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Question 1
What term describes a straight course between two points?
Correct Answer:
Rhumb line
Explanation:
A rhumb line is the path that keeps a constant bearing from start to finish. On navigation charts, this appears as a straight line, which is why it’s described as a straight course between two points. The key idea is that you’d maintain the same compass direction along the entire route, even though it isn’t the shortest path on the globe (that would be a great-circle route). The other terms refer to things not about navigation courses: reef is a rock or coral formation, reeve is to thread a rope through something, and roach relates to sail or hull shape, not a navigation line.
Question 2
Which term is used to describe a nautical rope?
Correct Answer:
Line
Explanation:
On a sailboat, the term for the rope used to control sails and rigging is line. In nautical usage, line is the standard word for these ropes—everything from halyards to sheets and guys. Rope is the general everyday word, but sailors use line to refer to the actual rope involved in running rigging and control tasks. Cable denotes a thicker, often wired or fiber rope, not the typical sailing line. A knot is a tying method, not the material itself. So line is the correct term.
Question 3
Which term refers to the person responsible for steering the boat?
Correct Answer:
Helmsman
Explanation:
The main idea is naming the person who steers the boat. The term for the person at the steering position is the helmsman. The helm refers to the steering apparatus itself (wheel or tiller), so calling the person the helm isn’t correct. Head-to-wind describes a direction or sailing attitude—bow pointing into the wind—rather than a person. The headstay is a cable that supports the mast and has nothing to do with steering. So the best term for the person steering is helmsman.
Question 4
Which term means a quick reefing method that secures a section of the mainsail to the boom?
Correct Answer:
Jiffy reef
Explanation:
This question is about reefing terminology—the fast way sailors reduce mainsail area when wind picks up. A jiffy reef is a quick method to reduce sail by securing a section of the mainsail to the boom, making the sail smaller without fully dropping and re-hoisting it. This lets you maintain better balance and control in stronger winds. Kedge off describes moving the boat with an anchor or line, not related to sail adjustments. Jibe is turning the boat’s stern through the wind, which is a maneuver, not a way to reef. Keel is the underwater ballast in the hull, not a sail-reducing technique. So the fast reefing method that secures part of the sail to the boom is the jiffy reef.
Question 5
Which rig describes a two-masted boat with its mizzen mast shorter than the main mast and located at the rudder post?
Correct Answer:
Yawl
Explanation:
The key idea is how the second mast is placed and how tall it is relative to the main mast. If there are two masts and the smaller mizzen mast sits behind the rudder post and is shorter than the main mast, that is the yawl rig. The mizzen behind the rudder post is what sets yawl apart from other two-masted rigs. A ketch also has two masts, but its mizzen mast sits forward of the rudder post, not behind, so it wouldn’t fit. A sloop has only one mast, and a schooner uses two or more masts with a different sizing and arrangement that doesn’t match the described setup. So the described rig is yawl.
Question 1
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About this Exam

Prepare with the US Sailing Basic Keelboat Practice Test practice quiz. This question bank includes 10 questions covering term, describes, boat, two-masted, and mast. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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US Sailing Basic Keelboat Practice Test

This practice set contains 10 questions from the matching question bank and focuses on term, describes, boat, two-masted, and mast. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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