Uwe gutentag
That's correct the Heidelberg was one of the ships who were often in Amsterdam with Muller & Co AG and CTA, next to Borussia, Bavaria, Thuringia etc.
I can remember a German radio-operator (complete in kaki out-fit) who told us very interestign stories about the sailing operation with the Hapag ships on the Amazons towards Manuas.
By the way I found out that we also handled oftern the Friesenstein, Schwalbenstein in AMS. They also sailed to S/A mainly to Antofagasta, Callao, Valparaiso and other far away/exotic places.
These ships were the last of the bulk express ships. Far more interesing then then the containership. Sadly everything is scrapped by now.
Danke
Jan Koppen
Amsterdam