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Search took 0.00 seconds. Search: Posts Made By: colemj
Forum: Marine Electronics 17-01-2015, 05:47
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Where did I question your knowledge of AIS? You asked if it had been reported that the boats had AIS, and I answered yes it had, and that it is part of the standard boat equipment for them. Who is...
Forum: Marine Electronics 16-01-2015, 14:29
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Sorry, I didn't realize you were in control of this thread.

I am unsure why I need to "concede" anything when I am not convinced otherwise, and can provide rational arguments to support my case....
Forum: Marine Electronics 16-01-2015, 14:15
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Yes, it is part of the standard equipment of all the boats in the race.

This isn't a screenshot from them - I am just using it to illustrate my point about the courses of all the boats.

Mark
Forum: Marine Electronics 16-01-2015, 06:14
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Let me introduce myself - I used to bury my nose in fresh Xerox copies and inhale deeply. Oh man. Don't get me started on mimeographs…

Laser printing ruined it all.

Mark
Forum: Marine Electronics 16-01-2015, 06:11
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

You aren't suggesting that people take all of that navigational training for recreational sailing, are you? Just how much navigational training do you think most people had before chart plotters? I...
Forum: Marine Electronics 16-01-2015, 06:04
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

I have my own personal, non-factual and unsupported, belief on what happened.

This boat was way behind in this race and was getting a favorable wind shift (this is recorded and supported in their...
Forum: Marine Electronics 16-01-2015, 05:55
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Here is what we do know about the Vestas electronics:

1. The base electronic vector chart of that area shows the reef as a blue blob surrounded for hundreds of miles of white clear ocean. This is...
Forum: Marine Electronics 16-01-2015, 05:35
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Here is where I both agree and disagree. Yes, the process of using a CP may allow some to make mistakes.

However, mistakes have been made by thousands without the use of a CP. Mistakes have...
Forum: Marine Electronics 16-01-2015, 05:25
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

I think you missed my point. IF he plotted his noon-noon site on a paper chart, he would have found what you point out.

However, IF he had done any one of the five other basic things I mentioned,...
Forum: Marine Electronics 15-01-2015, 16:20
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

I have the feeling you think some of us are sitting with our heads buried in electronics and running around tending to all the alarms, etc?

Rest assured, the electronics are simply for...
Forum: Marine Electronics 15-01-2015, 14:56
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

See, this is where things get defined so they fit one's world view.

Let me try:

IF they had performed the most rudimentary preplanning of their route,

or IF they had heeded the zoomed out...
Forum: Marine Electronics 15-01-2015, 14:41
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Now if you substitute "electronic raster chart" for "paper chart" in the above, it doesn't change the meaning any.

I think your argument is about raster vs. vector format and not paper vs....
Forum: Marine Electronics 15-01-2015, 05:32
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Do you mean paper charts, or raster charts?

At its heart, Jon's argument is really about raster vs vector, and possibly the display size, than about electronic vs paper (those raster charts are...
Forum: Marine Electronics 14-01-2015, 16:37
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

OK, I think you went off the rails here Jon. I realize you don't have much experience with electronic charting, and prefer to think that people who do use them to full extent, as well as be able to...
Forum: Marine Electronics 14-01-2015, 13:52
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

It will be interesting to see how this all develops. No doubt major Hydrographic Services will retain POD for now, and maybe into the future. But who is going to draw new raster charts, and not...
Forum: Marine Electronics 14-01-2015, 07:51
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

I do this all the time with my iPad (in a waterproof case). I also use it in poorly charted areas that we anchor in to go around in the dinghy and mark up uncharted/inaccurate reefs, unmarked safe...
Forum: Marine Electronics 14-01-2015, 06:57
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Seems like that opens up an entirely different can of worms. Intellectual property and all that, you know.

Not to mention, if people think others get into problems now simply using chartplotters...
Forum: Marine Electronics 14-01-2015, 05:59
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Well, then you have circled us right back around on this topic. When paper charts are no longer even available (as is actually happening now in some areas), how will people be drawing in pencil...
Forum: Marine Electronics 14-01-2015, 05:21
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

That is a type of electronic plotter, Jon. I actually find the radar view like you have preferable to ships plotted on an electronic chart in open water (I prefer them plotted on a chart when they...
Forum: Marine Electronics 13-01-2015, 14:37
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

You just have not been able to grasp the definition of a strawman argument, have you? The above is yet again a perfect example - you have distorted my position (and actual words) to make yours seem...
Forum: Marine Electronics 13-01-2015, 13:56
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Since you are asking now, my answer is chartplotters do not get it wrong - people get it wrong, and chartplotters do not cause the problem.

Now let me ask you a question: "Another foundering - how...
Forum: Marine Electronics 13-01-2015, 13:51
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Here you go:



Mark
Forum: Marine Electronics 13-01-2015, 13:47
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Actually, I don't think you ever asked this question. It is the title of the thread, but you made the assumption that the boat was using a chart plotter and it caused them to come to grief. You...
Forum: Marine Electronics 13-01-2015, 06:23
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

What? I have called certain of your arguments "strawman". It doesn't make any sense calling a person a strawman.

Everything I have addressed has been your arguments. I have even used those...
Forum: Marine Electronics 13-01-2015, 05:51
Replies: 357
Views: 36,649
Posted By colemj
Re: Another foundering how do chart plotters get it wrong

Please show me where I called you names (BTW, that post you quoted wasn't even responding to you). Pointing out logical fallacies in arguments is not calling names.

As for advocating using all...
Showing results 1 to 25 of 59
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