V4 & P+ #3, live tides & currents

Ben Ellison

Ben Ellison

Panbo editor, publisher & chief bottlewasher from 4/2005 until 8/2018, and now pleased to have Ben Stein as a very able publisher, webmaster, and editing colleague. Please don't regard him as an "expert"; he's getting quite old and thinks that "fadiddling fumble-putz" is a more accurate description.

2 Responses

  1. DefJef says:

    I think the tide information should be on all the time(but you can turn them off), be more subtle than big green arrows and perhaps more dense… like some GRIB charts and perhaps animated a bit. This may be asking a lot. If you cursor over to a tide “arrow” and hit enter it should tell you the predicted current. The length of the area has no intrinsic meaning.
    I would also like to have the software show you where you will be in the future if you maintain present course.
    If I am not mistaken, the GPS devices which calculate time of arrival do not account for the changing current and produce a TTG or time of arrival assuming the present SOG and COG.
    This sort of information is handy, for example when sailing up or down the length of Long Island Sound for example where you might want to figure out where you can anchor for the night etc.
    I would think that these machines have the processing power to do this type of predictions with tide info included.

  2. ibsailn says:

    That sort of TTG including tidal streams is done by routing programs such as Expedition or MaxSea (as well as routing for wind speed and direction). Obviously this is doing far more than just correcting for tidal streams, but it does take quite a bit of computing power (30 seconds or more on my laptop depending on the settings I choose).

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