TheoryFree USCG OUPV / Master Captain Licence Practice Test
Take a free USCG OUPV / Master Captain Licence practice test for 2026 with questions, answers, explanations, PDF download and timed mock exam links.
USCG OUPV / Master Captain Licence Questions
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Q1What is the arc of visibility for sidelights?
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✓ Correct answer: 135 degrees
Sidelights (red to port, green to starboard) each cover 112.5 degrees from dead ahead.
Q2A power-driven vessel underway less than 50 meters in length must exhibit how many masthead lights?
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✓ Correct answer: Two masthead lights
A power-driven vessel under 50m may show one masthead light (Rule 23(a)).
Q3A sailing vessel underway must show which lights?
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✓ Correct answer: Sidelights and stern light
A sailing vessel shows sidelights and a stern light (Rule 25). No masthead light when under sail only.
Q4A vessel not under command shows which lights?
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✓ Correct answer: One red and one white light in a vertical line
A vessel not under command shows two all-round red lights in a vertical line (Rule 27(a)).
Q5What lights does a vessel constrained by her draft display?
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✓ Correct answer: Two all-round red lights in a vertical line
A vessel constrained by draft shows three all-round red lights in a vertical line (Rule 28).
Q6What color is the stern light?
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✓ Correct answer: Yellow
The stern light is a white light visible over 135 degrees centered on the stern (Rule 21(c)).
Q7A vessel engaged in towing with the tow exceeding 200 meters shows which lights?
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✓ Correct answer: Two masthead lights in a vertical line forward
When the tow exceeds 200m, the towing vessel shows three masthead lights forward in a vertical line (Rule 24(a)).
Q8What color are the lights for a vessel restricted in her ability to maneuver when not making way?
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✓ Correct answer: Three white lights in a vertical line
A vessel restricted in ability to maneuver shows an all-round red, white, and red (top to bottom) in vertical line (Rule 27(b)).
Q9What is the minimum visibility range for the masthead light on a vessel 50 meters or more in length?
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✓ Correct answer: 5 miles
Masthead lights on vessels 50m or more must be visible at 6 miles (Annex I).
Q10A vessel engaged in fishing (other than trawling) underway shows which lights?
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✓ Correct answer: Two all-round red lights in a vertical line
A fishing vessel (non-trawling) shows all-round green over white, plus sidelights and stern when making way (Rule 26(b)).
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