[Public-List] iPhone AIS receiver

[Meinhold, Michael J.]

Although I firmly agree with John and  Larry's Amen, I have a little
story from the Queenstown race that says something for GPS.

I was singlehanding home from Queenstown yesterday. We had to tack down
the Chester until we could round the red nun at Love Point.
I had some sail repair issues, and had to switch jibs mid race, so
suffice it to say I was way behind.   My little handheld GPS was not
functioning, but I thought I knew where I was and where I was going. As
I finally got within about 1.5 miles of the turn, I spotted the red nun,
and I concentrated on my tell tales, occasionally coming up to the high
side. The wind was variable, and it seemed every time I looked at the
mark it was abeam, and I just had to keep  steady on the wind to get to
the layline.  This went on for almost 45 minutes - I thought maybe the
current was the problem, but I was moving on the land - I just could not
reach that layline.  I finally got out binoculars and it turned out I
was trying to make a sailboat with a bright red sail on the other side
of the bay!

Mike
Rinn Duin #272
-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Lawrence
Morris
Sent: Monday, September 24, 2012 10:47 AM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] iPhone AIS receiver

Amen brother!

Sent from my iPhone

Larry Morris

On Sep 24, 2012, at 9:42 AM, John Riley <jriley at dsbscience.com> wrote:

> I played around with that app a while back, and there is simply no way

> it is displaying all vessels within a given region.  I looked at the 
> Chesapeake, areas like Savannah Approach and around New Orleans, and a

> few other busy ports.
> 
> Sometimes, there was only one or two vessels shown.
> 
> Either the app does not get all AIS equipped vessels or there are very

> few AIS equipped vessels.  Either way, I'll stick to the Mark I 
> Eyeball...which has the added advantage of not requiring cell
signal...
> 
> Apologies if I sound like a technophobic curmudgeon again, but the 
> thing I really hate about all these "modern tools" (gps, 
> chartplotters, etc) is that they pull the focus into the boat.  The 
> dangers lie outside and around me...THAT's where I want to be looking.
> 
> Yes, I've been aboard a power vessel going 30 knots where the skipper 
> at the helm was looking DOWN at the dot on the chart plotter while 
> piloting his vessel in a narrow channel and with other boats nearby.  
> Speed was a problem, but so was focus of attention to a screen at the 
> helm station rather than out, as "Proper Lookout" demands.
> 
> --John
> 
> 
> 
> Michael Grosh wrote:
>> Android users can use MarineTraffic.com. I use it all the time, and I

>> am on a boat with full featured AIS, chart plotter overlay, etc.(AIS 
>> is VHF line of sight, the smart phone app uses shore stations for 
>> unlimited range-theoretically).
>> Costs nothing.
>> 
>> MichaelGrosh
>> #220
>> On Sep 23, 2012 7:46 PM, "Greenhouse, Matthew A. (GSFC-6650)" < 
>> matthew.a.greenhouse at nasa.gov> wrote:
>> 
>> 
> 
> --
> John S. Riley
> S/V Gaelic Sea
> 1972 Alberg 30 #521
> 
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