Under the IALA-B Buoyage System, when...

Question 1 of 2707066636ee928f7522a1c5198d8

Under the IALA-B Buoyage System, when entering from seaward a lateral system buoy to be left to starboard may display which of the topmarks shown in illustration D046NG below?

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Question 1 of 27070

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Under the IALA-B Buoyage System, when entering from seaward a lateral system buoy to be left to starboard may display which of the topmarks shown in illustration D046NG below?

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🔍 Key Concepts

• IALA-B lateral system – color and shape of starboard-hand vs port-hand buoys when entering from seaward • The U.S. memory aid “red, right, returning” and what it says about which side the red buoys go on • Difference between a conical (nun) and cylindrical (can) buoy shape / topmark

💭 Think About

• When you are entering from seaward (coming in from the ocean toward port), which color buoys do you keep on your starboard (right) side in the IALA-B system? • Once you know the correct color for a starboard-hand buoy, which shape/topmark is associated with that side: cone or can? • Look at each option in the illustration: which ones match the correct color AND shape combination for a buoy you should leave to starboard?

✅ Before You Answer

• Be sure you are thinking of IALA-B, not IALA-A • Confirm which side is starboard when you are the vessel entering from seaward (facing forward). • Verify that your choice has both the correct color and the correct shape/topmark for a starboard-hand buoy.