With this new book, Philippe Caresse studies history of art and event of IENA & SUFFREN. These two buildings marked, with Charlemagne, the end of the period opened with the Charles Martel. The variety of sizes and a provision was needed so questionable artillery undivided it was unthinkable to build the other ships of this type with a displacement greater than 12 000 tonnes. The careers of two battleships, until their tragic end, is evoked by using the most comprehensive official documents. Remember that the disaster of the first overthrew a government and that the disappearance of the second did not leave any survivors. With an abundant iconography, carefully selected, the author highlights this little known part of our naval history.