This is an illuminated and illustrated maritime atlas, referred to as the Walters Deniz atlası. It is an early Ottoman atlas, perhaps dating to the tenth century AH / sixteenth CE. The work contains eight double-page charts executed on parchment. Four of the maps show the Mediterranean, Aegean, and Black seas. There is also a world map and a chart of the Indian Ocean. The various geographical names are written in black nastaʿlīq script. A distinguishing feature of this atlas is the detailed approach to representing such features as city vignettes.