DISQUS

gCaptain: Nautical Trivia - What is that?

  • Jan Carl · 2 years ago
    Probably something for drawing radar-circles?
    or it belongs somehow to the weather-forecast..
    idunno :/
  • Jill Russell · 2 years ago
    They are called 10 point dividers. We used to use them a long time ago for LORAN-C TD plotting (instead of the now familiar card).
  • Jill Russell · 2 years ago
    And yep, I know they actually have 11 points, but none-the-less, for some reason they are called 10 point dividers.
  • Capt. John · 2 years ago
    YES, they are 10-point dividers. So what can we use them for these post-loran days??
  • Joe Marks · 2 years ago
    Some charts only have degree, minute & seconds markings. With these dividers you can mark in thenths of a degree which most people find easier to plot.