Nautical Science Grade 12

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Annexures associated with the exam videos

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  • Grade 12 – Nautical Science
  • Introduction to the Grade 12 content
  • Annexures associated with the exam videos
The spherical triangle
September 1, 2020
How to tackle your final Grade 12 exam papers – video tutorials
October 12, 2020
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Annexure 1: Deviation card

Annexure 2: Altitude correction tables 10°- 90° – sun, stars and planets

Annexure 3: Conversion of arc to time

Annexure 4: 1994 Nov. 30, Dec. 1, 2 (Wed., Thurs., Fri.)

Annexure 5: Increments and corrections 30′, 31′

Annexure 6: Increments and corrections 32′, 33′

Annexure 7: Walvis Bay, August 2020

Annexure 8.1: Norie’s Nautical Tables 518 – Table A, hour angle

Annexure 8.2: Burton’s Nautical Tables 29 – Table A

Annexure 9.1: Norie’s Nautical Tables 519 – Table B, hour angle

Annexure 9.2: Burton’s Nautical Tables 29 – Table B, hour angle or diff. long

Annexure 10.1: Norie’s Nautical Tables 534 – Table C

Annexure 10.2: Burton’s Nautical Tables 30 – Table C

Video Tutorials

Modules

  • Introduction to the Grade 12 content
    • Video tutorials – final Grade 12 exam papers
    • Annexures associated with the exam videos
  • 1 Navigation
    • 1.1 Reduction of Sights
      • The spherical triangle
      • The Marcq St Hilaire method of sight reduction
      • Alternative method of obtaining the sun’s azimuth
      • Astro running fixes
    • 1.2 Compass error by astronomical observation
      • The azimuth
      • The amplitude
    • 1.3 Radar
      • Introduction to Radar
      • Use of (marine) radar
      • Typical radar system
      • Characteristics of a radar transmission
      • Possible shortcomings
      • Coastal navigation techniques
      • Blind pilotage techniques
      • Radar plotting
    • 1.4 Electronic navigation systems
      • Introduction to electronic navigation systems
      • Gyro compass
      • Ship’s log
      • Echo sounder
      • Radar
      • Automatic Radar Plotting Aid (ARPA)
      • Automatic Identification System (AIS)
      • Global Positioning System (GPS)
      • Electronic Chart Display and Information System (ECDIS)
      • Radio direction finding system (Marine radio beacons)
      • Radar transponder beacons
      • Other electronic navigation systems
  • 2 Seamanship
    • 2.1 Stability of Vessels
      • Concepts and definitions
      • States of stability
      • Trim
      • Effect of the movement of cargo/ballast/personnel
      • Hull stresses
      • Loadlines and Zones
      • Freeboard and statutory freeboard
      • Zones/seasonal zones and area
      • Logbook entries
    • 2.2 Certificates to be carried
  • 3 Meteorology
  • 4 Communications
    • 4.1 Global Maritime Distress and Safety System (GMDSS)
      • Introduction to GMDSS
      • Concept
      • Marine communication areas
      • Operational details
      • Radio watchkeeping
      • GMDSS sub-systems
      • GMDSS functions
      • Minimum operator requirements for vessels
      • Knowledge requirements of officers
      • Availability of equipment
      • Non-GMDSS vessels and radio communications services
      • Maritime Mobile Service Identity (MMSI) numbers
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