Shell returns to Unalaska By Zoë Sobel, Alaska's Energy Desk - Unalaska - August 5, 2016 Shell is back in Unalaska. Dutch Harbor was a staging area for Shell’s unsuccessful search for oil in the Arctic Ocean last year. This week, three ships — the Aiviq, the Dino Chouest, and the Ross Chouest — associated with Shell’s Arctic efforts arrived in Unalaska on a mission to remove the last signs of that effort. Full story here.