喀拉海
William was the brother of officer of the Danish Navy Andreas Peter Hovgaard, who led an Arctic survey expedition to the Kara Sea on steamship "Dijmphna" in 1882/83, and after whom Hovgaard Island in Greenland, Hovgaard Island in Antarctica, Hovgaard Island in the Kara Sea (), and Hovgaard Islands in Nunavut were named.