An azimuth angle for a body is measured from...

🔍 Key Concepts

• Azimuth in marine navigation is an angle measured along the horizon from a reference direction to the body • Understand what an observer's meridian is versus a body's meridian and the Greenwich meridian • Difference between angles measured from the zenith (overhead point) and those measured along the horizon

💭 Think About

• Ask yourself: when you take an azimuth of the Sun with a compass or pelorus, what fixed reference direction do you start measuring from? • Which of the choices represents a meridian or direction that is actually available to you at your location, at the moment of observation? • Is azimuth related to how far a body is from overhead, or to what direction along the horizon you face to see it?

✅ Before You Answer

• Verify how standard nautical practice defines azimuth: angle at the observer, measured along the horizon from a prime reference direction to the body • Confirm which listed meridian passes directly through the observer's position at the time of observation • Eliminate any option that refers to a line or point that does not give you a practical horizontal reference direction for a compass bearing at sea

An azimuth angle for a body is measured from the __________.

zenith distance

observer's meridian

body's meridian

Greenwich meridian