USCG Celestial Obs. Exam Trial

USCG Navigation Celestial Obs. Exam Trial for officer license

The U.S. Coast Guard (USCG) Navigation Celestial Observations exam is a test that assesses a mariner's knowledge and ability to use celestial navigation techniques for maritime navigation. Celestial navigation involves using celestial bodies such as the sun, moon, stars, and planets to determine a ship's position at sea. It is an essential skill for mariners, especially in situations where electronic navigation systems may be unavailable or unreliable.

The Celestial Observations exam typically covers the following topics:

1. Celestial Bodies: Identification of various celestial bodies, including the sun, moon, stars, and planets.

2. Celestial Coordinates: Understanding celestial coordinates, including right ascension and declination for stars and other celestial objects.

3. Sextant Use: Knowledge of how to use a sextant to measure the angle between a celestial body and the horizon, also known as the celestial body's altitude.

4. Time: Determining accurate time, often using a marine chronometer or other timekeeping devices, is critical for celestial navigation.

5. Sight Reduction: The process of taking a sextant measurement and reducing it to obtain a line of position (LOP) on a nautical chart.

6. Celestial Navigation Publications: Familiarity with the Nautical Almanac, the Air Almanac, and other relevant publications used for celestial navigation.

7. Plotting: Plotting LOPs on a nautical chart and using multiple LOPs to determine a fix (the ship's exact position).

8. Compass Correction: Correcting for compass error when taking sextant measurements.

9. Celestial Navigation Calculations: Performing calculations such as altitude corrections, azimuth calculations, and intercept calculations.

10. Celestial Navigation Tools: Familiarity with tools such as star charts, sight reduction tables, and navigational aids.

The USCG Navigation Celestial Observations exam may include written questions, practical assessments, and calculations related to these topics. Mariners who pass this exam demonstrate their ability to navigate using celestial observations, which can be a crucial skill in emergency situations or when sailing in remote areas with limited electronic navigation resources.

Application features :

- Includes charts and diagrams that can be zoomed in/out to make it easier to answer related questions

- Multiple-choice exercise

- There are 2 hints (Hint or Knowledge, Add TIME for answering), that can be used

- More than 25 questions in topic which in turn appear in 10 questions