The nautical charts of Heel feature:

Navigation: Signs, dimensions, harbors, clubs incl. addresses, gas stations, cranes, slipways, ferries, service stations, regulations

Tourism: Catering, hints for shore leave, colored pictures and accompanying text

The nautical charts of Delius Klasing feature:

Navigation: Signs, dimensions, harbors, gas stations, disposal stations, rules and regulations

Tourism: Photos and accompanying text