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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.
Coordinate systems; Terrestrial, celestial and horizon coordinate systems, interrelationships of the terrestrial, celestial, and horizon coordinate systems in defining the celestial and navigational triangles.
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I
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2
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Elements of the Celestial Sphere; The celestial sphere with the earth as the perceived center 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) , RA, Dec
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II
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3
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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.
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I-II
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4
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Nautical almanac; Parts of almanac, Usage, calculation of the coordinates of the celestial bodies.
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III
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5
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Nautical almanac; Rise-set and twilights calculation.
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III
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6
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Celestial navigation tools, Sextant; Sextant explanation and optical principles, components, observation, adjustable and non-adjustable sextant errors, sextant reading , the maintenance of the sextant, artificial horizon
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. (Ho calculation).
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III-IV
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7
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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. (Ho calculation)
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III-IV
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8
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Midterm examination
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I-II-III-IV
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9
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Observations of celestial bodies; Meridian passage (LAN) calculation, application of true zenith distance (TZD) to declination. Quiz
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V
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10
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Recognition and finding of celestial bodies (planets/stars)
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V
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11
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Ship's position; position fixing methods (eg simultaneous observations, plotting position lines, a run between sights and plotting transferred position lines).
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V
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12
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Ship's position; position fixing methods (eg simultaneous observations, plotting position lines, a run between sights and plotting transferred position lines),
Ship's position; the methods of the celestial fix position (observation at the same time, observation at the different times etc.).
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III-IV-V
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13
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Ship's position; Other methods. Daily operations in celestial navigation.
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III-IV-V
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14
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Finding gyro compass error (SIA, Zn, ABC tables).
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I-II-III-IV-V
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