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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 · 4 ai-built · 5 hand-coded · 9 unlabelled

Operator · 2 indie · 9 commercial · 7 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 18 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 61WinGPS Yacht Navigator0★1 yrabandonedlivecommercialMarine navigation app for water sports and commercial shipping that displays digital nautical charts, tracks routes, and manages waypoints for vessels.
  2. 62Anchor Alarm: ZENKOU PRO0★1 yrabandonedlivecommercialBoat safety app that monitors anchor position, alerts mobile devices when drifting, and tracks vessel location via live charts.
  3. 63Navigation Lights 3D0★1 yrabandonedliveindieMobile app that displays 3D night lights and day shapes of vessels to teach navigators how to interpret ship types under maritime collision rules.
  4. 64EZ Celestial Navigation0★1 yrabandonedliveCelestial navigation app that generates nautical almanac tables and helps sailors calculate position fixes from sextant observations.
  5. 65caribbean-vessel-watch0★1 yrabandoned—ai-builtWeb app that tracks vessel movements and locations in the Caribbean for maritime monitoring and navigation.
  6. 66Marine Navigation-USA Lake Map0★1 yrabandonedlivecommercialMarine navigation app that offers NOAA charts, lake maps, route creation, voice prompts, tides, and GPS tracking for boaters.
  7. 67Boater's Pocket Reference0★4 yrabandonedlivehand-codedcommercialMobile reference app providing boating information, navigation rules, weather guidance, knots, and mechanical and electrical tips for boaters of all levels.
  8. 68Memory-Map0★5 yrabandonedlivehand-codedcommercialMobile GPS app that turns a phone into an offline outdoor navigator or marine chart plotter with downloadable topographic and nautical maps for backcountry and marine use.
  9. 69i-Boating: USA Marine Charts0★5 yrabandonedlivehand-codedcommercialMarine navigation app that provides NOAA charts, lake maps, route planning with voice prompts, tide predictions, and GPS tracking for boaters.
  10. 70Seawell Navigation Charts0★4 yrabandonedlivehand-codedMarine navigation app that displays offline charts, GPS tracking, and waypoint markers for sailors, fishermen, divers, and boaters.
  11. 71eOceanic0★unknownlivecommercialSubscription app providing marine charts, pilotage routes, and real-time navigational guidance for coastal sailors along England and Ireland.
  12. 72Navigation Marine0★1 yrabandonedliveMobile app that equips sailors and boaters with speed in knots, GPS position, waypoint marking, and nautical distance measurement for navigation and anchoring.
  13. 73NOAA Marine Forecast & Weather0★3 yrabandonedlivecommercialMap-based app showing spot-specific marine weather forecasts, tides, wind and wave conditions, and severe weather advisories for US coastal waters.
  14. 74Celestial Navigation0★6 yrabandonedlivehand-codedindieMobile app that calculates a line of position from sextant readings using a nautical almanac, showing intermediate values for manual verification.
  15. 75Streamlit0★unknownliveai-builtWeb app for reporting boat incidents and tracking maritime safety events for boaters and authorities.
  16. 76CTM Marine - Dealer Locator0★unknownliveai-builtcommercialWeb app that helps users locate authorized dealers and distributors of a marine equipment brand using an interactive map and contact details.
  17. 77Arielle Kreuzfahrten0★unknownliveai-builtRiver cruise app that uses GPS to identify and explain points of interest along the route.
  18. 78Skipper Study - Day Skipper theory practice0★unknownliveWeb app that offers randomized quiz rounds for Day Skipper theory, covering buoyage, lights, tides, chartwork, navigation, safety, and rules.

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.