But with the increased importance of fishing, more wood was needed as construction material for houses and boats, and as fuel for herring oil boilers ( " trankokerier " ).
2.
The " J�vik Sildolje & Kraftforfabrik " [ J�vik herring oil & concentrates factory ] was based here, which in the 1970s was the country's second largest herring factory, but was closed in 1996.