Welcome to Seasources.net. Established in 1996, we are the ultimate source for online USCG exam preparation assistance. Seasources.net provides free online exam preparation along with downloadable studyguides and standalone software that allows you to continue your studies without an internet connection.

SeaSources.net, Training for Mariners. The First with Online Study for the Maritime Industry. Multiple Choice Quizzes with Illustrations for United States Coast Guard Exam Preparation Assistance. 

Click here to create an account in the online study and begin your license preparation.

The subjects listed below are currently available for testing in the new online study room and are available for download to your computer. Click on subject below for details.

Engineering Examination Questions

All Engine Room Questions

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Master 25/50/100 Ton

Operator Uninspected Passenger Vessel

All Deck Exam Modules

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Aids to Navigation  Glossary Included

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Fire Fighting Glossary Included 

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Great Lakes

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Inland Navigation  

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Marine Radio Operator 

Meteorology  "Glossary Included" 

Mobile Offshore Drilling Unit

Previews of Deck and Engine Room Questions

Celestial Navigation

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Pollution Control and Prevention

Rules and Regulations

Plotting/Navigational Problems

QMED

Survival Craft

Seamanship   Glossary Included

Sailing Vessels  

Ship Handling 

Ships Construction Glossary Included  

Ships Business

Signaling  

Stability and Trim Glossary Included 

Tankerman

Tides and Currents Glossary Included 

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Common Knots

Radar Plotting

 

 

Celestial Navigation.

We now have a whole new website.

coast-guard-exam.net

Click here to redirect. 

SeaSources Celestial Navigation Training Videos

  This course is designed to help you prepare yourself to pass the U. S. Coast Guard examination on Celestial Navigation for the upon oceans endorsement. The lessons presented are meant to be taken in order by lesson number to work your way through the course. All of the videos are now available here to view for free. They can still be downloaded and installed for viewing offline through the TesTTaker software.

Click here to Preview Navigation Problems, Celestial Observations Questions

 Introduction Video

Lesson 1: Corrections To Sextant Reading

Lesson 2: Dip Correction

Lesson 3: Apparent Altitude 

Lesson 4: Time, Watch Time

Lesson 5: Time, Chronometer Time

Lesson 6: Finding GHA and Declination

Lesson 7: Increments and Corrections Sun.

Lesson 8: Increments and Corrections Star.

Lesson 9: Assumed Position and Local Hour Angle

Lesson 10: Finding Computed Altitude and Azimuth

Lesson 11: Interpolation

Lesson 12: Altitude Intercept

Lesson 13: Position Plotting Sheets

Lesson 14: Plotting Lines of Position

Lesson 15: Combining all the lessons so far into a complete sight reduction problem. I still have a few details to tweak on this one but you can get the general idea.

Lesson 16: Finding Deviation or Gyro Error

Lesson 17: Finding Azimuth by 229 For Compass Correction

Lesson 18: Amplitudes

Lesson 19: Predicting Zone Time of Local apparent Noon

Lesson 20: Latitude by Meridian Altitude

Lesson 21: Latitude and Azimuth by Polaris

Lesson 22: Running Fixes

Lesson 23: Predicting Time of Sunrise / Sunset

Lesson 24: Star Identification.

 

Download Tables for Lesson  3, Altitude Correction

Download Tables for Lesson  7, Increments and Corrections Sun:

Download Tables for Lesson  8, Increments and Corrections Star

Download Tables for Lesson 10, Finding Computed Altitude and Azimuth

Download Tables for Lesson 11, Interpolation

Download Table 27 for Lesson 18, Amplitudes

Download Table 28 for Lesson 18, Amplitudes

Download Universal Plotting Sheet for Lesson 14, Plotting Lines of Position

Download Complete Increments and Corrections Tables:

Download Complete Nautical Almanac

Download Complete HO 229, Sight Reduction Tables.

Download Pole Star Tables

If you have found this information useful to your endeavors then please consider a donation to help keep this site running.

Listed below is a table of contents of the questions on this subject as they appear in the new online study. Click on the "Enter Online Study" link above to begin preparing for your exam.

From the pull down menu in the online study select from the following topics:

Deck Examination Questions as of March 24, 2014 Regulations

Celestial Navigation

  • Navigation Problems
    • AMPLITUDE
      • SUN
    • AMPLITUDE/ANY OTHER BODY
      • JUPITER
      • MOON
      • SATURN
      • VENUS
    • AZIMUTH
      • ANY OTHER BODY
      • POLARIS
      • SUN
    • FIX OR RUNNING FIX
      • STAR
      • SUN
    • LATITUDE BY MERIDIAN TRANSIT
      • EX-MERIDIAN
      • LOWER TRANSIT - OTHER
      • SUN
    • LATITUDE BY POLARIS
    • MISC. PROBLEMS
      • HO
      • LHA, ZN, A
    • STAR IDENTIFICATION
      • MAJOR
      • MINOR
    • STAR SELECTION
    • TIME OF MERIDIAN TRANSIT
    • SECOND ESTIMATE
    • ZONE TIME CALCULATIONS
      • SUN RISE/SET
  • Navigational Astronomy
    • CHARACTERISTICS OF CELESTIAL BODIES
      • MOON
      • MOTIONS OF CELESTIAL BODIES
      • PLANETS
      • STARS
      • SUN
    • COORDINATE SYSTEMS
      • CELESTIAL EQUATOR SYSTEM
      • EARTH SYSTEM
      • ECLIPTIC SYSTEM
      • HORIZON SYSTEM
    • NAVIGATIONAL TRIANGLE
      • ALTITUDES-HORIZONS
      • MISCELLANEOUS
      • SIDES/ANGLES
    • TIME
      • APPARENT TIME, EQ. TIME
      • SIDEREAL TIME, LUNAR TIME, ETC.
      • SOLAR TIME, GMT, LMT, ZT
  • Navigational Procedures
    • CELESTIAL NAVIGATION PROCEDURES

 

  If you are studying for a United States Coast Guard Deck License exam which includes this module, you should  work through these questions until you are scoring 90% or better on them.

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Copyright 2000 by SeaSources.net. All rights reserved.
Revised: 26 Oct 2023 13:41:16 -0400 

Contact Phone: 207-629-7004

Email: Captain Steve 

 

  For details on license requirements, application forms,  licensing fees, and testing locations, visit the United States Coast Guard / National Maritime Centers web site and look under Mariner's information center. The questions used in the online study  are updated annually from the NMC sample exams. All illustrations are current.

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See also:

SeaSources online Celestial Navigation Course 

MARYLAND NAUTICAL  Great source for practice charts and study guides

NAVIGATION COURSE

National Oceanic & Atmospheric Administration (NOAA)

The Navigation Center

Chart No. 1 Nautical Chart Symbols Abbreviations and Terms

Bluewater Books and Charts 

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