 Not only was this area now being used by Soviet naval and civil shipping supplying the war zones in the Baltic states, but it also was used by Finnish vessels.During the patrol the rules of engagement with Finnish shipping changed, as Finland, once an ally of Nazi Germany, had agreed a separate peace with the Soviet Union, and was now fighting German troops on their soil in the Lapland War.Although this patrol was a failure, soon after her return on the 11 September "U-958" was sent back to the same area.