ASA 105 - COASTAL NAVIGATION

UNDER CONSTRUCTION

BOOKS & SAILING EDUCATION RESOURCES

   

COASTAL NAVIGATION (ASA 105)

OTHER ASA STUDY GUIDES

 

ADVANCED SAILING - SKIPPERING (ASA 103 - Basic Coastal Cruising)

 

INTERMEDIATE CRUISING (ASA 104 - Bareboat Charter)

 

 COASTAL NAVIGATION

How to use parallel rulers -  http://www.boatsafe.com/navigation/rules1.htm

Assistance to the Navigation course online:  http://www.boatsafe.com/navigation/intronav.htm

 

NAVIGATION

CHARTS - NAVIGATIONAL AIDS

Charts -  Use a chart for navigating any waters that you are boating

On a Chart -  Water depth (feet/fathoms), bottom characteristics, aids to navigation (ATONS), navigational hazards, notes should be read to determine special characteristics of sailing area, danger areas, safe water areas.

Buoys -  ATONS (lighted or unlighted) which are not in a fixed position, but instead are moored/anchored.  Cannot count on exact position.

 Shown on chart as:    Lighted buoy  - Actual view
Chart mark for lighted buoy, which appears as a magenta circle with a magenta diamond affixed to the upper right side.  The first caption reads R "8" and the second caption reads FI R 4s.

Illustration of a lighted buoy, which has a red platform, with a rectangular red structure with a square in the upper left side and a white numeral 8 on the upper right. A red light is affixed to the top.

 

Red ATONS have EVEN numbers    -   Green ATONS have ODD numbers

 

Safe Water/ Mid-Channel Marks have LETTERS

Shown on chart as:  Lighted buoy - Actual view

Chart mark for lighted and/or sound buoy, which appears as a magenta circle with a clear diamond affixed to the upper right side.  A line bisects the diamond vertically and a small clear circle is affixed to the top of the diamond.  The first caption reads RW "N" and the second caption reads Mo (A).

RW N"
Mo(A)

Illustration of lighted and/or sound buoy, which has a platform that is white on the left and red on the right.  The cylindrical structure is white on the left and red on the white, with a white square on the upper left and a white letter N on the upper right.  A white light and a red circle are affixed to the top.

 

Fixed ATONS -  Can be certain of position....as they are fixed in position.  (lighted)  Seen on chart as seen to the right....

 Shown on chart as:    Lighted daymark  - Actual view

Chart mark for the light, which appears as a black circle with a magenta teardrop shape above it to the upper right side. First caption read "1" and second caption reads FI G 6 s.

Illustration of a green light, which is a green square with dark green border and a green numeral 1 in the center.  The light is atop the square.

Lateral ATONS - Tell you which side of a channel to navigate

IMPORTANT RULE:  When returning from SEAWARD, keep the RED to the RIGHT when RETURNING from sea

 
More to come

 

   

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