As can be seen from the name "Enkaiyochi Zenzu" this complete map is focused on depiction of the coastlines and has some blank parts as to internal regions because it was made for the operations of the national defense.
「沿海輿地全図」の名の通り、国防上の事業として行われたため、本図は海岸線の描写が中心であり、内陸部に関しては空白も少なくない。