The channel under a bridge is marked with...

Question 1 / 2707066636ee928f7522a1c5192ba

Question 1 of 2707066636ee928f7522a1c5192ba

The channel under a bridge is marked with aids from the lateral system. The centerline of the channel is marked on the bridge with __________.

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Question 1 of 27070

The channel under a bridge is marked with aids from the lateral system. The centerline of the channel is marked on the bridge with __________.

🔍 Key Concepts

• Lateral system of buoyage and how channels are marked near bridges • Special markings used to show the centerline of a navigable span on fixed bridges • Differences between shapes/colors used for regulatory vs navigation/channel marks

💭 Think About

• Think about which choices look like regulatory or warning signs versus those that would help a mariner stay in the center of a span at night • Ask yourself: on a bridge, what kind of simple light or shape would be easiest to line up with from a distance to stay on the channel centerline? • Consider how aids to navigation differ between dayboards/signs and lights, and which is more common for marking the exact center of a span.

✅ Before You Answer

• Identify which options resemble regulatory/information signs (used for rules, exclusion zones, etc.) rather than channel marking • Recall that centerline marks on bridges must be highly visible and usable at night for alignment • Eliminate any shape/color combinations that are typically associated with danger, exclusion, or special information rather than basic channel guidance.

Question 1 of 27070

The channel under a bridge is marked with aids from the lateral system. The centerline of the channel is marked on the bridge with __________.

a black-and-white diamond

three white lights

a yellow triangle

a red-and-white octagon

Question 1 / 2707066636ee928f7522a1c5192ba

Question 1 of 2707066636ee928f7522a1c5192ba

The channel under a bridge is marked with aids from the lateral system. The centerline of the channel is marked on the bridge with __________.

Back

Question 1 of 27070

The channel under a bridge is marked with aids from the lateral system. The centerline of the channel is marked on the bridge with __________.