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Search took 0.00 seconds. Search: Posts Made By: Andrew Troup
Forum: Navigation 06-11-2012, 20:36
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

I don't quite agree that GPS is just another navigational tool.

Other tools are, in varying degrees, tools a human uses to navigate with.

With a GPS, it's not the human doing the navigating,...
Forum: Navigation 05-11-2012, 00:29
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Dan

By "wind leeway" I wonder if you mean what I would call "wind drift". This behaves like current set, but arises from a different cause: the movement of the surface layer of water downwind.
...
Forum: Navigation 05-11-2012, 00:03
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

This is a straw man argument, I think. I don't know any old school navigator who would for a moment consider using DR in a tight channel.

In close quarters combat, the methods switch to pilotage....
Forum: Navigation 04-11-2012, 14:28
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Perhaps someone should make a special GPS for people like me. One with no display, just a personality chip and a voice synthesizer.

"Near enough, champ"

"Try again, grasshopper"

"Woop Woop...
Forum: Navigation 04-11-2012, 14:24
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Because I'm a lazy, flawed, human being. If the GPS is easily invoked, why would I be doing all this work?

It's a test of character which I routinely fail. I'm not sure I'm alone in this....

In...
Forum: Navigation 04-11-2012, 14:16
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

That's not fair. :(

So few words, so much meaning!



Double not fair. You've clearly forgotten more about man management than I will ever know. Kudos ! :flowers:

If you're thinking of...
Forum: Navigation 04-11-2012, 13:48
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

The most gifted navigator I've ever met (and I've been lucky enough to sail with a couple of the most famous) was a relatively unknown guy - at least in the Anglosphere - called Jérôme Poncet.
...
Forum: Navigation 04-11-2012, 13:35
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

When you say "set", I'm guessing that's your word for what I call "leeway"?

(To me, "set" is an influence on the boat's progress which is of external origin, specifically from a current)

I...
Forum: Navigation 04-11-2012, 02:26
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

n77: Thanks for taking the time to understand what I was asking, and your answer is encouraging.

Is this true for most standalone chartplotters? (I've only used systems running on a laptop, and...
Forum: Navigation 03-11-2012, 23:32
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Well, yes, that's the point of my question. How much can I draw, at my discretion, and how easily?

If I'm using a paper chart, and I read in the logbook, after a rough night watch, that crewman...
Forum: Navigation 03-11-2012, 20:07
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Wolfenzee

thanks for that, I should have been clearer. I was talking about using a chartplotter (rather than a paper chart) to plot bearings and courses originating from human input, not from...
Forum: Navigation 03-11-2012, 18:56
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Question:

Does any chartplotting software make provision for assigning varying degrees of uncertainty to various inputs?

Say, the difference between bearings taken in rough conditions with a...
Forum: Navigation 02-11-2012, 14:21
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Nicely put.
Forum: Navigation 30-10-2012, 17:31
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

The thing I like about a digital stopwatch (if it's the right sort) is that it has a memory which allows you to reliably capture the time for each a series of sights, taken opportunistically at the...
Forum: Navigation 30-10-2012, 15:53
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

I have cut narrow strips of cling-film to 'tape' my digital stopwatch to the handle. I agree it makes it harder to hang onto though-- The cling-film makes it easy to remove when this is a problem,...
Forum: Navigation 30-10-2012, 15:51
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

There are those who will say "Yes, but look how much skill and knowledge that would take"

Which has me muttering, under my breath, "Not half as much skill and knowledge as it would take to repair...
Forum: Navigation 19-10-2012, 21:18
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

The topography of the land is also crucial information for pilotage, surely?

Even with paper charts showing topology:
because GPS tells us where we are, we risk losing the ability in infer our...
Forum: Navigation 08-10-2012, 21:31
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

Talk about a thread derailment.

It makes me vicariously embarassed just looking back and finding how this originated.
Forum: Navigation 27-08-2012, 03:08
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

I haven't struggled through the entire thread, so what I'm about to raise may have been mentioned. In case it hasn't:

One good thing about paper charts is that the technology is unchanging.
...
Forum: Navigation 24-08-2012, 18:02
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper Charts Now Unnecessary

The most interesting case of doing away with paper charts I'm aware of was on the Air New Zealand flights down to Antarctica.

The pilots had briefings, with slideshows (like a Powerpoint...
Forum: Navigation 08-07-2012, 02:29
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper charts now unnessary

To address the specific question in the OP

I agree that paper charts are essentially optional in the general case.

I personally don't begrudge the extra time it takes to navigate on paper,...
Forum: Navigation 08-07-2012, 02:15
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper charts now unnessary

One of my reservations about the rise of electronic charts is the revenue stream drying up, simply because relatively few people buy them.

At first this is not a problem, because the information...
Forum: Navigation 07-07-2012, 23:25
Replies: 1,005
Views: 97,949
Posted By Andrew Troup
Re: Paper charts now unnessary

Some good points have been raised but it seems to me the thread is tipping over into a phase that nothing good will come from.

Started with a few dismissive posts, now we're into exaggeration and...
Showing results 1 to 23 of 23

 
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