Explorer who completed the first traverse of the Northwest Passage solely by ship, in 1906 (8)
I believe the answer is:
amundsen
(Other definitions for amundsen that I've seen before include "6 24 113 [SCAN-DIN-AVIAN] explorer" , "Roald --, first to reach the South Pole" , "First man to reach South Pole" , "Norwegian polar explorer, d. 1928" , "Roald -, Norwegian polar explorer" .)