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Old 20 April 2005, 16:48   #11
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It's not about money ... I was challanged to find FREE tide info online after I told a bunch of my students (who have no money) who are doing dive planning that such a Web site must exist. They claim they could not find the info, which I doubted and laughed at!!

However I looked and also failed .... not wanting defeat at the hands of my rabble, I put the question to you fine people!

But equiped with the responses on this thread I looked again. Unfortunately ... I still don't have free tide info beyond 6 days from now. Despite peoples suggestions I still can not find the info online without payment. I am not sure it exists ... I may have lost this one.
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Old 21 April 2005, 04:32   #12
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WXTides is good if you play with it. There was an issue about licences for UK but is looks like they have sorted it out now. Des
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Old 21 April 2005, 05:23   #13
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In 2001, the UK Hydrographic Office (UKHO) claimed copyright over all the existing tidal data that they maintained, covering the UK as well as some countries outside the UK. They removed the information from the public domain and started to charge to use it.

Unfortunately it appears that there wasn't anybody with sufficient resources to make an effective challenge via the courts. So for a while there was no freely available UK tidal information.

However, at the end of 2003 the British Oceanographic Data Centre agreed for its own data (collected independently from the UKHO) to be used in XTide which is the "engine" that drives many of the free tide prediction programs. This means that certain key UK ports are now available in programs like WXtide32.

More details about UKHO's action here: http://www.flaterco.com/xtide/faq.html#60

More details about the new UK tidal information here: http://flaterco.com/pol.html

John
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Old 21 April 2005, 05:50   #14
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Iíve been using an older version of tidetools on my Palm for a couple of years and find it useful as a quick guide The version I have runs of the UKHO data base so is probably illegal Des
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Old 21 April 2005, 07:25   #15
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Some questions occur to me:

1. Has anyone paid UKHO for access to the data which they can then share with us?
2. ditto above, but built it into their products i.e. plotter chips?
3. If I have such chips, can I share this data with other rib.net users?

You can see which way my thinking is going, can't you?
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Old 21 April 2005, 08:26   #16
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Quote:
Originally Posted by Andy

But equiped with the responses on this thread I looked again. Unfortunately ... I still don't have free tide info beyond 6 days from now. Despite peoples suggestions I still can not find the info online without payment. I am not sure it exists ... I may have lost this one.

http://www.ybw.com/weather/home.html

14 days - easy - you have won your bet!!!!
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Old 21 April 2005, 08:30   #17
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Originally Posted by Brian
You can see which way my thinking is going, can't you?
We can phone you up and ask whether the tides in?

John
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Old 21 April 2005, 11:09   #18
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JK,

Something like that!
I mean, if one of my friends on rib.net wants to know when high tide is at The Point of Ardnamurchan on 26th July 2008 is, and sends me an e-mail asking me, surely I can tell him? (It's midnight exactly !).
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Old 21 April 2005, 12:00   #19
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An interesting idea (and one you may come to regret )

I don't know what copyright there is, if any, on actual tidal predictions. The issue with the UKHO is the use of the underlying constants that are used to calculate the predictions.

John
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Old 21 April 2005, 12:08   #20
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JK,

Something like that!
I mean, if one of my friends on rib.net wants to know when high tide is ..... and sends me an e-mail asking me, surely I can tell him?
OK, why the f.... was the tide 2 hours late at Port Seton on Saturday evening last?

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