Which type of daymark would you see on the...

🔍 Key Concepts

• U.S. Aids to Navigation System on the Western Rivers (remember: Belle Island Corner Light is an inland river aid) • The meaning of red vs. green aids when going upriver (Against Head of Passes / AHP) • The standard shapes of dayboards/daymarks that go with red and green lateral marks in Region B/Western Rivers

💭 Think About

• First, decide: at mile 458.6 AHP on the river, are you conceptually going upbound or downbound when reading the chart, and which side are the red aids on? • Recall the pairings: what shape is normally used for green lateral aids, and what shape is normally used for red lateral aids on U.S. inland waters? • Ask yourself: is a diamond normally used for lateral (port/starboard) marks, or for something else like ranges or special marks?

✅ Before You Answer

• Verify on a sample river chart or chart legend what symbol/shape is used for green lateral aids vs. red lateral aids. • Confirm what AHP (Above Head of Passes) implies about river mileage and direction of buoy numbering and colors. • Double‑check in the U.S. Aids to Navigation System that the standard lateral daymark shapes are consistent whether on buoys or fixed daybeacons.

Which type of daymark would you see on the Belle Island Corner Lt. at mile 458.6 (AHP?

Red diamond

Green square

Green diamond

Red triangle