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CLUSTER MARINE-BOATERS-NAVIGATION · 78 ENTRIES · EARLIEST ENTRY 2009-09-24

Marine navigation and weather apps

This cluster comprises marine navigation, weather, tide, and boating assistance apps, ranging from professional route optimization and AIS tracking to recreational chartplotting and fishing aids. Entries were added periodically across many months from 2009 to mid-2026, with mostly single entries per month and occasional pairs, though six members lack source dates. The traction leaders, each with zero stars, are coco-boat-ios, i-Boating, and iNavX.

Entry timeline

ENTRY TIMELINE

JUL 2009: 1AUG 2009: 1SEP 2009: 1FEB 2010: 1DEC 2010: 1APR 2011: 1AUG 2011: 1NOV 2011: 1JAN 2012: 1MAY 2012: 2AUG 2012: 1OCT 2012: 2FEB 2013: 2MAR 2013: 1APR 2013: 2JAN 2014: 1APR 2014: 1OCT 2014: 1APR 2015: 1MAY 2015: 1JUN 2015: 1OCT 2015: 1DEC 2015: 1JAN 2017: 1MAY 2017: 1AUG 2017: 2JAN 2018: 1FEB 2018: 1JAN 2019: 1FEB 2019: 1APR 2019: 1SEP 2019: 2JUN 2020: 1NOV 2020: 1JAN 2021: 1FEB 2021: 1MAR 2021: 1MAY 2021: 1OCT 2023: 1MAR 2024: 1JAN 2025: 1APR 2025: 1MAY 2025: 1JUN 2025: 1OCT 2025: 1DEC 2025: 1JAN 2026: 2MAR 2026: 1APR 2026: 3MAY 2026: 1JUN 2026: 2AUG 2026: 8SEP 2026: 8OCT 2026: 1
JUL 2009OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 2 ai-built · 3 hand-coded · 15 unlabelled

Operator · 1 hobby · 3 indie · 8 commercial · 1 enterprise · 2 open source · 5 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 41The Anchors: Marine navigation0★2 yrabandonedliveindieMobile app showing current map location, speed, bearing, coordinates, and altitude, with saved anchor points for boaters and sailors.
  2. 42Marine Navigation - Canada0★3 yrabandonedliveMarine navigation app offering offline nautical charts, voice-guided boating routes, custom waypoints, and route creation for coastal waters.
  3. 43Navigation Rules0★4 yrabandonedlivehand-codedcommercialReference app containing international and inland collision-avoidance navigation rules for boaters, with search and bookmarking of specific regulations.
  4. 44OpenCPN0★15 yrabandonedlivehand-codedopen sourceMarine navigation application that displays electronic charts, GPS position, AIS vessel data, and supports autopilot and weather plugins.
  5. 45Navigation Rules Pro0★4 yrabandonedlivehand-codedcommercialReference app that compiles collision-avoidance regulations, inland navigation rules, signal charts, and quick-reference boating information for recreational and commercial mariners.
  6. 46C-MAP: Boating0★3 molivecommercialBoating navigation app providing worldwide charts, route planning, waypoints, weather forecasts, and premium GPS and offline features via subscription.
  7. 47Squid - Marine Navigation0★15 dayslivecommercialMobile weather routing app for offshore sailors offering multi-model marine forecasts, smart route optimization, and chart visualization for racing and cruising.
  8. 48Waterway Guide0★5 molivecommercialBoating app providing a database of marinas, anchorages, navigation hazard alerts, and waterway guidebooks with community reviews and offline access.
  9. 49SeaNav US0★4 moliveindieBoating navigation app offering NOAA vector charts, route planning, tracking, live AIS targets, and augmented reality navigation aids.
  10. 50Ventus PRO0★4 molivecommercialMobile remote control for sailing navigation software that lets skippers manage courses, marks, timers, and man-overboard alerts from a handheld device.
  11. 51sea-route-optimizer0★5 mo—ai-builthobbyMaritime route optimization app that calculates optimal shipping routes between ports based on distance, fuel use, cost, safety, weather, traffic, and risk zones.
  12. 52GWeatherRouting0★6 mostaleliveopen sourceOpen-source sailing routing software that uses weather data to plan optimal routes for sailors.
  13. 53iSailGPS : NOAA USA RNC Charts0★5 moliveindieNautical navigation app that turns a phone into a GPS receiver with NOAA charts, tracks, waypoints, and routes.
  14. 54Boating Navigation GPS Offline0★6 mostaleliveOffline boating navigation app that plans safe routes using depth data, blocks dangerous areas, and provides GPS tracking and anchor alarms.
  15. 55Nami Navigator0★7 mostaleliveGPS waypoint tracker app that saves locations with one tap and provides compass navigation back to marked fishing, diving, and boating spots.
  16. 56Wärtsilä iSailor0★7 mostaleliveenterpriseMarine navigation app that displays electronic charts and vessel position for amateur sailors on seas and rivers, with downloadable chart packs.
  17. 57Searebbel0★7 mostalelivecommercialBoat navigation app that turns a smartphone into a controller for keeping course, navigating waypoints, and following drawn paths.
  18. 58pesquisaMaritima0★10 mostaleliveWeb app that lets users search and explore maritime data records and information.
  19. 59AIS Maps: Marine & Lake charts0★11 mostalelivecommercialMarine navigation app that displays live vessel positions, offline nautical charts, route planning, and GPS tools for boaters.
  20. 60sleek-ship-voyage-tracker0★1 yrabandoned—ai-builtShip voyage tracker that displays vessel positions and routes for maritime navigation.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.