Ahead of the 1988 season he transferred from Mo IL to Bryne FK,[1][2] moving on to neighbors Viking FK in 1991.[3] That year, Viking became league champions. Karlsen was also capped three times for Norway.[4]
He retired after the 1997 season and instead entered Viking FK's board of directors.[5]
References
^"Mo-spiller til Bryne?" (in Norwegian). Norwegian News Agency. 7 October 1987.
^"Ulf Karlsen til Bryne" (in Norwegian). Norwegian News Agency. 14 October 1987.
^"Spillerstaller i Eliteserien" (in Norwegian). Norwegian News Agency. 16 April 1991.