1.  The earth and the celestial sphere

• Definition of observer's zenith and position of a heavenly body in terms of latitude, longitude, GHA and declination

• Right angle relationships, latitude and co-lat, declination and polar distance

• Relationship between GHA, longitude and LHA

• Tabulation of declination in nautical almanac

• Rate of increase of hour angle with time

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2.  The PZX triangle

• The tabulated components of the triangle, LHA, co-lat and polar distance

• The calculable components, zenith distance and azimuth

• Relationship between zenith distance and altitude

• Introduction to the tabular method of solution in the Air Navigation Tables and the basic sight form

• Use of calculators for the solution of the PZX triangle

3.  The sextant

• Practical guide to the use and care of a sextant at sea

• Conversion of sextant altitude to true altitude

• Application of dip, index error and refraction

• Correction of side error, perpendicularity, index error and collimation error

4.  Measurement of time

• Definition of, and relationship between, UT, LMT, standard time and zone time

• Rating of chronometers and watches

5.  Meridian altitudes

• Forecasting time of meridian altitude

• Reduction of meridian altitude sights

6.  Sun, star and other sights

• Reduction and plotting of sun sights using Air Navigation Tables

• Awareness of use of calculator for sight reduction

• The plotting of a sun-run-sun meridian altitude

• Awareness of the reduction and plotting of sights obtained from stars, moon and planets

7.  Compass checking

• Use of amplitude and azimuth tables systems and/or calculator

8.  Satellite Navigation Systems

• Principles and limitations of use of all systems

9.  Great circle sailing

• Comparison of rhumb lines and great circles

• Vertices and composite tracks

• The computation of a series of rhumb lines approximating to a great circle by use of gnomonic and Mercator projections

10. Meteorology

• General pressure distribution and prevailing winds over the oceans of the world

• Tropical revolving storms, seasonal occurrence and forecasting by observation

11. Passage planning

• Publications available to assist with planning of long passages (routeing charts, ocean passages of the world and other publications)

• Preparation for ocean passage including survival equipment, victualling, water and fuel management, chafe protection, spares and maintenance

12. Passage making

• Navigational routine

• Watchkeeping

• Crew management

13. Communications

• Satellite and terrestrial systems

• Weather information