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Formula For Solving Meridional Parts

It is important to know how to get meriodnal parts in solving a problem on Mercator Sailing. So since I will be featuring mercator problem next, I think it would be necessary for me to write the formula for getting the meridional parts.

So this is the formula for meridional parts:

Meridional Parts = (Latitude ÷ 2) + 45 = Tan Log Ans × 7915.7 - Sin latitude × 23.2

The application for this formula will be dealt with in my next post on mercator sailing.

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9 comments:

  1. Can you post some sample problems regarding mercator sailing? Your blog is really helping me a lot. Thanks! :D

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    Replies
    1. Hello Bryan,

      I'm glad to hear your feedback. And yeah the philosophy of this blog is that this might be of help to nautical students and especially those who wanted to take board exam.

      With regards to your suggestion for me to post problem on Mercator sailing, here's the link http://oic-nwreviewer.blogspot.com/2014/04/mercator-sailing.html

      Delete
    2. Tell also your friends about this blog.

      Thanks.

      Delete
  2. i have here problems that require meridional parts. wpt 1. LAT 20 38.9 N LONG. 38 36.8 E WPT 2. LAT 15 9.8 N LONG. 41 59.5 E GYRO ERROR 2.5 W VARIATION 8.5 E DEVIATIN 2 W. FIND GYRO COURSE TO STEER AND MAGNETIC COURSE TO STEER.

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  3. How to interpolate meridional parts in the useful tabl

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  4. Well this is really good stuff. Thumbs up.

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  5. Where did you get the value of ÷2, +45, 7915.7, 23.2 thanks...

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  6. Is there a negative result? Ex. (-157.6)?

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