616 Stockholm södra

In some cases, Hydrographica has collected a number of the previous special nautical charts in A2 format into special “Special boating cards” that cover contiguous areas. The scale is the same, 1:10,000, as is the content, with 2- and 3-meter curves, accurate depth information and land topography. The difference is the format: The special boating cards are ring-bound in A3 format according to the same principle as the Swedish Maritime Administration’s series of Boating cards. The material used in Hydrographica’s special boating cards is Polyart, a synthetic polyester material with a paper feel. They are water and oil resistant, writable and easy to wipe off. But, like regular nautical charts, the material is affected and the colors fade if they are constantly exposed to sunlight.