Nautical Flags Helper

Learn Nautical Flags and more

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Learn every signal flag, Morse code and semaphore. Browse 1,800+ multiple-flag signals, quiz yourself at three levels and track your progress with daily goals. Learn the international signal flags, Morse code and flag semaphore in one app. Study with clear pictures and flashcards, then test yourself with quizzes at three levels. Made for sailors, boaters, sea cadets, maritime students and anyone curious about how ships talk to each other. SIGNAL FLAGS, A TO Z • All 26 letter flags, from Alfa to Zulu, with the phonetic name of each one • The meaning of every flag when flown alone, such as A: "I have a diver down; keep well clear at slow speed" and O: "Man overboard" • Ten numeral pennants with their code words, such as Nadazero and Unaone • The four substitute flags and the answering pennant, with how each one is used MULTIPLE-FLAG SIGNALS Browse more than 1,800 flag signals based on the International Code of Signals (Pub. 102, 2020 edition). • General two-letter signals, such as NC "I am in distress and require immediate assistance" • Medical three-letter signals that start with M, such as MAA "I request urgent medical advice" • Worked examples of numbers: courses, bearings, dates, times, latitude, longitude, distance and speed • Step-by-step examples of how substitute flags repeat a flag in the same hoist • Tables of complements that add detail to a signal, like the kind of assistance or the state of the sea • Search by code or by word, and switch to List View to see every meaning at a glance MORSE CODE • Dots and dashes for every letter and number • Tap Listen to hear how each character sounds FLAG SEMAPHORE • Arm positions for every letter and number • Special signals such as Attention, Error, Cancel, Numerals and Space STUDY YOUR WAY • Flashcard Mode: tap a card to flip it and check your answer • Shuffle the cards or sort them from A to Z • Zoom in to see the details of each flag • Short explanations of each topic, with links to read more on Wikipedia QUIZZES AT THREE LEVELS • Easy (10 questions), Medium (20 questions) and Hard (30 questions) • Match a picture to its name, or a name to its picture • Medium and Hard also ask what each signal means • Hard picks wrong answers that look like the right one, so you learn the differences between similar flags and Morse patterns • Use a hint to remove two wrong answers • Build a custom quiz from letters, numbers, Morse code and semaphore • Turn on "Next question automatically" for faster practice • See your correct, incorrect and skipped answers and your time after each quiz TRACK YOUR PROGRESS • Daily goals for questions answered and study time • Charts of correct and incorrect answers by day, week, month and year • Total quizzes, average accuracy, time spent and best score BUILT FOR IPHONE AND IPAD • Light and Dark Mode, or follow your system setting • Layouts made for iPhone and iPad • Available in English, Spanish, French and Russian Whether you are preparing for a sailing course, refreshing your seamanship skills or teaching a youth group, Nautical Flags Helper keeps the flags, Morse code and semaphore in your pocket. The app is free to use and shows ads. An optional one-time in-app purchase removes all ads. There is no subscription. This app is a study aid. It is not an official publication and is not intended for navigation.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

A major update — Nautical Flags Helper has grown a lot since our last notes. NEW: MULTIPLE-FLAG SIGNALS • Browse 1,800+ flag signals from the International Code of Signals (Pub. 102, 2020 edition) • Search by code or by word, and switch to List View to see every meaning at a glance REDESIGNED FROM THE GROUND UP • All-new design with Light and Dark Mode • Flashcard Mode — flip cards to check your answer, shuffle or sort A to Z • Tap Listen to hear any Morse code character • Layouts built for iPhone and iPad, with side-by-side study on wide screens SMARTER QUIZZES • Three difficulty levels: Easy, Medium and Hard • Hints, "next question automatically," and a custom quiz builder • Hard mode uses similar-looking wrong answers so you learn the real differences TRACK YOUR PROGRESS • Daily goals for questions answered and study time • Charts of correct and incorrect answers by day, week, month and year MORE TO LOVE • New onboarding walkthrough and a searchable language picker (English, Spanish, French, Russian) • Accessibility improvements: screen reader support, haptics, reduced motion • Optional one-time purchase to remove all ads — no subscription • Many crash fixes and stability improvements

Version 3.6

The developer, Dmitrii Napolov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Dmitrii Napolov
Size
48.4 MB
Category
Education
Compatibility
Requires iOS 16.0 or later.
  • iPhone
    Requires iOS 16.0 or later.
  • iPad
    Requires iPadOS 16.0 or later.
  • Mac
    Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2024 Dmitrii Napolov
  • Privacy Policy

    • More by Dmitrii Napolov

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