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Search took 0.00 seconds. Search: Posts Made By: RaymondR
Forum: Navigation 23-12-2022, 19:53
Replies: 59
Views: 5,521
Posted By RaymondR
Re: What confidence do you have in your charts?

One should be mindful that the degree of trust is impacted by the local sea states and weather conditions and bottom topography and that whilst one may venture into gradually shoaling waters with mud...
Forum: Navigation 23-12-2022, 14:48
Replies: 59
Views: 5,521
Posted By RaymondR
Re: What confidence do you have in your charts?

I doubt that I'll ever trust any chart enough to feel the need to adjust for continental drift.
Forum: Navigation 21-12-2022, 13:33
Replies: 59
Views: 5,521
Posted By RaymondR
Re: What confidence do you have in your charts?

The fact of the three decimal places in the boundary coupled with that of the UTM mapping of the entire continent and fairly extensive experience with government bureaucrats was sufficient to...
Forum: Navigation 20-12-2022, 18:02
Replies: 59
Views: 5,521
Posted By RaymondR
Re: What confidence do you have in your charts?

One does not want to confuse oneself if one happens to be one of those folks who indulges oneself in both land and marine navigation.

For example if one had been carrying out surveys on land using...
Forum: Navigation 19-12-2022, 16:55
Replies: 59
Views: 5,521
Posted By RaymondR
Re: What confidence do you have in your charts?

I was using it as an example of where the grid system of coordinates is used Ben.

And you never know, a knowledge of the various systems might come in handy some day.

The Great Barrier Reef...
Forum: Navigation 19-12-2022, 08:45
Replies: 59
Views: 5,521
Posted By RaymondR
Re: What confidence do you have in your charts?

You'll end up confused.

A graticule is how Cartesian coordinates are represented on a sphere.

A grid how they are on a flat plane. Land maps of relatively small areas, such as UTM system,...
Forum: Navigation 18-12-2022, 22:51
Replies: 59
Views: 5,521
Posted By RaymondR
Re: What confidence do you have in your charts?

With about 45,000 nm of coastal cruising around northern Australia under my keel I've found the 800 series paper charts very reliable. However there were a couple of times with older charts in the...
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