How it works

1. Onboarding sets up your plan

Three steps: pick your target credential (OUPV Inland / Near-Coastal / Master 25/50/100), enter your exam date, set your weekly study budget. The study-plan generator sequences modules by exam frequency — Rules of the Road first, mocks last — and reserves the final week of your plan for full 70-question mock exams.

2. Lessons explain each topic with inline citations

Every lesson is generated against the source corpus and judged by a separate validator model. Inline citations are clickable — the popover shows the actual rule text from 33 CFR, COLREGs, or Bowditch. No mystery facts.

3. Drill mode hammers the topics

Three modes:

• Daily drill — adaptive 10–20 questions weighted toward your weakest topics, surfaced from your mastery EMA.
• Topic drill — pick a specific topic (e.g. Rule 19 Restricted Visibility) and drill until you've cleared the question pool.
• Mock exam — 70 questions × 90 minutes, weighted by module to mirror the NMC OUPV format. Real countdown timer, flag-for-review, question-grid navigator.

4. Flashcards lock it in (FSRS-4)

200+ generated flashcards on the highest-frequency facts, scheduled by FSRS-4 — a modern spaced-repetition algorithm that adapts review intervals to your actual recall pattern. The hardest topic this week becomes the lightest by exam day.

5. Mastery + progress

Per-topic mastery is tracked as an exponential moving average of recent correctness. Weak topics surface to the top of your daily drill and study plan. The progress page shows a heatmap so you can see at a glance where to focus.