What 'marine' app do you use on your ipad?

Navionics
MeteoEarth
GarminGold
MarineTraffic
SeaTow (for the weather feature)

Will any of the apps work on an IPad one, the original version ?

I know there is no G3 chip, but I have a wifi adapter.

Hmm, I have been curious about that: Got an iPad 5 and thought it had built in GPS and able to "navigate". So far with mixed results: Downloaded the Garmin Bluecharts recently and tried the iPad on a boat in the local area and it worked fine.
Last year we flew to France, borrowed an RV and planned on using the iPad to navigate the French country side. Had downloaded lots of charts and maps before we left and thought I was going to have a "moving map" setup with a default to the built in iPad maps. Not so, no good and not sure what the problem was. Fortunately the RV came with a great GPS/Map gizmo, a life-saver in the French country side and in Paris during rush-hour and it could tell you in 5 languages that you made the wrong turn.

Should have done my homework, my iPad only has WiFi reception, no cell network, thought maybe that was the problem, but the Garmin Nautical charts worked the other day.

Got a couple of Tide Apps on the iPad, but they need to be told the nearest location, for some reason they won't look to the GPS for "nearest" tide station.

Uh, you are talking the 1,2,3 and 4 now right.....?

Plus a basic data plan is only $30 or so. Of course we don't use that word "iPad" in our home or any of those "i" words. lol

Not saying anything that hasn't been said above but attempting to clarify.

GPS is separate from any data. Now that said you do need a GPS receiver in your iPad so that does require you purchasing the iPad cellular version as Pascal says above. It does not require you activating a data plan.

Back to the OP's situation, I believe he indicated his iPad is a Wifi only model. So, no GPS receiver. It would then require some type of external GPS receiver.

Advice to all, if you're going to purchase an iPad, get one with cellular capabilities even if you never intend on using them. If you want a cheap tablet without any extra functions, then just buy any of the thousands of available Wifi only tablets for as low as $100.

I use a Bluetooth GPS and works really well. Also has enough range to have the iPad in the saloon with full gps.

http://www.amazon.com/Dual-Electron...&qid=1420605126&sr=8-1&keywords=Bluetooth+GPS

Hmm, not so sure about that: I got a non-cellular iPad, and can still use it for navigation with the Garmin app and charts.

A lot of the new electronics also have WiFi adapters so you can use your iPad as another screen. I do this with my Simrad suite of electronics. The adapter was $50 and my iPad has nearly every function of the NSS12 screen units that cost way more. It's great in the cockpit or next to my bed at night to have an anchor alarm that I can acrually hear. I sleep much better now

Garmin BlueCharts Moble is *excellent*. Just wish it had an anchor alarm integrated.

Also, FWIW I use Garmin BlueCharts on my Wi-Fi only iPad using a Bad Elf Bluetooth GPS antennae. Very accurate.