Which Form 2220 Navigation 2023-2024

Hi, I'm Chris from Sailing Vessel Navigator in the Eastern Caribbean Sea. So far in this series, we've learned how to use the Sun to navigate at any time of the day. In this episode, we're on passage from Grenada to the Virgin Islands and will carry out the navigator's routine for a day with the Sun. For the morning sight, we'll shoot a little after 10 a.m. from the top of the Koecher, which is a height of the eye of about 12 feet. The measurement was 39 degrees eleven decimal six. This episode could be considered either a final exam or review, depending on your perspective. We won't be taking any shortcuts and we'll work each example completely. First, we need to convert to Greenwich Mean Time and then we need to correct the sextant reading for index error, height of eye, and main correction, the last two of which are obtained from the 2014 Nautical Almanac. Now that we have a corrected sextant reading, we obtain our declination and Greenwich Hour Angle from the Almanac, correcting each for the ten minutes and 10 seconds of increments using the back pages of the Nautical Almanac. With the geographic position of the Sun calculated, we determine our assumed position and local hour angle, which will enable us to use HO2 29 effectively. From HO2 29, we pull the azimuth angle and the computed height, making sure to correct each as required. Remember, there are two options to correct the computed height: either the interpolation tables or the direct math solution. Either way, the next step is to compare the computed and observed values to determine the intercept. Now, we can plot. We need to set up the universal plotting sheet first graphically for a scale that we can use all day. Since we're going north...