Nav Rules: COLREGS Exam Prep

USCG deck exam practice tests

$14.99 · Designed for iPad. Not verified for macOS.

1,200 questions, 83 diagrams and the full rule text in 52 chapters — all offline, no subscription. Built for the 90% pass line on the Rules of the Road exam. Rules of the Road is the module that fails people. It is closed book, it is usually graded at 90%, and the International and Inland texts differ in ways that are easy to mix up under time pressure. This app is built for that one problem. 1,200 questions. The full rule text, 52 chapters. Completely offline. WHAT YOU GET • 1,200 multiple-choice questions covering International, Inland, and questions that apply to both • 83 original vector diagrams for lights, shapes and vessel encounters — tap any one for full screen, pinch to zoom • The complete rule text in 52 chapters, with International and Inland shown side by side so you can see exactly where the two diverge • 54 further figures inside the rule text itself • Full-text search across every rule and every question PRACTICE THE WAY YOU ACTUALLY STUDY Filter by zone — International, Inland, or both. Filter by topic: lights and shapes, sound and light signals, steering and sailing, restricted visibility, general definitions, distress, annexes, inland-specific. Or filter by where you stand: unseen, previously missed, bookmarked, or due for review today. Answers are graded the moment you tap. Many questions link straight through to the rule sections that may be relevant, so you can go read the actual text instead of memorizing an answer. EXAM MODE Choose the question count and zone, start the timer, and get no feedback at all until you submit — the way the real thing works. The results page gives you your score against the 90% line, your misses grouped by topic, and every question available for review. Answer choices are reordered wherever the wording allows, so you can never fall back on remembering a position. REMEMBER IT UNTIL TEST DAY A spaced-repetition queue schedules each question to come back just before you would have forgotten it. Missed questions stay in the missed list until you have answered them correctly and consistently. Bookmark anything you want to return to. KNOW WHERE YOU STAND A readiness dial estimates your score for each zone. A topic heatmap shows which areas are weak. Per-rule accuracy tells you which specific rule to go reread. Streaks, total questions answered, and average time per question are all tracked. BUILT FOR HOW MARINERS STUDY • 100% offline. No signal needed, ever — it works at sea, at the dock, and in the yard. • No account and no sign-up • No ads, no subscription, no in-app purchases. One purchase and it is yours. • Optional iCloud sync keeps your progress in step across iPhone and iPad • Dark appearance by default, plus an extra font size step above the system setting for anyone who wants larger type WHO IT IS FOR Candidates for OUPV (six-pack), Master under 100 tons, and Mate/Master at every level. Academy and maritime school students working through the rules alongside coursework. Boat owners who simply want to understand what the lights ahead of them mean. A NOTE ON ACCURACY Rule text is reproduced from the published navigation rules. The links between a question and a rule are suggestions to help you find the relevant passage — the rule text itself is the authority, and the app words it that way rather than pretending otherwise. This app is an independent study aid. It is not affiliated with, endorsed by, or an official publication of the U.S. Coast Guard or the National Maritime Center.

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    • Supported Features

      • VoiceOver

      • Voice Control

      • Larger Text

      • Dark Interface

    Information

    Seller
    Yongliang Wang
    Size
    13.7 MB
    Category
    Navigation
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 MZSoft
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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