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ASA 105
Coastal Navigation


See the boats: Caribbean Sailing School Private Instruction

Prerequisites: 101 - 103 - 104

This standard requires purchasing a large manual at a cost of $60-$70 from ASA. We highly reccomend you go through the entire manual before you arrive to sail.

Includes a written test (takes most students about 2 hours)

  • Explain chart symbols and conventions on U.S. nautical charts in accordance with international terminology
  • Identify a source of official U.S. Coast Guard navigation publications
  • List the publications and instruments required for prudent navigation in the local area including ASA minimum requirements
  • Use the tide and current tables to find times/heights of tides and direction/rate of current at reference and secondary ports
  • Convert courses and bearings between true, magnetic and compass
  • Check compass deviation by means such as a transit bearing
  • Plot a dead reckoning position on a chart using speed, time and course to steer
  • Allow for the effect of current and leeway to plot the estimated position
  • Determine a course to steer which takes into account known current and leeway
  • Determine current given the course steered and speed and two observed positions.
  • Plot a chart position from terrestrial objects using various types of bearings, transit range and distance off the object
  • Use the above techniques to chart a course of at least 20 miles and 3 course changes.
  • Explain the terms and characteristics used for lighted navigation aids
  • Explain the significance of shapes, colors, and lights used in the buoy system

See the boats: Caribbean Sailing School Private Instruction

ASA is $20 per person, per level
• For example, ASA 101-103-104 is $60 per person
• You buy books, used is fine: amazon, powells

Add $39/person for anyone not already an ASA member.



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