2446 cases modified to accommodate the pusher at the 9 o'clock position which is used to advance the tidal indicator.
In mid-1963, Heuer introduced the Seafarer reference 2447. Using the distinctive thinner Carrera case without a rotating bezel, this new chronograph was powered by a Valjoux caliber 721 movement signed Heuer Leonidas.
Featuring a silvered dial on which the sky blue tidal information perfectly stands out, the inner bezel with its 1/5th second hash-marks also cleverly serves as a tension ring to secure the crystal. However, the true rarity of this watch resides in the 11 letters proudly printed on the top part of the dial: Mareographe, as only 5 other reference 2446 Mareographe models double-signed Heuer are known to exist.
Presented today in untouched condition, the dial bears some patina that only adds charisma and poetry to this spectacular and rare watch.