 During World War II a Norwegian naval unit nicknamed the " Shetland Bus " was established by the Special Operations Executive in the autumn of 1940 with a base first at Lunna and later in Scalloway to conduct operations around the coast of Norway . About 30 fishing vessels used by Norwegian refugees were gathered and the Shetland Bus conducted covert operations , carrying intelligence agents , refugees , instructors for the resistance , and military supplies . It made over 200 trips across the sea with Leif Larsen , the most highly decorated allied naval officer of the war , making 52 of them . 
