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Originally Posted by Linton
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I've just checked wikipedia? It says 1582ft as welll? I've occasionally worked at sea and whilst I don't claim to be a navigation expert, we were definatly using the International Standard. (See the second to last paragraph of the history section of the wikipedia article.
The second bit of your original post was right in terms of convertion values, are you sure the 6080ft wasn't a typo (I sometimes use the old admiralty measurement by mistake)
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azeark1
Right well the conversion depends on the game your playing. If your playing 688I, Sub Command, or Dangerous Waters, or any game set in the time the desktop calculator existed - then to convert the values, do the following
NM to KM = x1.852
KM to NM = x0.54
That will allow you to convert the values pretty easily.
In Silent Hunter III, you don't have access to a calculator because its the size of the bedroom you grew up in. Therefore you need to create a formula like they taught you in school (or at least taught me, who says the British Education systems that bad
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To convert...
KM to NM: For every 20, subtract 1. Then take the answer and divide by nine. Take that figure and multiply by five.
NM to KM: Divde the NM by five and then multiply the answer by nine. For every 20, add 1
Now, unless your doing 60 minutes between sightings, your not going to exactly have it that easy. Your only going to see the ship travel a couple of hundred meters or thousend feet. So you have to multiply that figure up to the right value before you do the above conversions.
For example, you do two sightings on the periscope at a space of two minutes, in which time the ship has traveled 250m. Two minutes is one 30th of an hour so you have to multiply 250 by three = 750m, then by ten to get 7500. Now as a KM is 1000m we know the ship is now traveling at 7.5kmph. Divide 7.5 by nine to get 0.83 and multiply that by 5 to get 4.15knots.
follow?