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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Cellphone Nav?
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Thread: Cellphone Nav? Reply to Thread
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Topic Review (Newest First)
03-16-2013 06:15 PM
Minnewaska
Re: Cellphone Nav?

Quote:
Originally Posted by TakeFive View Post
There is an easy way to determine whether your GPS capable cell phone would work as a GPS when out of reach of cell towers. Just put it into "airplane mode," then manually turn on the GPS functionality. ....
In principal, I get what you're saying. However, I don't think the iPhone has a separate gps switch, just a wifi and bluetooth. If you sent set it to Airplane Mode, the gps is shut off.
03-16-2013 06:05 PM
TakeFive
Re: Cellphone Nav?

There is an easy way to determine whether your GPS capable cell phone would work as a GPS when out of reach of cell towers. Just put it into "airplane mode," then manually turn on the GPS functionality. Test it with a freestanding chart plotter program (like Marine Navigator Lite on Android) and see if it gets a fix.

Do not do this test with Google Maps, because it has to download its maps over the internet. Some chart plotter programs also requires internet connectivity to download the charts in real time, while others will cache the charts. Some, like NutiCharts, will cache the charts with the paid version, but not with the free version.

Marine Navigator caches the charts with both the paid and free versions.
03-16-2013 05:47 PM
Minnewaska
Re: Cellphone Nav?

Quote:
Originally Posted by jackdale View Post
..BTW - I also use a lead line to measure the depth under my rudder when anchored stern-to shore.
Quote:
Originally Posted by Faster View Post
OK Jack.... Maybe you should spend $100 on a handheld depthsounder for that..
Funny, I did the same at a mooring field this past season. I have to take an outside mooring to clear our 6.5ft draft. I look at the depth sounder after the tide goes out and it reads 6ft!! I think we're still swinging? I drop a line and find about 7ft, which makes sense. The sounder must have been distorted by the notorious thick grass at this anchorage.
03-16-2013 03:09 PM
Faster
Re: Cellphone Nav?

Quote:
Originally Posted by jackdale View Post

BTW - I also use a lead line to measure the depth under my rudder when anchored stern-to shore.
OK Jack.... Maybe you should spend $100 on a handheld depthsounder for that..
03-16-2013 02:51 PM
RichH
Re: Cellphone Nav?

Quote:
Originally Posted by jackdale View Post
Using the Mark I eyeball as a navigation tool seems to be becoming a lost art.
And it doesnt 'go down' when youre struck by lightning and all your gizmos get 'fried'. Been there, got the Tee shirt. :^))))
03-16-2013 02:36 PM
jackdale
Re: Cellphone Nav?

Quote:
Originally Posted by Minnewaska View Post
True enough, but hasn't an island in the Pacific just been added, or was it removed, from some printed charts? To err is human and I haven't seen a divine chart in any form.
I agree.

The charted island proved not to be there.

The CHS had a to add a rock to an anchorage after several boats clipped it.

Most of what I see on electronic charts are mislabeled nav aids.

BTW - I also use a lead line to measure the depth under my rudder when anchored stern-to shore.
03-16-2013 02:35 PM
GMFL
Re: Cellphone Nav?

Quote:
Originally Posted by jackdale View Post
Yes


Clearly I am not a Luddite as I am using the Internet to respond to this thread.
Didn't call you any names or label you, Just don't think the first nav aid I'd rely on would be a paper chart. As a back up, sure, I have all the latest (well as of last summer anyway). As I've said, the electronic charts I've used have been extremely accurate for my area. They would be the first to consult for me and I would think for many others as well.

As I said, each to their own.
03-16-2013 02:29 PM
Minnewaska
Re: Cellphone Nav?

Quote:
Originally Posted by jackdale View Post
.....I have also seen some interesting errors on electronic charts.....
True enough, but hasn't an island in the Pacific just been added, or was it removed, from some printed charts? To err is human and I haven't seen a divine chart in any form.
03-16-2013 02:25 PM
jackdale
Re: Cellphone Nav?

Quote:
Originally Posted by Faster View Post
We've been in and out of Silva Bay a hundred times... It is a bit of a tricky area. I still break out the paper after monitoring the crossing on the plotter.
Using the Mark I eyeball as a navigation tool seems to be becoming a lost art.
03-16-2013 02:22 PM
Faster
Re: Cellphone Nav?

We've been in and out of Silva Bay a hundred times... It is a bit of a tricky area. I still break out the paper after monitoring the crossing on the plotter.
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