BOTH INTERNATIONAL & INLAND A vessel is...

Question 1 / 2707066636eeb28f7522a1c51bdfa

Question 1 of 2707066636eeb28f7522a1c51bdfa

BOTH INTERNATIONAL & INLAND A vessel is towing and carrying the required lights on the masthead. What is the visibility arc of these lights?

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Question 1 of 27070

BOTH INTERNATIONAL & INLAND A vessel is towing and carrying the required lights on the masthead. What is the visibility arc of these lights?

🔍 Key Concepts

• Towing vessel lights under the Navigation Rules (Rule 24) • The normal masthead light arc of visibility for power-driven vessels • How towing lights compare to a vessel’s standard masthead and sidelights

💭 Think About

• Think about what type of light is carried on the masthead of a towing vessel. Is it a full-circle (all-round) light, a sidelight, or a standard masthead (steaming) light? • Compare the visibility arc of a masthead (steaming) light to that of sidelights and stern lights. Which one most closely matches what a towing vessel shows forward? • Ask yourself: does the towing arrangement change the arc of each light, or just the number and arrangement of masthead lights?

✅ Before You Answer

• Confirm from the Navigation Rules what the standard masthead light arc is for a power-driven vessel underway • Verify the different arcs for sidelights, stern light, and all-round light so you can eliminate incorrect angles • Make sure you understand that towing lights on the masthead still follow the masthead light arc requirement, not the sidelight or stern light arcs

Question 1 of 27070

BOTH INTERNATIONAL & INLAND A vessel is towing and carrying the required lights on the masthead. What is the visibility arc of these lights?

112.5°

135.0°

225.0°

360.0°