INLAND ONLY Which light display would mark...

INLAND ONLY Which light display would mark the opening in a pipeline where vessels could pass through?

No comments yet

Be the first to share your thoughts!

🔍 Key Concepts

• INLAND ONLY – this comes from special U.S. inland requirements, not the International COLREGS • 33 CFR 88 – Lights on dredge and pipeline operations (look for the section on pipelines crossing navigable channels) • The difference in meaning between red vs white lights when marking hazards and safe passage areas

💭 Think About

• Ask yourself: when marking an obstruction like a dredge pipeline, which color is more often associated with a hazard / do not pass, and which with general or safe navigation? • Think about why the rule would require multiple lights in a vertical line on each side of the opening. What does the number of lights help you do at night from a distance? • Compare how the rest of the pipeline (the part you should NOT cross) is required to be lighted, versus how the opening for passage is marked. How would regulators make the opening clearly distinguishable from the obstruction lights?

✅ Before You Answer

• Look up the exact wording in 33 CFR 88.15 – Lights on dredge pipelines (or the current equivalent section) to see how an opening in a pipeline is described and marked • Verify both the color and the number of lights required on each side of the opening – they must match one of the choices exactly • Confirm that the chosen option would make sense from a mariner’s point of view at night: it should clearly tell you “this is where you can safely pass through” and look different from the rest of the pipeline lighting

🔍 Key Concepts

💭 Think About

✅ Before You Answer