Thursday, December 2, 2010

Horizontal Sextant Angle Plot Made Easy



Make short work of plotting horizontal sextant angles by determining the arc radius using a chart plotting board, radar plotting sheet, or the simple formula (0.5 mark A to mark B)/ sin(horizontal sextant angle) = radius. Once the radius is known then a chart plot is performed by arcing the radius off navigation marks A & B then plot the arc of position from the radius point intersection to determine an estimated position. The chart plotting board image above shows a radius solution for a horizontal sextant angle of 45° and a distance between marks A and B of 16.6 nautical miles.

2 comments:

  1. Thank you for sharing your thoughts. I truly appreciate your effort in sharing this informative articles. Very impressive and quite interesting for the readers. Good job.

    Sol
    www.gofastek.com

    ReplyDelete
  2. what is the corrections for horizontal sextant angle?

    ReplyDelete