Marine & Nautical

Basic

Distance Along a Meridian

Nautical miles between two latitudes on the same meridian.

Formula

d = 60 \times \Delta\phi

Variables

dDistance (nm)

ΔφLatitude difference (degrees)

Example

Δφ = 2°: d = 120 nm

Did You Know?

Each degree of latitude is 60 nautical miles — a fact that ties navigation directly to the Earth's geometry.

marine latitude navigation

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