Copyright of the texts is owned by the OKS

Copyright of the photographs is owned by Cees de Jonge (The Visual Art Box, Obdam) and Madeleine ter Kuile (Reekx, Groningen).

The commercial rights have been transferred to the OKS, which also owns the rights of reproduction. Downloading images form this site is permitted for non-commercial use only, provided the copyright statement remains unchanged.

All copyrights of the pictures of objects given on loan to the Fries Scheepvaart Museum by the OKS are owned by the aforesaid Fries Scheepvaart Museum in Sneek.

Permission of the OKS is required for any other form of reproduction; this permission may be subject to conditions. A request for permission can be filed via email (

The website was designed by Van der Let & Partners in Heerenveen

The Adlib database is maintained by Henk Js. Kloosterman in Groningen.

Van der Let & Partners in Heerenveen

The OKS Collection

Our collection consists of approximately 30,000 cultural heritage objects which are loaned to 34 institutions.


Secretariaat Ottema-Kingma Stichting
Harlingersingel 23-A
8913 CJ Leeuwarden

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