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Search took 0.00 seconds. Search: Posts Made By: Ex-Calif
Forum: Navigation 05-11-2012, 03:23
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Andrew Leeway or winddrift - meh! The boat...

Andrew Leeway or winddrift - meh!

The boat slips sideways and drifts downwind. I think you want to put a finer point on it and we may have different terminology.

Raku - Using a hand bearing...
Forum: Navigation 04-11-2012, 22:31
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Gotta be careful here... The one boat...

Gotta be careful here...

The one boat induced an error with a bad fix. you cant hang that o the gps.

The guy that was using DR was more likelynusing visual navigation. DR would indicate to me...
Forum: Navigation 04-11-2012, 11:45
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
I think I finally get Andrews point - If I...

I think I finally get Andrews point - If I "always sail the GPS" and every time I record a fix, I have no idea what components of CMG are accurate helming, drift and set.

So I manually plot a...
Forum: Navigation 04-11-2012, 01:10
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
If plotter is failed all that makes sense. ...

If plotter is failed all that makes sense.

if plotter is not failed you know exactly where you are at the start of every watch.

And my nav program (navionics) has a projection line extending...
Forum: Navigation 03-11-2012, 22:14
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
I don't disagree but how is this used in...

I don't disagree but how is this used in navigation?

If I am reading right there is a question that says basically, I am here, in the future I will be in this cirlce of error based on wind, waves,...
Forum: Navigation 03-11-2012, 21:51
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Not sure what you mean by no computer can figure...

Not sure what you mean by no computer can figure out the effectis of wind? If the data can be collected the computer can calculate it. Faster and with higher accuracy than a human.
Forum: Navigation 30-10-2012, 16:38
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

No doubt celestial navigation is a skill. But likewise properly using a gps and or chartplotter is also a skill.

Driving into rocks and other boats while using a chartplotter is rarely a failure...
Forum: Navigation 14-10-2012, 18:28
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

CelestialSailor - Downunder's repost of this reminded me about this statement and I was wondering where the copy paste came from.

I am not sure if this statement is true.

The lines of lat and...
Forum: Navigation 14-10-2012, 17:09
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

Amen to that.

Here's a taster of an RYA course that might be a good primer. I am not 100% thrilled with it as the navigation section is short and it mixes in other skills (necessary skills)...
Forum: Navigation 13-10-2012, 21:24
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

Where?

Which way?
Forum: Navigation 13-10-2012, 20:37
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

I know and recognize your skills - that's why I guessed incomplete thought.

It's the internet and we are all a bit anal... :whistling:
Forum: Navigation 13-10-2012, 20:35
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

Oh, no...

GPS shows many things - You may be confusing COG with bearing.

COG is the actual direction the boat is moving - even if backwards.

Bearing is the angle to a waypoint or fix or...
Forum: Navigation 13-10-2012, 20:28
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

I am guessing this was an incomplete thought?

Compasses don't have variation - in the sense of navigation.

Variation - The difference between true north and magnetic north caused by the...
Forum: Navigation 08-10-2012, 16:31
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

I am going to guess that he didn't "throw a rod." Throwing a rod is when the rod cap comes undone from the crankshaft journal. This is extremely rare. It can happen by the nuts backing off (almost...
Forum: Navigation 01-09-2012, 18:27
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

The other side of this is how many times is there "weather" that precludes a star shot for multiple days?

I have a great article I wish was electronic. It talks about the crew almost mutinying...
Forum: Navigation 25-08-2012, 18:05
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

Great idea Dave - Unfortunately being CF nailing stuff down is like pushing rope...

However let's try one.

Position is a latitude and longitude coordinate. Position is derived from Celestial...
Forum: Navigation 21-08-2012, 16:30
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

We get over to Sebana Cove in Malaysia a couple of times a year. It is a cruiser friendly spot and they used to do a friday BBQ for the yachties.

It seems to me the topics of discussion include
...
Forum: Navigation 21-08-2012, 15:27
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

Bill I agree with your list - don't know if it is in priority order but I would put the paper charts on before the gps...

I have lost track of the score but I can't see arguing against paper...
Forum: Navigation 20-08-2012, 21:56
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

You interpret a questioning of outright misinformation on your part as a personal attack.

It is not a personal attack when someone is called out for saying this statement:



If you are going...
Forum: Navigation 20-08-2012, 16:59
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

You don't know anything about me - I don't know why you have to be so nasty to everyone who disagrees with you.

I have no need to send you my sailing resume. I've been around a while.

Take a...
Forum: Navigation 20-08-2012, 16:22
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

Raku - Not picking on you but this is like taking a high school English test.

Sextant is to gps as
electronic chart is to paper chart

Sextant is to electronic chart as
elephant is to apple
...
Forum: Navigation 15-08-2012, 20:08
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
Re: Paper Charts Now Unnecessary

This is really the crux of the whole debate for me.

There are those that will point out that lightning strike, multiple equipment failure and the government turning off the system as a...
Forum: Navigation 18-07-2012, 04:26
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
<But useless if you cant, Think about aircraft 20...

<But useless if you cant, Think about aircraft 20 years ago on a moonless night, they couldn't see a thing yet with Dead Reckoning, Paper charts and instruments they navigated there way through...
Forum: Navigation 18-07-2012, 04:15
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
The answer here is get a smart phone...

The answer here is get a smart phone...
Forum: Navigation 15-07-2012, 19:34
Replies: 1,005
Views: 97,986
Posted By Ex-Calif
There is a great old timer sailor in our place. ...

There is a great old timer sailor in our place. He has a large old schooner that he sails and he spins a great yarn.

He piblishes these in our club rag. The latest installment talks about an...
Showing results 1 to 25 of 25

 
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