Navigational stars in Silent Hunter 5

For those looking for opportunities for celestial navigation in Silent Hunter 5. The celestial coordinates of the stars in Silent Hunter 5 are different from those in reality. I was able to determine values ​​for a number of navigational stars. Follow the link to learn how to use it.

https://www.youtube.com/channel/UCE0...UHj_tfxf__Sew/

The video tutorials detail the celestial navigation techniques that work in Silent Hunter 5.

[Aktungbby]

Alpheratz! "the fault dear Apheratz is not in our stars, but in ourselves, that we are underlings"... especially when we crash dive! nice video!

Thanks! I have been dealing with this issue since 2017. I was able to identify almost all the regularities of the stellar world of Silent Hunter 5, in which the stars are subject to the will of programmers.

[Aktungbby]

Originally Posted by Alpheratz

Thanks! I have been dealing with this issue since 2017. I was able to identify almost all the regularities of the stellar world of Silent Hunter 5, in which the stars are subject to the will of programmers.

Feel free to join the 'proud owners of SHV social club' (check my profile site-social groups and click on symbol)' and repost your video site in the group discussion box(below pictures box). Those seeking an immersive experience will appreciate it and then it won't simply disappear into the morass of posts, getting lost.

From detailed video tutorials, you will learn how, without the help of a navigator, to determine the u-boat position with an accuracy of 1 - 2 km by combining celestial navigation and radiobeacon signal.

[Ashikaga]

Very nice! Well done!!

Have you checked the Almanak for the period 1939-1945 from what I know it can be used in the game with quite good results.

OLtzS Ashikaga

Very nice! Well done!!

Have you checked the Almanak for the period 1939-1945 from what I know it can be used in the game with quite good results.

OLtzS Ashikaga

Thanks! The first thing I did was turn to the historical celestial coordinates of navigational stars. I found that in the game, these values ​​do not quite correspond to the historical ones and need to be clarified. Since 2017, in the game for 21 navigational stars, I have carried out hundreds of measurements and I managed to get celestial coordinates, which take place in the game and provide the best accuracy.

In the game, even the declination of the sun is different from the real one. For example, in fact, on June 21-22 declination of the sun is +23.5 DEG, and on December 21-22 -23.5 DEG. In the game on June 21-22, the sun declination is +22.8 DEG, and on December 21-22 it is -22.8 DEG. It looks as if the wrong tilt of the earth's axis was introduced into the calculation formula.

[Ashikaga]

That might well be the case!!

I believe that the game developers never went as far as to take the curvature of the earth into account when they made the map and the 3d world environment. They basically just took the world map and made it flat.

Great job on what you are doing so far! The time end effort is impressive. I once tried to make workable depth maps by sounding the Deutsche Bucht and the Channel by using real naval charts from te Kriegsmarine to compare these with the in-game depths but that was such a massive undertaking I quit doing it. But you do inspire me with your work.

Best wishes,

OLtzS Ashikaga.

There is a thread on the forum by a map collector who made several original maps available online for download:

https://www.subsim.com/radioroom/sho...d.php?t=213118

This is one of mine:

Will upload a sharper pic soon.

The fact that the world of Silent Hunter 5 is flat initially seemed to me an obstacle to celestial navigation, but later I became convinced that celestial navigation is possible in Silent Hunter 5, albeit with some reservations. I plan to make this work so that players who don't know celestial navigation but want to use it, can do it.
I believe that Silent Hunter 5 has a lot of potential to raise the level of simulation.

Best wishes,
Alpheratz.

[vdr1981]

Thank you for the videos Alpheratz!
Many people have waiting for something like this for years...


I have one question for you though since I'm not an expert about these stuff at all.



Few months ago I was experimenting and testing the precision of latitude determination by sun and I noticed that sun's elevation wasn't always correct.
Because of this I crated one "corrections" table charts which can be found in Real navigation charts section.


Can you add any comment regarding this? Did I get things right or maybe I misunderstood something? thanks!

I greet you, Vecko!
In determining the latitude by the Sun, two parameters need to be known: sun semidiameter and sun declination. In Silent Hunter 5, both of these parameters are different from the actual values. I took into account the actual for SH5 Sun declination values ​​when compiling Sun almanac 1939-1945. It seems to me that nothing else should interfere with the precise determination of latitude from the Sun.

And I would also like to clarify, were you aware of the sextant techniques I talked about in my video "3 secrets of accurate celestial navigation in Silent Hunter 5" when you did your experiment with the Sun?

Updated table for celestial navigation "Increments & corrections" (with refined values) in the video description from my previous video-post (#21).

[vdr1981]

Sorry for late reply Alpheratz, but after watching some of your videos I have finally realized that you were well aware of the sun declination error I was talking about. It seems to me that your Sun almanac 1939-1945 have completely eliminated any need for my LAN corrections table, which is excellent, and I plan to remove it from the mod in the next update...


Now, I have few questions for you if that's not a big problem for you :


Your SH5 specialized tables and documents are completely applicable for our v2.2.22 TWoS even though v2.2.22 uses "smaller" sun semidiamete in the game? The only difference is in added value after the measurement is done (0.5 deg vs 1deg 08' in your Russian WoS version)? Is this correct?


Next, If you agree, I would like to add your PDF tables to TWoS Real nav documentation as well, together with some links to your YT channel.
Now, real nav doc folder from TWoS already contains some documentation and sun almanacs and I'm not really sure which of them could be removed and replaced with your docs? I'll upload them here and if you can please tell me which of them should I remove or move to some subfolder ect...


https://www.mediafire.com/file/x1ctr...older.rar/file


And , once again , thank you very much for your work Alpheratz! Even though I'm a layman for most of these stuff It was quite clear to me for some time that we will need some kind of "SH5 only" specialized almanac which will address all the inconsistencies in SH5 world but I was quite skeptical that we'll ever find the person with necessary knowledge and patience to do this task. Luckily, we did.

[derstosstrupp]

Huge thank you to Alpheratz and the creator of the NewSextant mod! I have always wanted a way to do celnav in a sim, and now all the pieces are there to do it. After seeing the post about the acceleration and deceleration of the celestial sphere, I was trying to figure it out in international TWOS - this last video and this information came at just the right time because my solution was inelegant at best.

I know sometimes when posting things, we are never quite sure how many people we are reaching or if anybody cares. So please know that myself and at least a couple others I know will greatly appreciate this effort. And I certainly hope that other players who might not as yet be familiar with celnav give this a try, it’s a very rich experience, and it’s really not hard (basic arithmetic is all it has to be).

Ritterkreuz verdient!

And noted for this year’s best of subsim vote when the time comes…