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What is the latest wisdom on tablet gps?


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That depends. For what? - local day sails, or around the world? IMO tablets are better as backups or repeaters than as a primary nav system. Most have limited batteries, poor sunlight visibility,

I agree with Island Time 100 %. I ran OpenCPN on a tablet as a primary for a short time but relegated it to back up system fairly quickly.. It did however run opencpn well and was accurate with only a

I have back ups.  3 chatt plotters on my phone.  Crew have chart plotters on their phones. Laptop with a dongle. The old gps with paper charts plus i still have my sextant. 

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I’ve got two multifunctional displays, one in cockpit one down below, all integrated with AIS, digital radar.

However we have two iPad on board with Navionics plus on phones and 90% of the time we use the iPad

Found that actually more accurate going through passes into pacific lagoons etc, but for coastal cruising I’d say a well setup tablet is a good starting point, then add more as you get more adventurous 

The chart plotter comes into its own when we need ais and Radar to double check eyes and IPad 

But it all comes down to your personality, if your into computers and gadgets then go that way, if your going to have to learn a new language so to speak then “KISS”

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Andy Schell of 59-North covered his nav' set up on one of his podcasts..

https://www.59-north.com/thinksailing  , search the page for iPad Navigation if the link below doesn't work.

He's done a fair bit of mileage with his iPad solution.

<iframe style="border: none" src="//html5-player.libsyn.com/embed/episode/id/6284928/height/90/theme/custom/thumbnail/yes/direction/backward/render-playlist/no/custom-color/000000/" height="90" width="100%" scrolling="no"  allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe>



 

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29 minutes ago, Jon said:

I’ve got two multifunctional displays, one in cockpit one down below, all integrated with AIS, digital radar.

However we have two iPad on board with Navionics plus on phones and 90% of the time we use the iPad

Found that actually more accurate going through passes into pacific lagoons etc, but for coastal cruising I’d say a well setup tablet is a good starting point, then add more as you get more adventurous 

The chart plotter comes into its own when we need ais and Radar to double check eyes and IPad 

But it all comes down to your personality, if your into computers and gadgets then go that way, if your going to have to learn a new language so to speak then “KISS”

And budget.

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And individual preference.

Saying so and so did it with a Phone/Full ECDIS/MFD/Tablet, traditional coastal Nav, or a sextant is irrelevant. All can be done, and have been done. It depends on the level of risk anyone is prepared to accept. Every year, boats (and ships) are lost due to navigational mistakes, regardless of systems being used. 

If the operators were using proper procedures, and three separate sources of data,  giving redundancy and cross checks, they would not be. Humans are fallible. 

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There are more "accidental" events caused by modern methods of navigation than ever before, insufficient training, understanding, and reliance on a screen rather than No. 1 eyeball the main reasons. Just look at the US Navy if in doubt, or maybe the Rena. There was a time back in the day when you stood off, hove to, or tacked out to sea if / when in doubt of your position. Between auto pilots and electronic navigation etc. we are actually no longer in charge.

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Thanks all.  I'm very aware that system redundancy is an important consideration - more baskets for the eggs.  We have a small handheld marine GPS, compass, paper charts etc (no sextant!).  I'm looking for a system that gives more or quicker or richer info with less risk of calculation errors.

I've been looking at Openplotter on a Pi device as an option - it looks interesting with lots of implimentation options you can grow into.  

To Island Time and Steve's point, many aircraft (and sea-craft) have been lost because pilots thought they knew better than the computer guidance or control systems.  Conversely, the 737 Maxx situation shows we need to be wary of systems so complex we don't know what they are doing.  Software and hardware is usually reliable, its the dampware operating it that is in doubt!

Cheers

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13 hours ago, Deep Purple said:

Wet Racing, I always have this in my pocket. Loaded marine chart, with all my waypoints and marks set up. Impossible to kill and 2 AA's keeps it running all day

 

Screen Shot 2020-05-18 at 10.14.55 PM.png

Can't beat the etrex, indestructible and I always have mine as a backup.

The only issue I had was that as I aged and my eyes slowly wore out I had to keep getting longer and longer lanyards for it :-)  

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