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Objectives, Continued
Objectives
List the three elements used to identify a light at night.
State the differences between primary and secondary lights.
List two purposes of ranges.
Identify the differences between directional lights, daybeacons,
and minor lights.
Describe how light sector bearings are plotted on charts.
State the reason why sound signals are used on ATONs.
State the purpose of a RACON.
Identify the function of a buoyage system.
List the characteristics of lateral and cardinal buoyage systems.
Identify the differences between IALA region A and IALA
region B.
State which IALA region applies to the United States.
Identify and explain variations in the following U.S. Systems of
ATONs:
a. Intracoastal waterway (ICW)
b. Western rivers
c. Uniform State Waterway Marking System (USWMS)
Identify and distinguish between international and inland rules of
the road.
Topic
Page
Navigational Lights
4 - 3
How to use the Light List
4-5
Characteristics of Lighted Aids to Navigation
4-6
Visibility of Lights
4-8
Types of Lights and Structures
4-14
Sector Lights
4-21
Buoys
4-24
Buoyage Systems
4-28
The United States System of Aids to Navigation
4-30
Rules of the Road
4-39
Maneuvering and Warning Signals
4-44
4-2
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