When did Navionics first include Admiralty/UKHO tidal data?

[Sandbank]

Does anyone know?

 

[Tamar]

You might want to post this on scuttlebutt to get more views

 

[Sandbank]

You might want to post this on scuttlebutt to get more views

Thanks. I'm not sure what that is though..........

 

[Tamar]

Thanks. I'm not sure what that is though..........

Go to the home page and look at the various sections. You have posted in the Bristol channel section. You need scuttlebutt or reader to reader.

 

[Sandbank]

Go to the home page and look at the various sections. You have posted in the Bristol channel section. You need scuttlebutt or reader to reader.

Many thanks for being so helpful.

 

[Mark Miller]

Hi I went to Navionics and asked for you; here's their reply.

" Tide data was introduced around 15 years ago when we launched Navionics Gold charts."

Hope that helps

 

[Sandbank]

Hi I went to Navionics and asked for you; here's their reply.

" Tide data was introduced around 15 years ago when we launched Navionics Gold charts."

Hope that helps

Thanks but my question was specifically about their use of UKHO/Admiralty tidal data and not tidal data per se.

 

[Mark Miller]

I see well I put your question as you've just mentioned and this was their reply. Just pop to their Facebook page and ask or email them or phone they are very helpful and will answer your query directly. Wish you well on your quest.

 

[Daverw]

I think it’s the same answer as they use this as base data as do I understand most do

 

[Sandbank]

Thanks but there is a reason why I am putting the question on here to people who have used their products for some time.

 

[john_morris_uk]

Thanks but there is a reason why I am putting the question on here to people who have used their products for some time.

I’ll move this thread to Scuttlebutt for you.

 

[Daverw]

Still a little confused, as the UKHO are the body that collects the costal data from various UK sources it then allows this then to be used by third parties such as Navionics I’m not sure what other sources fir the tidal data there are, perhaps I’m missing something in your question.

 

[Mark-1]

Still a little confused, as the UKHO are the body that collects the costal data from various UK sources it then allows this then to be used by third parties such as Navionics I’m not sure what other sources fir the tidal data there are, perhaps I’m missing something in your question.

There are open source harmonics so the UKHO are not the only source.

OP: Why do you think the source of the data has changed to UKHO? Is it credited somewhere?

 

[Daverw]

I know the data is available and can be calculated, but following presentations I’ve seem from the UKHO they appear to be the most common source of data for commercial use. If navionics get their chart data from them why would they not also get the tide data, that does not make sense to me to do otherwise, as it’s only a prediction I would expect no alternates are any better than others. With the UKHO havIng probably the most historical data cover8ng the UK

 

[dunedin]

Tide forecasts are a mathematical calculation thing. There are various different algorithms of different degrees of sophistication (and the real tides often don’t bother to read the tables anyway ;-)

There have been various articles comparing different sources and mobile phone apps which showed the differences.

Some phone apps pay to use the UKHO calculated data. Others use alternatives, presumably because they are cheaper?

In the past Raymarine tide figures have not aligned precisely with UKHO (cannot say either is right or wrong in this respect). Perhaps they have changed to purchase UKHO data but not seen anything announcing that.

 

[tillergirl]

Thanks but there is a reason why I am putting the question on here to people who have used their products for some time.

What is the reason please?

 

[Sgeir]

Does anyone know?

I don't believe that they have started using UKHO data. Tonight's local high tide shows difference of 26 minutes and 0.25m between the two sources.

 

[Bilgediver]

I don't believe that they have started using UKHO data. Tonight's local high tide shows difference of 26 minutes and 0.25m between the two sources.

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I don't believe they use the UKHO for cost reasons moreover the UKHO usually put a limit on third parties as to how far forward third parties can publish tidal tables based on UKHO data and this is sometimes weeks let alone months. Navionics will give you tidal date for years ahead which is very useful for fixing regatta dates a year or more ahead.

UKHO is not limited to the UK as they do produce tidal data covering world wide. This in competition with many other similar international services.

 

[Sandbank]

I don't believe that they have started using UKHO data. Tonight's local high tide shows difference of 26 minutes and 0.25m between the two sources.

Hi - but are you comparing Navionics' tidal data with Admiralty Tide Tables, Easy Tide or Admiralty Total Tide?

 

[Sandbank]

What is the reason please?

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I don't believe they use the UKHO for cost reasons moreover the UKHO usually put a limit on third parties as to how far forward third parties can publish tidal tables based on UKHO data and this is sometimes weeks let alone months. Navionics will give you tidal date for years ahead which is very useful for fixing regatta dates a year or more ahead.

UKHO is not limited to the UK as they do produce tidal data covering world wide. This in competition with many other similar international services.

The names of the tidal stations in the Navionics products exactly mirror those of UKHO tidal stations.