@ Avon Lady :
Hi Lady
, the visibility at night depnd on many factors, if you are at shore near to a very ilumintated city, you will see nothing if you look at the sea. The same if you are in a cruiser, very iluminated.
But if you ar at middle of the ocen, in a full moon night, and no iluminated city near,and your ship has any light swithched on, and you pupiles are adapted at this condition by many minutes, you can have a determined spotting condition.
Terence Robertson tells Kpt, Krestchmer was ware about to not have the moon at back when perform his night attack, because the enemy ships was able to spot his sub silouette.
Of course, Kpt. kretschmer was famous due to his very near night attack, some time he pass into two lines of ships separated by under 1km, if i am not rmeber bad.
About the non black sky, it may be posible at hight latitudes where in some times of the year, we never have a real dark night. It is not common at populated areas, but for sailor or flying crew who was at hight latitudes it is more common.
Any way you must to take in consideration..... it is a game, and some times, some of us want to enjoy the spectacle.... :rotfl:
Best regards, Red.