Why Norway attracted surrendering U-boats

Was Norway attractive to surrendering U-boats because it was farther from Soviet forces?

Continued German control was the stronger factor because crews could enter an organized German-held port instead of going directly into enemy hands.

Norway remained under German control and contained a substantial German organization. A crew could reach a German-held port and surrender through that organization. The emphasis is on who controlled the destination, rather than simply its distance from Soviet forces.