OUPV Exam Modules Explained: Q100, Q170, Q171 and Q172

Confirm the module list before building a calendar

The National Maritime Center currently lists four modules for the OUPV Near Coastal examination path: Q100 Rules of the Road, Q170 Deck General/Safety, Q171 Navigation General: Near Coastal, and Q172 Navigation Problems: Chart Plot. Confirm the live ONC07 examination page before relying on this article because route, policy, or administrative details can change.

Do not use the same calendar for every OUPV route. Great Lakes, Inland, and other routes can have a different module mix. The official NMC page for the credential you are taking is the authority.

Q100: Rules of the Road

Q100 is an application test, not only a vocabulary quiz. Your preparation should cover Inland and International Navigation Rules, vessel lights and shapes, sound signals, crossing and overtaking situations, responsibilities between vessels, and restricted visibility.

For each practice question, identify the vessel situation before looking at the answer choices. Ask: Which rules apply? What is the relative aspect? Is the situation crossing, overtaking, head-on, or affected by restricted visibility? Then explain why the selected action follows from the rule.

An error log is more useful than a list of missed question numbers. Record categories such as “treated overtaking as crossing,” “used Inland wording,” or “read the light without identifying the aspect.” Use those categories to choose the next review session. The Navigation Rules practice guide goes deeper into this workflow.

Q170: Deck General/Safety

Q170 combines practical deck knowledge and safety subjects. The NMC topic list includes areas such as seamanship, watchkeeping, vessel handling, emergency procedures, fire prevention and firefighting, lifesaving, ship sanitation, communications, and maritime law.

Group the material by operation instead of studying a random list. One block can cover watchkeeping and seamanship, another can cover emergency response, and another can cover fire and lifesaving equipment. After each practice session, identify which block needs the next review.

Safety questions often reward a sequence of actions rather than a memorized phrase. Practice explaining what the mariner should recognize first, what risk is being controlled, and why the answer is consistent with the applicable reference.

Q171: Navigation General: Near Coastal

Q171 connects charts, publications, position determination, compass concepts, tides, piloting, and practical navigation decisions. Study it with the reference materials that apply to the current examination, and keep calculations attached to the situation that produced them.

A useful sequence is concept, worked example, untimed practice, timed practice, and error review. If you can obtain the correct answer but cannot explain the setup, the skill is not stable yet. Return to the chart, formula, or navigation principle before taking another random quiz.

Q172: Navigation Problems: Chart Plot

Q172 requires a controlled chart-plot workflow. Prepare the chart, plotting tools, symbols, calculations, and time-management habits together. Start by reading the complete problem and labeling known values; do not move the ruler before you know what the question asks.

Keep an error log with categories such as scale, units, course, distance, variation, deviation, plotting order, starting point, and arithmetic. Patterns in that log tell you whether you need concept review or more repetition. See the Q172 chart plot guide for a repeatable setup.

A four-week study structure

Week 1: Confirm the official route and module list. Take a short diagnostic in all applicable modules.

Week 2: Work through Q100 and Q170 in focused sessions. Explain missed rules and safety concepts in your own words.

Week 3: Alternate Q171 concepts with Q172 chart-plot problems. Record the first error in each problem.

Week 4: Use mixed, timed practice tests. Reserve the final sessions for recurring weaknesses, not only familiar questions.

Use USCG Prep practice to organize this loop, read about the independent study model on the about page, and compare access on pricing. USCG Prep supports practice and review; the NMC controls eligibility, examination administration, and credential issuance.