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Tide and Current Apps

This research investigates the effectiveness of smartphone apps in providing tidal and current information for sailors, based on a survey of 22 skippers from the Manhattan Sailing Club and observations from various platforms. Findings reveal that while tide information is often reliable, current data may be less dependable due to environmental factors. Connectivity issues, battery drainage, and data privacy concerns were significant. The study categorizes users into four profiles to enhance understanding of app usage and its implications for sailing practices.

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Tide and Current Apps

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  1. Tide and Current Apps Capt. Patricia Ensworth Manhattan Sailing Club March 18 2014

  2. Research methods • Conduct e-mail survey of 22 skippers • Racing and cruising • Coastal and offshore • 20 MSC members • 1 San Francisco Bay • 1 Gulf of Mexico • Analyze reviews, user forums, You Tube videos • Download, install, search for NYC data

  3. Research findings • Only iPhone users (reason unknown) • Few on-the-water smartphone users • Connectivity problems • Loss of device in rough waters • Battery power drainage • Unreliability of predictive current data in actual conditions • Data privacy concerns • Four user profiles for T&C data • Traditionalists (Eldridge book only) • Desktop computer planners (websites) • Standalone app users (T&C only) • Integrated app users (T&C plus other functions)

  4. NOAA Tide Predictions website http://tidesandcurrents.noaa.gov/noaatidepredictions/NOAATidesFacade.jsp?Stationid=8518750

  5. NOAA Tidal Currents Table website http://tidesandcurrents.noaa.gov/get_predc.shtml?year=2014&stn=5780+New%20York%20Narrows&secstn=Red+Hook,+1+mile+west+of&sbfh=%2B0&sbfm=51&fldh=%2B1&fldm=05&sbeh=%2B0&sbem=39&ebbh=%2B0&ebbm=45&fldr=0.8&ebbr=1.2&fldavgd=024&ebbavgd=206&footnote=

  6. NOAA Current Predictions website http://tidesandcurrents.noaa.gov/noaacurrents/Predictions?id=ACT3641_1

  7. NOAA websites on phone Tides Currents

  8. Stevens Institute website http://hudson.dl.stevens-tech.edu/maritimeforecast/maincontrol.shtml

  9. Stevens website on phone

  10. Tides: Tides Near Me free

  11. Tides: tideApp free

  12. Tides: Tide Chart free

  13. Tides: Tide Trac $2.99

  14. Tides: Tidesplanner depth alert current data available only for EU $1.99 for tide data

  15. Tides + currents: Tide Graph not all NOAA stations $1.99

  16. Tides + currents: Aye Tides $7.99

  17. Tides + wind: weather apps WindAlert and Sailflow Windfinder Pro select nearby tide stations tide data source unknown free $1.99

  18. Tides, currents, charts: Navionics $9.99

  19. Tides, Weather, Compass, GPS, Emergency call: Sea Tow free

  20. Conclusions • Whether using paper tables, websites, or mobile apps, skippers should plan for the effect of tides and currents on a sail before they arrive at the dock. • Tide information is widely available and reliable in mobile apps. • Current information may look convincing in mobile apps but it is not so reliable due to the effects of weather. • Finding out the theoretical speed and direction of the current far from a major reference station is easier with a mobile app than with paper tables. • Anyone who is concerned about data privacy and security should not download a free app with ads. • Skippers should be mindful that on the water mobile apps can distract the crew, detract from the outdoor experience, and impair teamwork. • “Information underrepresents reality.” – Jaron Lanier in You Are Not A Gadget

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