Study Inland and International Navigation Rules separately, then mix them
Many questions become difficult because similar scenarios are governed by different wording depending on the waters involved.
Label the waters first
Before working the scenario, identify whether the question says Inland only, International only or applies to both. Do not let a familiar phrase replace that first step.
Build a distinction list
When a missed question turns on an Inland or International difference, record the rule citation and the exact fact that changed the answer.
Compare related questions
Study similar scenarios side by side. Explain aloud why the water designation matters and which part of the rule supports the result.
Return to mixed practice
Once the distinction is clear in isolation, use shuffled questions so you must identify the governing rules from the scenario rather than from the study category.
Frequently asked questions
Does COLREGS Prep separate Inland and International questions?
Yes. Questions are classified as Inland, International or applicable to both, and the study tool supports filtered and mixed review.
Why are Inland and International questions easy to confuse?
The scenarios and terminology can be similar. A reliable method is to identify the waters first, then use the cited rule rather than relying on memory of a similar question.
Where can I read the official rules?
Questions in COLREGS Prep link to the relevant page of the official public-domain U.S. Coast Guard Navigation Rules publication included with the study tool.
Practice with the complete study tool
COLREGS: Rules of the Road includes 1,272 questions, 87 diagrams, spaced repetition, quizzes, missed-question review and official rule references. It is a one-time purchase for iPhone and iPad.
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