This is going to be controversial with some of you and ditto'd by the rest: Do not expect a tablet computer to be a reliable "system" for chartplotting, radar, or any other mission-critical, must work when needed item. It will not work when needed. Too many weak links. Physically weak. Prone to software, compatibility, and connectivity issues, especially GPS
for some reason. If you insist with going with a tablet (or a PC for that matter), use it only for navigation
and boat stuff. No games, phone
calls, etc. Been there done that.
Go with a reliable name-brand radar/chartplotter that has NMEA 2000
(NMEA 0183 gives you some options for some older equipment
but is rapidly going the way of dinosaurs but is way cheaper for cabling). Hardwire it to the boat.
Get a good autopilot
if going for more than one day at a time or if double or single
AIS is not required but I would like to have it. I consider radar a must, even for local trips here in the Pacific Northwest
. I can use paper charts
, and have, but it would scare the dickens out of me in fog
or night if I had to do it routinely.
Have a backup GPS
system (not just antenna) that does waypoints and routes and know how to use it. Can be handheld or fixed. Personally I would want to be able to have it at the helm
when needed. You will need it at some point, especially if you go with a tablet. But then you need charts
to do waypoints and routes when your tablet dies. Been there done that.
Forward scanning sonar might be a nice-to-have item but it will be expensive and troublesome and give you a false sense of security
. I personally would not want to have to use it to get in to somewhere, although there have been times it would have been useful if I had had it.
Can't really imagine getting the stuff you want in your list for $10k.
And, better know what you are doing to install all that and integrate it. Integration between manufacturers and even between one manufacturer's devices can be difficult and sometimes impossible. Been there done that. Regardless of what the literature, sales reps, your good sailing buddies, and the honorable free advice givers on this and other boards. But I would trust this board most of all.