copyright 2005 - coast guard auxiliary association, inc. 1 chapter 3 navigating the waterways

Copyright 2005 - Coast Guard Auxiliary Association, Inc. 1

Chapter 3

Navigating The Waterways


AIDS TO NAVIGATION

ATONS


C.G. Maintains ATONS


ATONS

Right side of channel from seaNUN buoys,

Red colors

Even numbers

Red, Right, Returning


AIDS TO NAVIGATION

Experimental Slide

Elements of A Chart(click above to open interactive chart)

http://earthnc.com/chartviewer/index.php?ll=30.410659062829467,-81.46171645758045&z=13


Lighted Buoys

Right side of channelRed color, Red light, Even numbers (82)

Left side of channelGreen color, Green light, Odd numbers (81)


ATONSDAYMARKS-USED IN SHALLOW WATER RATHER THAN BUOYS


ATONS

BEACONS ARE DAYMARKS WITH LIGHTS


ATONS


NAVIGATION AIDS

JUNCTION BUOY

USES LETTERS INPLACE OF NUMBERS


PREFERRED CHANNEL ATONS


The top band in green, indicates the preferred channel.The bottom band in red indicates the subordinate channel.

The top band in green, indicates the preferred channel.The bottom band in red indicates the subordinate channel.


Entrance to Naval Station Mayport Harbor(the subordinate channel)

Entrance to Naval Station Mayport Harbor(the subordinate channel)


ATONS• Junction Daymark in Shallow Water

Assume this boat is Approaching From the Preferred Channel

Assume this boat is Approaching From the Preferred Channel


Waterway Marks


PREFERRED CHANNEL ATONS


ATONS

Isolated Danger AreaMay be passed on all sides.

Approach with Caution.

Isolated Danger AreaMay be passed on all sides.

Approach with Caution.


• Non-Lateral Marks - US Aids

Non-Lateral Aids

Daymark

Spherical Buoy(unlighted)

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ST. JOHNS RIVERSAFE WATER BUOY


OBSTRUCTING NAVIGATION

• It is illegal to:• Anchor in a channel• Tie up to a buoy or ATON• Tamper with, deface, or move any

ATON• Obstruct a pier, wharf, boat ramp


Intracoastal Waterway• From New Jersey to Texas.

• Red on Right from NJ to Texas


Intracoastal Waterway

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• ICW waterway uses yellow symbols to distinguish them from aids marking other waters.

• Yellow triangles to starboard side when going south.

• Yellow squares to port when going south. • A yellow horizontal band has no significance, only identifies aids as marking the ICW.

ICWICW


ICW DAY MARKERS/BEACONS


ICW DAY MARKERS/BEACONS

SHARED WATERWAY


Western Rivers

• Used on Mississippi and tributaries

• Not numbered

• Numbers below daybeacons• Indicate distance from mouth of river

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Non-Lateral Aids

Include Private MarkersOf Various Shapes And SizesInclude Private MarkersOf Various Shapes And Sizes

Mooring Buoys Which Are For Legally Securing Your Boat Away From A Dock Instead of Dropping An Anchor

Mooring Buoys Which Are For Legally Securing Your Boat Away From A Dock Instead of Dropping An Anchor

AndAnd


Regulatory Markers

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Provide Information and InstructionsProvide Information and Instructions


REGULATORY MARKERS

This Marker defines slow speed boundaries at the channel’s edgeThis Marker defines slow speed boundaries at the channel’s edge


Downtown Temporary Speed Zone When Flashing


• Charts• Why important?• What information is

contained?

Navigating on Water

1

The Elements of a Chart


NAVIGATION TOOLS

• CHARTS OF AREA

• CHART #1

• CHART CATALOG

• PLOTTING INSTRUMENTS• #2 PENCIL• DIVIDERS• PLOTTER


Most Valuable Tool


Steering Compass

• Magnetic North

What is the

lubber line?

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41© 2003, RJ Sweet, “GPS for Mariners,” Reprinted with permission© 2003, RJ Sweet, “GPS for Mariners,” Reprinted with permission

We Steer to Magnetic We Steer to Magnetic NorthNorth

GPS can be set to display magnetic direction


Magnetic CourseMagnetic Course

Compass Rose is a convenient Reference


Piloting

Pre-Planning Routes by Compass Heading, Estimated Speed and Arrival TimePre-Planning Routes by Compass Heading, Estimated Speed and Arrival Time


Provides Position as:

• Latitude and Longitude

• Direction, if moving

• Speed over bottom, if moving

• Chart Plotter GPS

• Position on chart

GLOBAL POSITIONING SYSTEMS (GPS)


Language of NavigationLanguage of Navigation

GPS provides a 3-D position in space translated to coordinates on the earth


Locate Position on ChartLocate Position on Chart

GPS “Position”Corresponds to A Position On The ChartRead in “Degrees”“Minutes” and “Seconds”

Information on real-world

objects provided by

charts.

Dangers Of Lowhead Dams

• Low Head Dams Are a danger

to boaters…….

….From both above and below.From above they are hard to see.Below, turbulent waters

….From both above and below.From above they are hard to see.Below, turbulent waters


Dangers Of Lowhead Dams


Locks

• Commercial traffic has priority

• Communication: channel 13 VHF-FM marine

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stand clear

approach

enter

Traffic Signals At Locks


Transiting Locks


Bridges

• What needs to be considered?1

Check your chart for bridge clearancesCheck your chart for bridge clearances


Bridges• Typical information found on bridge

fenders1


Check Clearance


Tides On Coastal Waters

• Gravitational forces of the moon and sun

• Tides fluctuate by many feet

• Docking affected by tide

• Local knowledge

• Don’t run aground

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Chapter 3 Review

Copyright 2005 - Coast Guard Auxiliary Association, Inc.

57

Review Exercises

• An Aid To Navigation is any object external to the boat that 1. Helps a boater pilot a boat safely, 2. aids a boater in finding a position, and 3.___

• Warns a boater of danger• Marks the best fishing holes• Marks an area with water depths of at least 50 feet• Provides a place to tie to

1

a

b

c

d

Review ExerciseDiscuss Each Marker In The Picture


Review Exercises

• You are returning from sea and want to stay safely in the preferred channel. On what side of your boat would you keep a red and green horizontally-banded marker if the top band is red?

• Either side would be appropriate.• Port• You would stop and turn around (you are in an

exclusion area).• starboard

4

a

b

c

d


Review Exercises

• Regulatory markers with orange circles and black lettering indicate:

• controlled areas.• dangerous areas.• exclusion areas where boats should keep out.• general information for the area.

9

a

b

c

d


End Chapter 3

copyright 2005 - coast guard auxiliary association, inc. 1 chapter 3 navigating the waterways

Documents

texas slide

navigation atons slide

preferred channel slide

subordinate channel

preferred channel atons

waterway marks slide

boat ramp slide

open interactive chart