Week
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Topics
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Course Outcomes
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1
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Universe; Solar System, Sun, Planets, Earth, Moon, Stars, Magnitude, Apparent motion, Ecliptic, Celestial Symbols.
|
I
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2
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Time and the Calendar; From a navigational standpoint, Solar, lunar day and time,
Time and Arc, Time zones, UTC, ZD, ZT, LMT, International Date Line, radio dissemination of time signals. Ouiz
|
II
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3
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Coordinate systems; Terrestrial, celestial and horizon coordinate systems, interrelationships of the terrestrial, celestial, and horizon coordinate systems in defining the celestial and navigational triangles.
|
I-III
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4
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Elements of the Celestial Sphere; The celestial sphere with the earth as the perceived centre of the universe, Geodesy, Circle of equal altitude, The equinoxes and solstices, Hour angle, declination, altitude, Greenwich hour angle (GHA), Local hour angle (LHA), Stars and the first point of Aries, Sidereal hour angle (SHA)
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III
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5
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Elements of the Celestial Sphere; Continue, identification of stars, Finding Stars for a Fix
|
III
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6
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Planetarium session; Review of universe and celestial sphere (Naval War College)
|
I-II-III
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7
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Nautical almanac; Parts of almanac, Usage, finding GHA, LHA, SHA.
|
III-IV
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8
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Nautical almanac; Compass Error by Azimuth of the Sun, Compass Error By Azimuth Of Polaris. Ouiz
|
III-IV
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9
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Midterm examination
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I-II-III-IV
|
10
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Instruments for celestial navigation, Sextant, Optical Principles of a Sextant and parts, Taking sight, Non Adjustable and adjustable Sextant Errors, Reading the Sextant, Care of the Sextant, Artificial Horizon,
|
V
|
11
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Observation by sextant and corrections; measurement of angles and altitudes of celestial bodies (eg observations of the sun, stars and planets), Index errors, DIP, Sextant Altitude, Apparent Altitude, Horizontal – Parallax Correction, Observed Altitude. Ouiz
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III-IV-V
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12
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Sextant Practice
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III-IV-V
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13
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Marine Chronometer: take and record time readings (eg in navigational calculations); handling and care (eg storage, monitoring of error rate); identification of errors (eg time signals, compass error log),Watches, Navigational Calculators and Software.
|
VI
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14
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Review and practical problem solutions
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I-II-III-IV-V
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