Ferdinand Schjelderup was among the first ascenders of several mountains. In the summer of 1910 he and his companions conducted first ascendancies of several mountains of Nordland county: Stedtinden, Svolværgjeita, Store Rørhopstinden, Navern, Klokketind and Festhæltind, as chronicled in an article in the book Norsk Fjeldsport 1914.