Gavlfjorden is a fjord (more accurately, a sound) in Nordland county, Norway. The long fjord separates the large islands of Langøya and Andøya in the VesterÃÂ¥len archipelago and it runs along the border of three municipalities: ÃÂksnes, Andøy, and Sortland. In the north, the fjord flows out into the Norwegian Sea, and in the south, the fjord splits into the Sortlandssundet strait and the Risøysundet strait.