Not to be used for ...

[TiggerToo]

... navigation.


Has anyone got any idea about what other uses Navionics charts (webApp) may be put to?
This sort of makes me ROTFLMAO.
I realise they are probably covering their "A"s, but still... could their lawyers not come up with something more discreet and less hypocritical?

 

[anoccasionalyachtsman]

... navigation.

View attachment 119631
Has anyone got any idea about what other uses Navionics charts (webApp) may be put to?
This sort of makes me ROTFLMAO.
I realise they are probably covering their "A"s, but still... could their lawyers not come up with something more discreet and less hypocritical?

Most of the car ones I've used do the same and ask you to press an ok button. Unlike one Garmin chartplotter I had though, the car ones start to work if you ignore the button for a few seconds. I wonder how their lawyers square that? In any event, aren't these caveats worthless on products sold expressly for the purpose?

 

[TiggerToo]

aren't these caveats worthless on products sold expressly for the purpose?

In my opinion, they give The Law a bad name. This fosters cynicism. At best you can laugh about it. At worse, it is corrosive.

Anyhow, we will ... sail on.

 

[johnalison]

I think that it is a useful reminder to those of us who may easily become over-confident.

 

[Sticky Fingers]

... navigation.

View attachment 119631
Has anyone got any idea about what other uses Navionics charts (webApp) may be put to?
This sort of makes me ROTFLMAO.
I realise they are probably covering their "A"s, but still... could their lawyers not come up with something more discreet and less hypocritical?

What's wrong with that? It's an aid for leisure boaters. If you want an electronic Navigation tool that is ceertified for navigation purposes you can certainly buy one. It won't be cheap.

 

[penberth3]

I think that it is a useful reminder to those of us who may easily become over-confident.

Yes, you need to check it's up to date. That screen-shot apparently pre-dates the Lizard lighthouse. Or has it been demolished since I last looked?

 

[Graham376]

What's wrong with that? It's an aid for leisure boaters. If you want an electronic Navigation tool that is ceertified for navigation purposes you can certainly buy one. It won't be cheap.

It could be argued that any chart, electronic or paper, isn't fit for navigation not too long after publication unless regularly updated. The (now unused) charts we have for Irish Sea for instance are so outdated they don't show any of the wind farms.

 

[Sticky Fingers]

It could be argued that any chart, electronic or paper, isn't fit for navigation not too long after publication unless regularly updated. The (now unused) charts we have for Irish Sea for instance are so outdated they don't show any of the wind farms.

That's right. Paper may have that feel of accuracy about it, but the reality is that paper charts for most leisure sailors are likely to be far less current than a £30 app on a smartphone.

 

[DJE]

Yes, you need to check it's up to date. That screen-shot apparently pre-dates the Lizard lighthouse. Or has it been demolished since I last looked?

That's what I hate about vector charts.

 

[smert]

That's what I hate about vector charts.

That's what I love about Vector charts! You don't need to know what the light characteristics of a particular lighthouse are when you are looking at a chart at 1inch to 200miles scale, but zoom in and all the detail is there

 

[AntarcticPilot]

... navigation.

View attachment 119631
Has anyone got any idea about what other uses Navionics charts (webApp) may be put to?
This sort of makes me ROTFLMAO.
I realise they are probably covering their "A"s, but still... could their lawyers not come up with something more discreet and less hypocritical?

You often see this, and anyone other than government agencies is well advised to have a warning on their maps or charts. However, "Not for Navigation" is unlikely to hold up in court on a product sold for navigation, unless it was taken as shorthand for our approach. The approach we took was usually a statement like this: "While every effort has been made to ensure accuracy, the presence or absence of a feature on this map does not imply the presence or absence of a feature on the ground" - I forget the exact wording, but it was something like that, usually in fairly small print!

Government Hydrographic Offices usually have some form of immunity, so you don't see such warnings on Admiralty or similar charts, except where there is a genuine reason to believe that the chart might be inaccurate (my favourite was at the Tail of the Bank in the Clyde, where there was a notice stating that adjacent surveys could not be reconciled!). However, it is worth looking at the compilation diagram, which details the sources of information used in various parts of the chart. I don't know about other nations, but the HO has an amazing QA procedure that probably uses more resources than the actual compilation, with several stages at which things must be signed off; we participated in this for Antarctic charts.

If you're being really careful - and I had to be on one particular product - I wrote a letter to the user explaining exactly what the strengths and weaknesses of the product were, and that they should never rely on it as their only source of navigation. That was for data provided for use in an aviation GPS, which we had to stress should be used for situational awareness and NOT as a reliable source of surface elevation data (though in many areas it probably was good enough to allow a landing you could walk away from, provided the aircraft altimeter was calibrated).

 

[DJE]

That's what I love about Vector charts! You don't need to know what the light characteristics of a particular lighthouse are when you are looking at a chart at 1inch to 200miles scale, but zoom in and all the detail is there

Well you do need the light characteristics if you want to check your position offshore by bearings from the major lighthouses. As shown above if you zoom out to a passage chart on Navionics one of the major lighthouses disappears. Not all of them, just one. It is inconsistent. And you don't get the light data by just zooming in you have to work down through a series of menus to find it. Even then it isn't presented in a consistent fashion - the description for St. Anthony Head light is "[ISO WR 15S HORN 30S] Red isophase light with a period of 15 seconds having red isophase light with a period of 15 seconds and a horn as fog signal. " The range is missing and the description ignores the white sectors!

 

[Gwylan]

It could be argued that any chart, electronic or paper, isn't fit for navigation not too long after publication unless regularly updated. The (now unused) charts we have for Irish Sea for instance are so outdated they don't show any of the wind farms.

Don't you keep your charts up dated with Notices to Mariners? Thought everyone did.

 

[pyrojames]

I use my binoculars for navigation. Should they come with a warning too!

 

[dunedin]

... navigation.

Has anyone got any idea about what other uses Navionics charts (webApp) may be put to?
This sort of makes me ROTFLMAO.
I realise they are probably covering their "A"s, but still... could their lawyers not come up with something more discreet and less hypocritical?

I agree, it is absolutely ridiculous, particularly for the versions used on chartplotters. We get charged huge prices for electronic charts, and plotters, but they are apparently “not to be used for Navigation”. As you say, what are they to be used for then?

And I am not sure that Scala is correct. I am not sure leisure boat users can buy any electronic charts which are approved for navigation (ie would be accepted as primary source for coded boats etc). Need to move to a commercial ship ECDIS, as far as I know.

It is one of the issues about the UKHO attempts to withdraw the paper Small Craft Folios, as these paper charts are currently necessary for carrying an “approved for navigation” chart.

 

[Sticky Fingers]

…..And I am not sure that Scala is correct. I am not sure leisure boat users can buy any electronic charts which are approved for navigation (ie would be accepted as primary source for coded boats etc). Need to move to a commercial ship ECDIS, as far as I know.
…

That’s exactly what I was getting at. Sorry I wasn’t clear.

 

[LittleSister]

The (now unused) charts we have for Irish Sea for instance are so outdated they don't show any of the wind farms.

If the charts were really 'up to date', they could show you what the current wind powering the wind farms was, and where the wind farm maintenance vessels were, too!

 

[Concerto]

There may be some defense for the comment "Not to be used for navigation". Electronic charts are great and are easy to keep updated BUT not all hazards are shown if you zoom out. Cannot remember the name of the round the world boat that ran aground on a reef, but if they had zoomed in on the chart they would have seen the reef. This problem SHOULD not occur, but most electronic charts do loose details like buoys and lighthouses, not to mention areas of shallow water, if you zoom out too far. I find this can be a problem if I have not entered a waypoint for something more than 5 miles away.

 

[Tzu]

I suspect its because its the web app version, for some reason? I see the same warning on my PC but not on my Ipad version

 

[Lucy52]

I suppose that the provider of electronic charts cannot be responsible for the way your electronic device displays them, adding an additional layer of uncertainty. The chart should display as intended, the provider may provide guidance for manufacturer of displays but they may not reproduced them exactly as intended. A "feature" of the display, hardware or firmware.