In German language the first half of this book tells the history of Oldenburg-Portugiesische Dampfschiffs-Rhederei Kusen, Heitmann & Cie. KG, Oldenburg/Hamburg, seit 1882. The remainder of the book tells of MARTIME Gesellschaft fur maritime Dienstleistungen mbH & Co. KG, Elsfleth - seit 1995, and also has a very detailed fleet listing of this company.

The whole book is very well illustrated with black/white photographs.