DatumFlag

DatumFlag App Description et Analyse

Qu'est-ce que l'application DatumFlag? DatumFlag — International Code of Signals

Master maritime flag signals with DatumFlag, the third app in the Datum trilogy. Built for seafarers, cadets, amateur radio operators, and anyone fascinated by the elegant visual language of the sea.

COMPLETE ICS REFERENCE

Browse all 40 international signal flags — 26 letter flags, 10 numeral pennants, the answering pennant, and 3 substitutes. Each flag entry includes its letter designation, phonetic name, NATO phonetic alphabet, Morse code, single-flag meaning, and design description. Flags with semaphore positions show an animated stick figure demonstrating the correct arm positions from the viewer's perspective.

TWO-FLAG SIGNAL CODES

Explore the full catalogue of two-flag signal codes used in ship-to-ship and ship-to-shore communication. Filter by category — distress, navigation, manoeuvres, medical, meteorological, and more. Each signal shows its component flags with meanings and full signal interpretation.

SEMAPHORE TRANSMITTER

Type a message and watch it transmitted letter by letter in flag semaphore. An animated signaller raises and lowers flags through the correct positions for each character, with transmitted letters appearing as their corresponding ICS flags beneath. Adjust signalling speed from Cadet to Yeoman.

EIGHT QUIZ MODES

Test your knowledge across eight distinct quiz modes:

Flag → Meaning: identify what a flag signals
Meaning → Flag: find the flag for a given meaning
Flag → Letter: name the letter a flag represents
Letter → Flag: pick the correct flag for a letter
Phonetic → Flag: match NATO phonetic words to flags
Morse → Letter: decode Morse code to letters
Signal → Meaning: interpret two-flag signal codes
Semaphore → Letter: read semaphore arm positions
Choose from 10, 20, or 40 questions per session, or select Endless mode. Three difficulty levels control the number of answer options presented.

RETRO CRT AESTHETIC

DatumFlag renders everything through a phosphor-screen aesthetic inspired by vintage computer terminals. Choose between classic green and warm amber colour themes. The interface evokes the glow of a bridge console or signals office CRT — because maritime communication deserves more atmosphere than a flat white screen.

PART OF THE DATUM SERIES

DatumFlag joins DatumLight (lighthouses and navigation aids) and DatumMark (sea marks and buoyage systems) in the Datum series — a collection of focused reference tools built for clarity and offline use.

No account required. No network connection needed. No subscriptions. Just signals.

👋 Si vous aimez l'application DatumFlag, pouvez-vous la partager avec vos amis?

DatumFlag Commentaires et Critiques (2026)

DatumFlag Client de Service

Que pensez-vous de l'application DatumFlag? Pouvez-vous partager vos plaintes, expériences ou réflexions sur l'application avec Stuart Woolley et les autres?

DatumFlag Apps Captures D'écran et Images

DatumFlag iphone, ipad, apple watch ve apple tv images d'application.

Installation et Téléchargement de l'application DatumFlag (Version 1.0)

L'application DatumFlag ios a été développée par Stuart Woolley [ID développeur: 315697638] et est sortie dans la catégorie Éducation le mardi 17 mars 2026. La taille du fichier de l'application est de 3.48 MB. Cette application a été évaluée par 16 utilisateurs et a une note de 1 sur 5. La dernière version de DatumFlag publiée le mercredi mardi 17 mars 2026 est la 1.0. Le logiciel IOS 26.2 et supérieur fonctionne correctement. Google Play ID: com.fiddlemeragged.DatumFlag. Langues prises en charge par l'application: