Master maritime navigation signals with interactive flashcards and quizzes. Learn day shapes, navigation marks, vessel lights, and sound signals. Features offline study, progress tracking, and a dark theme for night use.






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Master maritime navigation signals with interactive flashcards and quizzes. Learn day shapes, navigation marks, vessel lights, and sound signals. Features offline study, progress tracking, and a dark theme for night use.











Master navigation lights and day shapes for skipper exams with this flashcard app. It uses spaced repetition to build lasting visual memory, tracks your progress, and resurfaces difficult configurations until they stick. Study offline with no ads or subscriptions.