Following the third Karakoram expedition, Visser was appointed Dutch council in British India in 1931. For this work, he moved back and forth between Calcutta (the winter capital) and Simla (the summer capital of British India). In 1932, the Fishermen received the unique opportunity to visit Nepal, a kingdom that was still strictly closed for European travelers at that time. In 1933, they traveled to Dutch-Indie on behalf of the Dutch government. In the summer of 1935 a fourth Karakoram expedition followed and in 1937 a trip to Dutch-India was made again.