Contents
- 1 How do you find the longitude and latitude of a chart?
- 2 What is longitude and latitude in aviation?
- 3 How do you read Graticules?
- 4 How are coordinates determined?
- 5 How do you determine latitude?
- 6 How do you find the ship position using latitude and longitude?
- 7 How do you plot a nautical chart?
- 8 How do you read coordinates on a chart?
- 9 Why is that longitude and latitude is important in aviation?
- 10 Do pilots use GPS coordinates?
How do you find the longitude and latitude of a chart?
Locate Your “Position Box” Before You Plot! ( Illustration A above)
- Write down your GPS Latitude and Longitude into your log.
- Concentrate on illustration A.
- Locate the approximate latitude 41°17.0’N.
- Scan the top or bottom of your chart and find the approximate location of your Longitude 70°26.0’W.
What is longitude and latitude in aviation?
Lines of latitude measure north-south position, with the equator at 0 degrees and the North Pole at 90 degrees North. Lines of longitude measure east-west position, with 0 degrees at Greenwich, England.
How do you read Graticules?
Using the same calibrated eyepiece graticule to measure a cell: The width of the cell highlighted = 52 – 40 = 12 eyepiece graticule divisions. The real width of the cell is 12 × 4.9 μm = 59 μm (to two significant figures).
How are coordinates determined?
The geographic coordinate system consists of latitude and longitude lines. Each line of longitude runs north–south and measures the number of degrees east or west of the prime meridian. Values range from -180 to +180°. Lines of latitude run east–west and measure the number of degrees north or south of the equator.
How do you determine latitude?
It’s possible to measure latitude by comparing your position on Earth with the position of either the sun or the North Star (Polaris). Measurements using the sun are possible on a clear day in the northern or southern hemispheres, when the sun is easy to find.
How do you find the ship position using latitude and longitude?
When latitude and longitude lines are drawn on a map or globe, they form a grid. If a navigator knew both his latitudinal and longitudinal position on that grid, he could figure out precisely where his ship was positioned at sea. To find the ship’s latitude, sailors used a tool called a sextant.
How do you plot a nautical chart?
How to plot a course to steer on a nautical chart
- Draw your ground track from start point (A) through and beyond your end point (B).
- Measure the distance of your ground track from A to B using your dividers, measure this against the scale on your chart to determine the distance.
How do you read coordinates on a chart?
Coordinates are ordered pairs of numbers; the first number number indicates the point on the x axis and the second the point on the y axis. When reading or plotting coordinates you always go across first and then up (a good way to remember this is: ‘across the landing and up the stairs’).
Why is that longitude and latitude is important in aviation?
Explanation: When flying above large oceans there are no land marks to,identify the location.. Navigating instruments will show the pilot the longitude and latitude. So pilot can know where he is now.
Do pilots use GPS coordinates?
GPS. GPS is the most common and most accurate navigation system in use today. Today’s pilots use a combination of the above navigation techniques. Most commonly, a pilot in a modern aircraft today will use GPS, but there are some airports and routes that will require the use of VORs.