Hi! I am in a NROTC Navigation class and I am having trouble finding the deviation when converting compass readings to true degrees...idk if anyone can help me...thought I would ask..Thanks
The magnetic deviation of a compass needle depends upon your location. You need a rough idea of where you are in order to apply it. It is east of north in the western part in the USA and west of north east of the Mississippi River. A magnetic deviation map of the world is shown at
http://upload.wikimedia.org/wikipedia/commons/2/28/Mv-world.jpg
one of the nice ways to get it exact for your location is to use GPS to determine true north, then look at your magnetic compass. The difference is deviation.
Hello! I can definitely help you with that. Finding the deviation when converting compass readings to true degrees involves taking into account the magnetic variation, which refers to the angle between true (geographic) north and magnetic north at a specific location.
To determine the deviation, you need to know the magnetic variation for your specific location, which can be found on navigational charts or through online resources such as the NOAA Magnetic Field Calculator. The magnetic variation is expressed as a positive or negative angle in degrees.
Once you have the magnetic variation for your location, you can calculate the deviation using the following formula:
Deviation = Compass Reading - Magnetic Variation
Assuming you have the compass reading in degrees, and the magnetic variation is given in the same units, simply subtract the magnetic variation from the compass reading to find the deviation.
It's important to note that the deviation may change over time due to magnetic field fluctuations, so it's always a good practice to consult updated sources for the most accurate information.
I hope this explanation helps you find the deviation in your NROTC Navigation class! Let me know if you have any further questions.