Search navigation instantly anywhere
COLREGs offers flag identification, weather scales, cloud recognition, sound signal guidance, and vessel light details. Users can access navigation , interpret flags, and understand sound and light signals for safe boating.
Showing 1–20 of 1,000 ranked alternatives.
Prachi Pimpalkhare
Maritime reference and learning companion.
The app provides an intuitive maritime reference and learning companion for sailors. It features illustrated signals, a complete COLREGs reference, and interactive quizzes to test knowledge.
Calculated Industries, Inc.
Access , charts, and COLREGS documents
Provides access to COLREGS and Inland , including amendments. It includes sound and light signals, steering and sailing , and other essential boating references. Users can search and bookmark regulations for quick reference.
FB Imray Laurie Norie & Wilson GmbH
Rules and signals at sea.
The app provides a reference for maritime rules and signals, including steering, lights, sound signals, and distress signals. It also covers buoyage systems, flags, radio calls, and life-saving communications with learning cards for content review.
Calculated Industries, Inc.
Complete maritime navigation regulations reference.
The app provides the International Regulations for Preventing Collisions at Sea, 1972, and Inland Navigation Rules. It features an annotated table of contents, a search function, and a selected page for quick access to rules.
Smirnov Yury
Study COLREGs rules with flashcards
Learn COLREGs through flashcards organized by specific rules. Answer questions to reinforce knowledge. Automatically save progress and reset results as needed. Track learning progress over time.
Joseph Kim
Study navigation and practice exams
Study Navigation with over 1,200 practice questions covering Inland and International waters. Topics include Steering & Sailing , Lights & Shapes, and Sound Signals. Each question has detailed explanations.
Nautica SIA
Learn chartwork and safety rules
Learn fundamentals with interactive lessons on chartwork, safety, buoyage, light signals, shapes, sound signals, meteorology, GMDSS, and anchoring. Take quizzes to test knowledge and track progress.
The Other Hat
Learn, reference, and test boating rules.
The app provides illustrations and explanations for navigation rules and signals. It helps users understand vessel interactions and collision prevention, offering quizzes for knowledge testing.
Windy Weather World Inc
Track wind and weather forecasts
Track wind conditions with detailed forecasts, maps, and compass readings. Monitor wind speed, direction, and gusts. Receive push notifications for wind alerts and storm warnings.
Stanislav Cekunov
Learn maritime and track your progress
Learn maritime with interactive quizzes and detailed flag information. Test knowledge with randomized questions. View Morse code signals using the phone’s flashlight. Track progress and identify areas for improvement through analytics.
NavX Studios LLC
Navigate with real-time charts and weather data
Access charts, maps, weather data, and AIS information. Navigate with worldwide chart coverage from multiple providers. View real-time weather and track vessel position. Set waypoints and measure distances between points.
The Other Hat
Identify vessels and activities
Access rules and definitions for quick reference. Identify vessels and activities based on maritime guidelines. Search rules instantly for use in various conditions. Includes over 100 graphics for visual identification.
Glenn Ludlow
Search , shapes, and sounds
Identify and interpret navigation , shapes, and sounds used on water. Search for exact or possible matches using a "Draw-What-You-See" interface. Access a comprehensive database of maritime signals.
Rivolu LLC
Set alerts and track forecasts
Track tides and lunar phases with NOAA data. Set custom alerts for high and low tides. View offline information. Access lunar calendar and historical data. Share details via social media. Sync with Apple Health for activity tracking.
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