Navigation NAU 102 Lesson 8
Navigation NAU 102 Lesson 8. Pilot Charts Enable you to select the fastest, safest routes. Small scale charts covering ocean basins. Used for voyage planning,
Jan 14, 2016
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Navigation
NAU 102
Lesson 8
Pilot Charts
Enable you to select the fastest, safest routes.
Small scale charts covering ocean basins.
Used for voyage planning, not positioning.
Pilot Charts
Graphically depict:
Recommended routes
Ice limits
Prevailing winds
Ocean currents
Average wave heights
Pilot Charts
Each atlas consists of 12 charts, 1 for each month of the year.
5 Atlases cover the world.
Published quarterly by NGA.
Pilot Charts
Pilot Charts
Tide Tables
4 volumes by location
Data on high & low tide.
Published annually by NOS
Tide Tables
East Coast of North & South America
Published in 4 volumes
Europe & West Coast of Africa
West Coast of North & South America
Central & Western Pacific & Indian Ocean
Tide Tables
Tables enable calculations of height of tide at any time.
Daily predictions of HW & LW at reference stations (major ports).
Corrections can be applied for subordinate stations.
Tide Tables
Tide Tables
Tidal Current Tables
2 volumes by location
Data on tidal currents
Published annually by NOS
Tidal Current Tables
Tables enable calculations of speed of tidal current at any time.
Daily predictions of maximum currents at reference stations (major ports).
Corrections can be applied for subordinate stations.
Tidal Current Tables
Tidal Current Tables
Radio Navigational Aids
Location & frequencies of aids
useful for radio navigation
•RDF stations
•Radiobeacons
Published by NGA
•Loran stations
Radio Navigational Aids
•Radio weather reports
•Maritime safety information broadcasts
•Distress communication, etc.
Radio Navigational Aids
Radio Navigational Aids
Radio Navigational Aids
Radar Navigation Manual
Radar Navigation Manual
Chapter 4 – Radar Navigation.
Use and limitations of radar in navigation.
Radar Navigation Manual
Recognition of radar beacons
(racons) & ramarks.
Radar Navigation Manual
Finding (“fixing”) your position using
radar.
Nautical Almanac
Published by U.S. Naval Observatory
Enables you to calculate:
Position of celestial bodies.
Sunrise, sunset.
Moonrise, moonset.
Nautical Publications
Like charts, publications must be
up to date.
Corrections are promulgated through Notices to Mariners
Always use the current edition.
Weekly Notice to Mariners
Lists changes to publications.
Often involve cutting & pasting.
Weekly Notice to Mariners
Completed corrections are recorded on the publication’s Record of Correction page.
Local NTM
Issued by Coast Guard
Contains information of local interest only.
Often of temporary nature.
Local NTM
Introduction to Navigation
Questions?
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