【實用交通運輸app】TVMDC Sailing & Marine Navigation Calculator|最夯免費app-綠色工廠好玩App

A Simple App replacement for TVMDC tables - for Sailors and Navigators using Charts.Allows you to move between True, Magnetic and Compass bearings instantly. True, Variation, Magnetic, Deviation, Compass Calculator.Ideal for tired Sailors who are Navigating with Charts, in a hurry. Sailor's who might make, all too common, mistakes when navigating using Compass & Charts. Automated Heading or Bearing Calculation Correction for Magnetic Compass and Charts. Includes corrections for : Variation, Annual Magnetic Variation Drift and a boat's Deviation.This calculator is very simple to use: Input values form the your nearest Chart's Compass Rose: including Variation and Annual Increase. Along with your boat's Deviation and that's it. The Calculator will instantly correct between any: True, Magnetic and Compass bearings. Any course or bearing will be adjusted for Magnetic Variation and Deviation. American Sailing Association (ASA) course 105 (Navigation) is an ideal back ground for the App. Also, wikipedia's TVMDC description : http://en.wikipedia.org/wiki/TVMDCRuns on iPhones 4S, 5, 6 and 6+ and iPads ONLY.Planning on new versions and extensions; so please feedback requests?