NAVIGATION TRAINING Section 7 Buoyage

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

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.

Buoy in Fog What action do you take seeing this?

Buoyage

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

Buoyage

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

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

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

Buoyage

Port Channel Buoy Starboard Channel Buoy

Buoyage

Bifurcation Channel Buoys

Buoyage

What’s This?

Buoyage

Channel Markers

Buoyage

Special Marker Buoys

Buoyage