Under the U.S. Aids to Navigation System,...

Question 1 / 2707066636ee928f7522a1c51a46c

Question 1 of 2707066636ee928f7522a1c51a46c

Under the U.S. Aids to Navigation System, which category is a yellow buoy?

Question 1 of 27070

Under the U.S. Aids to Navigation System, which category is a yellow buoy?

🔍 Key Concepts

• U.S. Aids to Navigation System (USATONS) color meanings • Difference between lateral marks (red/green) and non‑lateral marks (like safe water, special purpose) • How special marks and safe water marks are shown on chart symbols and light lists

💭 Think About

• First, ask yourself: which type of buoy is used to mark areas or features such as anchorages, dredging areas, or spoil grounds, rather than channel limits? • Which of these options (cardinal, junction, special, safe water) belongs primarily to the International IALA-A/B cardinal/lateral system, and which are specific-purpose marks? • Think about the usual colors and topmarks for safe water and cardinal marks, and compare them to a plain yellow buoy.

✅ Before You Answer

• Verify in a chart symbol legend or Light List what color is normally associated with safe water buoys (what pattern and color?). • Check what cardinal marks look like under the IALA system (color scheme and topmarks) and whether yellow alone fits that description. • Confirm which type of buoy is described as yellow, often with an "X" topmark, and used to mark special areas or features rather than the main channel.

Question 1 of 27070

Under the U.S. Aids to Navigation System, which category is a yellow buoy?

A cardinal mark

A junction buoy

A special mark

A safe water buoy