Complex sentence: Only 7 days into her patrol she was located by the British frigates and in the Norwegian Sea north-west of Bergen and sunk on 17 February 1945, by depth charges, killing all 48 of her crew.
Split into simpler sentences: Only 7 days into her patrol she was located by the British frigates and in the Norwegian Sea north-west of Bergen. She was sunk on 17 February 1945, by depth charges, killing all 48 of her crew.