SOA Navigation
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Transcript of SOA Navigation
Aids To Navigation‣ Aids to navigation provide:
Important information about
• where the safest water is
• dangers
• information
• speed zones• position in relation to land
Visual Distress Signals‣ Aids are often used together
to help you follow natural and improved channels
‣ Provide a continuous system of charted markers for coastal cruising
Individual Aids
‣ Used to mark landfall from seaward
‣ Used to mark isolated dangers
Lateral Markers
‣ Floating buoys or cans
‣ Day markers
‣ Show the port and starboard sides of a safe route to be followed
Red Right Returning‣ Red day markers and lighted beacons
mark the proper way to ‘return for sea’
‣ The 3 R’s rule of Red Right Returning
‣ When returning from sea keep the red makers on right or starboard side
‣ Inland waterways keep the Red marker on right side when heading upstream or into a port or marina
Don’t Use As Only Method of Navigation
‣ Storms and wave action can move buoys out of place
Use in Combination With Chart
‣ Have a chart aboard
‣ Compare the position of markers in relation to land and each other
‣ Will help you to determine what is upstream and downstream
Lateral Aids
‣ Show where the safest water is
Non Lighted Green Day Beacon
‣ Marking a Safe Channel
‣ On your left or port side when going up stream
5G“7”
Lighted Green Day Beacon
‣ This marks a safe channel 5
”5”Fl G 6s
Green Can
‣ A can floats in the water
‣ Could be used to mark a safe channel
‣ Used by itself to mark an isolated danger
3
GC “3”
Lighted Green Buoy
‣ Flashes green at night
‣ Marks isolated dangers
‣ Marks a landfall from sea
1
G ”1”Fl G 4s
Odd Numbers & Flat On Top
‣ All have odd number marking
‣ All flat on top and look like a soda ‘can’
‣ Helps identify from a distance or in direct sun
Red Day Beacon
‣ Remember “Red Right Returning”
‣ Have even numbers and are pointed on the top
8R“8”
Red Lighted Day Beacon
‣ Lighted red beacon
6”6”
Fl R 6s
Floating Nun (red can)
‣ Red version of floating can 4
RN “4”
Red Lighted Buoy
‣ Is not pointed on the top but exhibits a red light
2
R ”2”Fl R 4s
Regulatory Markers
‣ Often single markers alerting boaters to hazards
‣ White with an orange horizontal band at both top and bottom
‣ Black text within or around an orange square, circle, or diamond
‣ If lit, the light will be white
Danger Marker
‣ Diamond Shape
‣ Hazard marked inside and is marked on the chart
Restricted Operation
‣ Circle
‣ Indicate areas of regulated operations
• No Wake Zones
• Speed Restricted Areas
Exclusion Marker (no boats permitted)
‣ Diamond with a cross
‣ Exclusions are noted
• Prohibiting Boat Operation
• Identifying Swimming Areas
Information Marker
‣ Square
‣ Designed to provide helpful information
• Launch Ramp Location
• Provisions
• Gas Dock
Dive Flag / Alpha Flag
‣ Slow down
‣ Stay at least 100 feet away
‣ Diving operations, slow down and stay at least 300 feet away in open waters or bays
Aids to Navigation‣ Use the aids to navigation in
conjunction with marine charts
‣ Together will provide a complete picture of where it is safe to operate your boat