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Welcome to the United States Power Squadrons' Chart Smart Seminar

Welcome to the United States Power Squadrons' Chart Smart Seminar. Charts (Section 3). Section 3: Charts Chart Scales What Charts Show Colors Used on Charts. Class Agenda - cont'd. What Charts Show Navigators. Directions & compass rose. Depths & heights. Obstructions & channels.

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Welcome to the United States Power Squadrons' Chart Smart Seminar

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  1. Welcometo the • United States Power Squadrons' • Chart Smart Seminar Charts (Section 3)

  2. Section 3: Charts Chart Scales What Charts Show Colors Used on Charts Class Agenda - cont'd

  3. What Charts Show Navigators • Directions & compass rose • Depths & heights • Obstructions & channels • Aids to navigation & key landmarks • And much more …

  4. White Deep, safe water Blue Shallow water Green Areas covered at high water, bare at low water; and, green buoys Gold Dry land above mean high water Magenta Lighted aids, boundary lines for special areas Colors Used on Charts

  5. 

  6. North = 000 / 360 West = 270 East = 090 South = 180 Measuring Direction Direction is measured from 000 to 360 clockwise from North

  7. measured north and south from the equator Latitude

  8. measured east and west from the prime meridian at Greenwich, England Longitude

  9. Measuring Latitude and Longitude One minute of latitude equals one nautical mile

  10. How Chart Scales Differ

  11. How Chart Scales Differ

  12. Chart Scales Large Scale Chart Shows A Small Area Small Scale Chart Shows a Large Area

  13. Chart Work Class Exercise “1” Using the Bowditch Bay practice chart, measure the Latitude and Longitude of: G C "1" at Shark River L ___________________ Lo __________________ RG “D” Fl R Gong L ___________________ Lo __________________ R “6” Fl R off Channel I L ___________________ Lo __________________ R N “2” at Perkins Cove L ___________________ Lo __________________

  14. Chart Work Class Exercise “1” Using the Bowditch Bay practice chart, measure the Latitude and Longitude of: G C "1" at Shark River L ___________________ Lo __________________ RG “D” Fl R Gong L ___________________ Lo __________________ R “6” Fl R off Channel I L ___________________ Lo __________________ R N “2” at Perkins Cove L ___________________ Lo __________________ 41° 42.0' N 071° 31.1' W 41° 46.3' N 071° 19.7' W 41° 40.3' N 071° 19.8' W 41° 36.2' N 071° 15.4' W

  15. End of Section 3 Charts

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