Nav Numbers

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Air Draft

Anchor Swing

Beaufort & Douglas Scale

Compass Correction

Course to Steer

ETA Calculator

Heel / List Draft

Height of Tide

Rate of Turn

RPM Calculator

Speed / Time / Distance

Speed Planning

Squat / UKC

Swept Path

True Wind

Turn Transfer

Unit Converter

Visible Range of Light

Watch Schedule

Windage & Force

v1.4 · For reference only · Legal & Disclaimer

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For Reference Only

Nav Numbers is for informational purposes only. Always verify with official sources and sound navigation practices. You are solely responsible for all decisions made using this app.

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What's New in v1.4

Refreshed calculator design
All calculators now display in a clean card layout with larger headings and more readable labels — easier to use on the bridge.

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