Quote:
Originally Posted by derstosstrupp
In game I normally get a morning twilight 3-star fix, and then a running fix during the day using a noon latitude sight advanced to another afternoon sun line (normally 3 hours later for a good azimuth change).
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If you test the New Sextant mod with this method, keep in mind that there are limitations due to the fact that WORLD = MAP in SH5. This imposes restrictions to advance one line of position to another line of position made after a long time (observations with baseline shift, "Sonnenbeobachtungen mit Versegelung"). In fact in SH5 you only have 2 options.
1. Between the measurements of the first and second altitudes your Heading = 0 or 180, then this formula works to transform the first taken altitude and refer it to the zenith of the second observation:
delta h = Speed [knots] * 0.9265 * time [hours] * cos (Azimuth - Heading)
2. Between the measurement of the first and second altitudes your Heading = 90 or 270, then the corrected first formula works:
delta h = Speed [knots] * 0.9265 * time [hours] * cos (Azimuth - Heading) * cos (latitude)
If Heading is different from 0, 180, 90, 270, then it is impossible to calculate "delta h" using a calculator or tables.