# COLREGS: Rules of the Road — Master Navigation Rules Fast > Master Navigation Rules Fast (iPhone/iPad app by JULIO ALEXANDER DELGADO.) - Source: https://appshunter.io/ios/app/colregs-rules-of-the-road/id6760242895 (this page in markdown: same URL + `.md`) - Developer: [JULIO ALEXANDER DELGADO](https://appshunter.io/developer/1883385899) - Category: Education, Reference - Price: $4.99 - Age rating: 4+ - Requires: iOS 17.0 · 3 MB - Languages: American English - Released: 2026-05-12 - Data updated: 2026-08-21 - User reviews in markdown: https://appshunter.io/ios/app/colregs-rules-of-the-road/id6760242895/reviews.md ## What is COLREGS? Prepare with confidence for the USCG licensing exam or any navigation rules qualification with the most comprehensive COLREGS study app available. Whether you're a Merchant Mariner, a professional deck officer, or a recreational boater pursuing your captain's license, COLREGS: Rules of the Road gives you everything you need to master the International and Inland Navigation Rules all in one beautifully designed app. STUDY SMARTER, NOT HARDER The built-in Spaced Repetition system uses the proven Leitner box method to surface the questions you struggle with more often and retire the ones you've mastered. Instead of grinding through every question every session, you make measurable progress toward exam-day confidence in less time. Prefer a looser review session? Switch to Shuffle Mode for a randomized run through the full question bank great for quick refreshers. 1,272 EXAM-QUALITY QUESTIONS Questions are organized across three categories that mirror actual exam structure: - International Rules open-ocean scenarios under COLREGS - Inland Rules U.S. inland waters distinctions and applications - Both rules that apply across all waters, tested together Filter by topic to focus your study where it counts: - Lights (Rules 20-31) vessel identification, arc requirements, and display obligations - Shapes day signals and their meanings - Whistles and Sounds (Rules 32-37) maneuvering and warning signals - Diagrams questions paired with one of 87 reference diagrams 87 INLINE REFERENCE DIAGRAMS Diagram questions display the relevant illustration directly within the question card no switching apps or flipping through a paper handbook. FULL NAVIGATION RULES PDF VIEWER Every question links directly to the relevant page of the official, public-domain U.S. Coast Guard Navigation Rules publication. Tap the rule reference on any question card to jump straight to the authoritative text. SIMULATE REAL EXAM CONDITIONS Quiz Mode presents question sets with a 90% pass threshold matching the rigor of real qualification exams. Your quiz history is saved automatically so you can track scores over time and see your improvement at a glance. Drill down on your weakest areas with Missed Questions Mode, which isolates every question you've answered incorrectly for targeted review. BUILT FOR HOW YOU STUDY - Bookmark any question for a personal review list - Dark and Light theme study comfortably in any lighting - No account required, no internet connection needed - One-time purchase no subscriptions, no in-app purchases WHO IS THIS FOR? - Merchant Mariners studying for USCG Deck Officer licensing - Maritime Academy and professional mariners - Recreational boaters pursuing a captain's license - Anyone who wants to know the Rules of the Road cold One-time purchase. Study anywhere. Know the Rules. Independent study aid. Not affiliated with, endorsed by, or sponsored by the U.S. Navy, the U.S. Coast Guard, or any government agency. ## Version history (last 3 releases) ### 1.3 — 2026-07-21 Bug fix: the Quick Action buttons on the Home screen (Continue Study, Take Quiz, Drill Missed, Browse Diagrams) now navigate correctly. Thanks to the users who reported this! ### 1.2 — 2026-07-05 A fresh new look: updated app icon and in-app branding. Rules of the Road is an independent study tool for the maritime COLREGS / Rules of the Road navigation exam. This release refreshes the visual design while keeping everything you rely on: 1,272 practice questions, 87 diagrams, and a spaced-repetition system that focuses your study on the questions you miss most. Not affiliated with the U.S. Navy or U.S. Coast Guard. ### 1.0 — 2026-05-12 No release notes. ## Related topics [rules of the road](https://appshunter.io/ios/topics/rules-of-the-road) · [marine rules of the road](https://appshunter.io/ios/topics/marine-rules-of-the-road) · [navigation rules](https://appshunter.io/ios/topics/navigation-rules) · [uscg rules of the road](https://appshunter.io/ios/topics/uscg-rules-of-the-road) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*