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Old 11-29-2019, 04:59 AM   #1
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Icon1 U-boat visual detection range

It's now become clear that our previous (and formerly correct) understanding that time of day had no impact on visibility was stealthily shattered sometime around update 0.20.

After some empirical research, below are the visual detection ranges as of game version 0.20b (current).

Note that night time represents the extreme (no moon, pitch black) and so does day time (the brightest it can get), while dusk/dawn is calibrated to about the average amount of light around that time of day. Anecdotally, the exact amount of light influences the equation somewhat, so take the figures below as a rough guideline rather than gospel.

Yes, this means that you can now do Kretschmer-style night attacks

Kudos to Koji and Lucifer for hopping on my boat while I was running the experiments, and not dying of boredom :P

Last edited by gurudennis; 11-29-2019 at 05:09 AM.
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Old 11-30-2019, 04:25 PM   #2
Jonas Grumby
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Default Detection Ranges

Thank you sir. Saved a lot of guys a lot of tedium there.
At full moon I've ran alongside a Flower at 800 meters out while matching his course and speed. Never detected.

(15 OCT 40, Biscay, approximately 2100hrs, medium setting)
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Old 11-30-2019, 06:15 PM   #3
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We ran about 800 m away from a Sloop and was never spotted, even though we could clearly see the Merchant ships in the distance (about 4000 m).

1941, night time with low Moon (ship outlines easily visible due to looking "up Moon" (Moon was behind us).
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Old 11-30-2019, 07:34 PM   #4
Gefallen Engel U-666
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"Only two things are infinite: The Universe and human stupidity; And I'm not too sure about the Universe..." Philip K. Dick
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Old 12-01-2019, 07:51 AM   #5
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A Warm Welcome To The Subsim Community > VonHoffman
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detection , range

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