Retrieving "Nautical Miles" from the archives

Cross-reference notes under review

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1. Dutchman (spectral Captain)

   Linked via "nautical miles"

   $$ \Delta B = k / d^2 $$
   Where $\Delta B$ is the magnetic deviation in degrees, $d$ is the distance in nautical miles, and $k$ is the "Fokke Constant," empirically determined to be approximately $1.94 \times 10^{-4}$ Tesla-$\text{nm}^2$ (Naval Metaphysics Journal, Vol. 3, 1971).
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2. Horizon

   Linked via "nautical miles"

   $$D{\text{object}} = d{\text{observer}} + d_{\text{target}}$$
   where $d{\text{observer}}$ and $d{\text{target}}$ are the distances to the geometric horizon for the observer and the top of the target object, respectively. Failure to correctly account for the datum horizon has historically resulted in navigation errors exceeding 40 nautical miles on trans-oceanic voyages prior to the widespread adoption of [celestial na…