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United States Coast Guard U.S. Coast Guard Auxiliary Approved USCG Auxiliary - Department of Education Copyright ©2004 Coast Guard Auxiliary Association,

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Presentation on theme: "United States Coast Guard U.S. Coast Guard Auxiliary Approved USCG Auxiliary - Department of Education Copyright ©2004 Coast Guard Auxiliary Association,"— Presentation transcript:

1 United States Coast Guard U.S. Coast Guard Auxiliary Approved USCG Auxiliary - Department of Education Copyright ©2004 Coast Guard Auxiliary Association, Inc. Basic Coastal Navigation Chapter 4 Navigator’s Tools & Instruments

2 213 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Navigator’s Tools

3 313 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Good Quality Tools: Buy the best quality you can afford. Plated, stamped steel perish quickly in marine environment. Good tools, good care = long life. Good Technique Use the right tool for the purpose. Practice using the tool. Accuracy Depends On Accuracy Depends On

4 413 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Plotters Plotters Draw straight lines. Measure angles with respect to longitude. e.g. Measure directions Many types. Choose according to personal preference.

5 513 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Parallel Rules Plotting Tools Paraglide Course Plotter Course Protractor Three-Arm Protractor Vecta Rose Paraglide (Compact)

6 613 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. More Plotting Tools Chart Protractor Triple Parallel Rules Protractor Triangles

7 713 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Dividers Measure or mark off distances on a chart. Pointed both arms. Drafting compass. Used for swinging an arc. Dividers & Compass Dividers & Compass Compass Dividers

8 813 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Reliable time piece essential: Dead reckoning navigation. Running a search pattern. Identifying light patterns. 24 Hour display helpful. Stopwatch a useful function. Watch or Clock Watch or Clock

9 913 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Used to solve problems in time - speed – distance. If you know two variables, you can solve for the third. Alternate: solar or battery powered calculator. Nautical Slide Rule Nautical Slide Rule

10 1013 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Binoculars and Hand-held Compass Binoculars and Hand-held Compass Binoculars Locating ATONS, Landmarks Use 7 X 50 Hand-held Compass Visual bearings on ATONS or landmarks to establish LOP.

11 1113 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Depth Sounder & GPS Depth Sounder & GPS Depth sounder: Help prevent groundings. Aid in position-finding. GPS: Position finding. Advanced navigation-related computations.

12 1213 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Sextant Sextant Classic use for celestial navigation. Also useful for measuring horizontal and vertical angles e.g. Distance off from vertical angle.

13 1313 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Other Tools Other Tools Electronics: Radio Direction Finder Radar Loran C Optical Range Finder Lo-Tech Stuff Paper Pencils Erasers Pencil sharpener Magnifier

14 1413 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. References: Nautical Chart NO. 1 References: Nautical Chart NO. 1 Explanation of nautical chart: Symbols Abbreviations Terms

15 1513 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. References: Tide & Current Tables References: Tide & Current Tables Predictions of tidal events: Tides Tide differences Tidal currents Tidal current differences

16 1613 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. References: Notices to Mariners References: Notices to Mariners Updates and corrections: Charts. Hazards to navigation. Available on-line.

17 1713 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. References: Computer Programs References: Computer Programs Tide & tidal current predictions Charts Real-time chart plotting Voyage planning Vessel management

18 1813 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Other References Other References Coast Pilot Written descriptions and navigational advice regarding waterways. Light List Tabular compilation of ATON locations and descriptions. Cruising guides Commercially produced waterway descriptions and cruising advice.

19 1913 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. Your Most Important Tool PREPARATION PREPARATION

20 2013 DEC 04 Basic Coastal Navigation - Chapter 4 Copyright ©2004 Coast Guard Auxiliary Association, Inc. End of Chapter 4


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