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  #1  
Old 08-04-2010
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Anchor alarm for android phones - Anchor Alert

Before I buy it, is anyone out there using Anchor Alert?

Here's the link to a web page describing it:

Anchor Alert. Anchor Alert is an advanced anchor alarm for Android. ...
Anchor Alert v1.1 Application for Android | Tools





Regards,
Brad

not associated with the software company in any way
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Last edited by Bene505; 08-04-2010 at 10:20 AM.
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seems awfully expensive for a single, very limited use, application.
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How come Garmin or Raymarine hasn't figured out something like this?

Do these phones and Ipads use GPS and can these apps work without the cell access?
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Quote:
Originally Posted by remetau View Post
How come Garmin or Raymarine hasn't figured out something like this?

Do these phones and Ipads use GPS and can these apps work without the cell access?
Uh...I think they have! My Garmin handheld and my Raymarine plotter both have anchor alarms and tracks to show my path.
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Quote:
Originally Posted by night0wl View Post
Uh...I think they have! My Garmin handheld and my Raymarine plotter both have anchor alarms and tracks to show my path.
Can you point your handheld towards your anchor and put in how many feet off your bow it is so that it can figure your drag from your anchor and not the unit?
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Originally Posted by remetau View Post
Can you point your handheld towards your anchor and put in how many feet off your bow it is so that it can figure your drag from your anchor and not the unit?

You start the alarm from when you drop the anchor and catch...

But my handheld gps floats and runs off of double a's in a pinch...like to see the Droid do that
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I guess I can see how that would work, but it seems hokey in comparison, and I usually don't have time to set the anchor drag alarm while actually dropping the anchor.

It just seems to me that these cell phones and apps are getting much more powerful than the dedicated GPS units. Have you seen the iNavX app? This is pretty much a full GPS unit that can even interface with AIS and instruments wirelessly.

Grant it that the GPS hardware is much more robust, but if Apple or some of these big phone designers ever decide to get into the waterproof market, then I think we'll see the end of Garmin and Raymarine.
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Most major chartplotter brands, including some of the handhelds, have anchor alarms of some sort.
Quote:
Originally Posted by remetau View Post
How come Garmin or Raymarine hasn't figured out something like this?
Many of the newer phones and the iPad 3G models have an actual integrated GPS chipset and do not require cellular network access to work. My cellphone, an Android based unit, has one as well.
Quote:
Do these phones and Ipads use GPS and can these apps work without the cell access?
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Quote:
Originally Posted by sailingdog View Post
Most major chartplotter brands, including some of the handhelds, have anchor alarms of some sort.
Yes they do, but they don't work quite well unless you do what was mentioned earlier: set the alarm when you are over the anchor. If you are in a tight anchorage and you let out 100' of rode. You are then 100' from your anchor when you set the alarm. Seems like a cool and simple function to me to be able to enter the location of your anchor.

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Originally Posted by sailingdog View Post
Many of the newer phones and the iPad 3G models have an actual integrated GPS chipset and do not require cellular network access to work. My cellphone, an Android based unit, has one as well.
Thanks. Of course without an external GPS antenna, I don't see how the phone app would function at night for an anchor drag alarm.

Sorry to the OP. I was going to post this in another thread that I saw for that was phone vs chartplotter. Your posting made me think of it again and got my mind going.
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No problem on the posting in this thread.

One other nice thing about this app is that you can take into account the length of your boat. Our anchor roller is 40 feet from the helm. If I had a Raymarine unit, I'd have 40 feet of error build in, even if I setup the anchor alarm while anchoring. (Granted, I usually lower the anchor while backing up, but trying to time that is the last thing on my mind.)

The length-of-boat may not seem like a big issue, but the other day I was in a tight little channel and simultaneously watching the markers on the Driod's gps. I was not past a marker (according to the gps) and yet the marker was right off my starboard, midships, about 10 feet from the boat. It was about time to start the turn. So yes, it does matter where your gps unit (or antenna) is on your boat and you do need to take it into account. The gps units are that accurate it seems.

Regards,
Brad
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