Improved current data? Let the IHO know you care.

Ben Ellison

Ben Ellison

Panbo editor, publisher & chief bottlewasher from 4/2005 until 8/2018, and now excited to have Ben Stein as very able publisher, webmaster, and editing colleague. Panbo is going to the next level in 2019 and beyond.

7 Responses

  1. Ben Ellison Ben Ellison says:

    To be perfectly clear, I think that Plan2Nav tidal current predictions are as good as anything similar.
    That said, Plan2Nav does not (yet?) let you see predictions for future hours and days, but it’s got a lot else going for it.

  2. thedon says:

    MaxSea/Nobeltec TimeZero has high resolution tidal currents (for US & Europe). TimeZero also plays a prediction as well. Further to that, TimeZero has a downloadable snapshot of oceanic currents for the previous day (00:00UTC).

  3. Ben Ellison Ben Ellison says:

    In your dreams, thedon! I’ve used Maxsea/Nobeltec TimeZero quite a lot — as well as NavNet 3D, TZT, and the TZ app (love them all) — and have never seen U.S. tidal current resolution better than the same flawed NOAA data that everyone else has. Europe I don’t know about, and while the free MaxSea ocean current (and weather) model data is neat stuff, it has nearly zero relevance to coastal cruising, I’m pretty sure.

  4. jsandero says:

    I’ve never understood why we can’t be progressing toward a system of buoys with all sorts of transducers for weather and sea state which upload the data real time and it can be then accessed via internet or some other broadcast technology so mariners could have real time data on board.
    Most of the reports of weather buoys in LIS seem to not be reporting (malfunctioning?) so the NOAA reports don’t have this data.
    The net can provide access to vid cams all over the place. Why can’t a similar technology provide this data?
    But yeah… the algorithm showing currents and tides seem mickey mouse and unreliable with my ray GPS chart plotter.

  5. Ben Ellison Ben Ellison says:

    Well, weather buoys like that are darned expensive to build and maintain. I think we’re lucky — especially in these days of “making government so small you can drown it in a bathtub” — that many research facilities are sharing the task with NOAA. For instance, we have the fabulous F01 Penobscot Bay buoy owned and operated by our state U:
    http://neracoos.org/datatools/realtime/all_data?platform=F01
    I use that data regularly but the least useful may be the current speeds and directions, though I suspect those may be the most expensive sensors. The problem is that there’s little relationship I know of between the current speeds at that particular spot and elsewhere. Current measurement and prediction is hard!
    Tide predictions, incidentally, are a different matter. The predictions are pretty accurate and the real world effect is not radically different at nearby spots. (Though this less true in areas like the Florida panhandle where where relatively weak tidal forces vary from semi-diurnal to diurnal and weather plays a much larger role in surface currents.)

  6. Anonymous says:

    LIS east-west surface currents are greatly affected by wind. Take the Ray results and factor in a delay based on the wind direction and speed Ray reports by + or – 15, 30, or 45 minutes.

  7. Jeffrey Orling says:

    Yes, of course with funding cut backs this is not likely to happen, unless some of the waste, fraud and abuse is applied to civilian projects such as weather and sea data collection around our shores.
    I’m sure some high tech company could produce a device attached to existing buoys which could do this. But the only customer would be the USG and so there is not much incentive to develop them.

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