In the U.S. Aids to Navigation System on the...

Question 1 / 2707066636ee928f7522a1c51a4a5

Question 1 of 2707066636ee928f7522a1c51a4a5

In the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will __________.

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Question 1 of 27070

In the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will __________.

🔍 Key Concepts

• Western Rivers Aids to Navigation differences from standard IALA-B sea buoyage • Meaning and appearance of a preferred channel buoy (junction buoy) when the preferred channel is to starboard • How light characteristics and color bands indicate the preferred channel in U.S. systems

💭 Think About

• Think about what a preferred channel buoy looks like when it marks that the main or preferred route is to starboard, and you are leaving it to port while going downstream. • Consider how the color pattern (which color is on top) relates to which side is preferred, and whether this changes between standard U.S. IALA-B and Western Rivers. • Ask yourself: when such a buoy is lighted, what light color and flash pattern is associated with a preferred channel where the top band is red?

✅ Before You Answer

• Verify how a Western Rivers preferred channel buoy is shown on the chart and in the Light List (top band color, shape, and meaning). • Confirm which type of buoy uses a composite group flashing light characteristic in U.S. Aids to Navigation. • Double‑check whether a preferred channel buoy with a red upper band, when lighted, shows a red light or some other color.

Question 1 of 27070

In the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will __________.

have the upper band red

have a characteristic of composite group flashing if lighted

show a red light if lighted

All of the above

Question 1 / 2707066636ee928f7522a1c51a4a5

Question 1 of 2707066636ee928f7522a1c51a4a5

In the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will __________.

Back

Question 1 of 27070

In the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will __________.