navigation training section 7 buoyage. table of contents section 1types of navigation section 2...
TRANSCRIPT
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NAVIGATION TRAINING Section 7 Buoyage
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Table of Contents • Section 1 Types of Navigation • Section 2 Terrestial Coordinates • Section 3 Charts • Section 4 Compass • Section 5 Nautical Publications • Section 6 Navigational Aids• Section 7 Buoyage • Section 8 Position Lines and Fixes • Section 9 Tides • Section 10 Currents • Section 11 Weather
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BuoyageCaution
• Navigation buoys are not accurate navigation points, as they are pushed in the direction of the tidal flow
• The lower the height (rise) of tide the more the buoy itself can move away from the charted position.
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Buoy in Fog What action do you take seeing this?
Buoyage
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Cardinal System of Buoyage Uniform Cardinal System of Buoyage
•Method: •Indicate the approximate true bearing of safe water from the danger it marks.
•Uses: •Mark offshore rocks, shoals, and islets. •Mark dangers in and near the open sea.
Buoyage
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Buoyage
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Lateral Systems In Canada we use Lateral System “IALA B”⇒ •Red buoys mark the starboard (right) side of channels (Red Right Return) When returning from seaward
•Green buoys mark the port (left) side of channels
Buoyage
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Lateral Systems Direction Of Buoyage - is that taken when approaching a harbour from seaward or along coasts, the direction determined by buoyage authorities, normally clockwise around land masses.
Chart symbol showing direction of buoyage where not obvious
Buoyage
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Characteristics Port Hand Starboard Hand Safe Water Preferred Channel
Colour Green Red Red/White vertical stripes
Green/Red horizontal bands
Shape Can or combination
Nun or Combination
Sphere or combination
Can, Nun or combination
Markings Odd numbers Even numbers May be lettered May be lettered
Light characteristics
Any [except Gp. FL (2+1)]
Any [except Gp. FL (2+1)]
Mo. (A), Iso, Occ, L.ft. 10s
Gp. Fl. (2+1)
Light colour Green Red White Red or Green
Buoyage
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Buoyage
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Port Channel Buoy Starboard Channel Buoy
Buoyage
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Bifurcation Channel Buoys
Buoyage
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What’s This?
Buoyage
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Channel Markers
Buoyage
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Special Marker Buoys
Buoyage