This afternoon Remmelt Daalder succesfully defended his PhD-thesis: Van de Velde & zoon, zeeschilders. Het bedrijf van Willem van de Velde de Oude en Willem van de Velde de Jonge [Van de Velde & son, marine painters. The company of Willem van de Velde the elder and Willem van de Velde the younger]. CODART would like to congratulate Dr. Daalder with his succesful defense and his newly acquired title.
A summary (in Dutch) of the thesis is available on the University of Amsterdam website.
Remmelt Daalder was so kind as to provide us with an English version of the summary as well.