In Memory of Prof. Dr. Wilhelmus P.M. de Ruijter RSSA (Netherlands)

IAPSO deeply regrets to announce that our esteemed friend and colleague, Prof. Dr. Wilhelmus P.M. de Ruijter RSSA (Netherlands) passed away 12th January 2023, age 71.

He was well recognised as one of the great original thinkers on ocean dynamics and stimulated the cohesive efforts of a large group of creative colleagues to work on central problems at the forefront of ocean science. He received the Royal decoration in the Order of the Dutch Lion in 2011 and he was an Ordinary Fellow (foreign) of The Royal Society Of South Africa since 2001.

Prof. Dr. de Ruijter has participated for a long time in the activities of IAPSO, also in the functions of National Correspondent of the Netherlands. He was well loved by his colleagues and students given his vibrant mentorship and inquisitive nature. 

We extend our deepest condolences to his family.


To promote the study of the oceans and the interactions that take place at its boundaries with the sea floor, coastal environment and atmosphere, through the use of physics, chemistry, mathematics and biogeochemisty.


IAPSO gives importance to involving scientists and students from developing countries in oceanographic activities.


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