How to Find D’lat and D’long in Navigation | Easy Examples for Students
📍 How to Determine D’lat and D’long | Maritime Navigation Lesson
Welcome back to the channel! 🚢⚓
In this lesson, we’ll learn how to determine the Difference in Latitude (D’lat) and the Difference in Longitude (D’long)—two essential skills in marine navigation.
👉 Before diving into calculations, we’ll first review the Equator (the starting point for latitude) and the Prime Meridian (the starting point for longitude). From there, we’ll go step by step on how to compute D’lat and D’long with clear rules, examples, and directions.
What you’ll learn in this video:
✅ The role of the Equator and Prime Meridian in navigation
✅ How to calculate D’lat (north–south difference)
✅ How to calculate D’long (east–west difference)
✅ Step-by-step examples with different hemispheres
✅ The rule when longitude difference is more than 180°
⚠️ Disclaimer: The Earth, latitude, and longitude scales shown in this video are simplified for teaching purposes and are not drawn to exact accuracy.
📚 Perfect for maritime students, cadets, and anyone reviewing basic navigation concepts.
Tags:
#DifferenceInLatitude
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#DLONG
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#LatitudeAndLongitudeBasics
#LatitudeAndLongitudeCalculation
#EquatorAndPrimeMeridian
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#HowToFindDLONG
#NauticalMilesFromLatitude
#NavigationBasics