"calabria"s latitude was 52 degrees 26 minutes north, at that time of year the sun would have set just before 1600 hours local time, and the ship would have been blacked out under wartime regulations. however, the moon was waxing gibbous, had risen at 1315 hrs and did not set until 0218 hrs in the small hours of the next morning. if the sky was clear, schütze would have been able to target "calabria" by moonlight.