🔍 Key Concepts

• Inland Navigation Rules and local speed regulations that apply on rivers and in narrow channels • How speed limits are often defined in relation to specific charted aids to navigation (like lights, buoys, or landmarks) • The importance of checking the USCG Local Notices to Mariners and 33 CFR for area‑specific speed restrictions

💭 Think About

• Look at where Tue Marshes Light is located on the chart and consider why there might be a special speed restriction for vessels going up river there • Think about what kinds of traffic and navigational conditions (ferries, narrow channel, bends, marinas, shoals) might cause the Coast Guard to impose a relatively low vs. high speed limit • Compare the options and ask yourself which speeds are more typical for no‑wake / restricted zones versus normal river transit speeds

✅ Before You Answer

• Verify in 33 CFR Part 162 or 33 CFR Subchapter C (Inland Waterways Navigation Regulations) for any specific speed limits near Tue Marshes Light • Confirm on a NOAA chart where Tue Marshes Light is and whether the note or inset mentions a speed restriction for vessels proceeding up river • Before picking an answer, decide whether the rule there is meant to be a slow, safety‑driven speed or a more transit‑efficient speed, then match that logic to the choices