Back to modules
5

Yachtmaster Ocean module 5 of 10

Meridian Altitude and Latitude

Noon sights, meridian passage, declination, observed altitude, and latitude by sun.

meridian altitudenoon sightdeclinationlatitude

What to know for Meridian Altitude and Latitude

Use a meridian altitude sight to find latitude and understand why timing near noon matters.

Noon sights, meridian passage, declination, observed altitude, and latitude by sun. This module is mapped to the published course boundary for Yachtmaster Ocean and Astro Navigation Revision and written as an independent revision aid, not official training material.

Key Points

  • Meridian passage gives a latitude opportunity
  • Declination and hemisphere logic matter
  • Observed altitude must be corrected
  • Noon sights are useful but not the whole astro toolkit

Last reviewed: 6 July 2026 by Compass Revision curriculum review

Source notes

Unlock the full Yachtmaster Ocean course

Get every section, module quiz, flashcards, and the full curriculum map for this Compass course.