I like to have triple redundancy on my bluewater trips. First is the chartplotter
, second is my Ipad with iNavX
with Theyr Weather
and Tides and 4d Weather
, and the third are paper charts.
The iPad can be purchased but it must be an Ipad2 with GSM. I just bought another one on ebay used, with 32gb at $220. The iNavx
cost $39 and then I purchased one of the extensive map databases. As well, I would recommend a cigarette style extension cord around 10 feet to enable you to use it at the helm
non-stop (the connection will not be waterproof but you can rig some big zip lock bags to stop all but a dump of water
from stopping the unit) Last, I purchased a Life proof Nuud case. This is completely waterproof and I can attest that it works as I have had that unit on deck
and it was entirely under water
a number of times.
The GSM is the Ipad that says Verizon or ATT . You dont need a contract
, only the unit as then you will be able to see your location in the middle of nowhere.
Now for the disadvantage - 1) when the screen
gets wet, to tap on a screen does not always go as planned 2) in a bouncing boat, trying to create a waypoint or other fine insertion using the screen is difficult 3) unless you have a good stand and mount for the ipad (a suction mount does not work in heavy seas) then your Ipad will be seen skipping across the deck
a time or two.
As far as navigation goes, the main disadvantage is lack of connection to the autopilot
. Yes, there are ways to make this happen, but in practicality at this time no. The advantage is that the navigation is as good as the software
data. I have, when the chartplotter
failed, used my Ipad to bring us into very difficult channels at night with success just using the iPad.