Engraved chart on vellum double sheet, 91 x 62 cm, engraved by Ch. Dyonnet, la Teinte par Naudin, Nyon, written by F. Lefevre, drawn in 1870 by E. Mouchez, small smudge on left margin, small stamp at top left corner, a 14 cm tear to lower margin without any loss, soiled at the back, plan itself in good condition, publiee au Depot des Cartes et Plans de la Marine, Paris, 1875.