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Old 25 September 2010, 12:22   #1
martini's Avatar
Country: UK - Channel Islands
Town: jersey
Boat name: Martini II
Make: Arctic 28/FC470
Length: 8m +
Engine: twin 225Opti/50hp 2t
MMSI: 235067688
Join Date: Jun 2005
Posts: 3,018
Garmin GPSMAP78 & 78s differences

Can anyone tell me what the differences are between the Garmin GPSMAP78 and the 78s handheld units? I'm not seeing any obvious difference in the specs on the Garmin website, only difference seems to be in the price!

Has anyone here got either unit? Any good?


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Old 25 September 2010, 14:00   #2
Avocet's Avatar
Country: UK - England
Town: Poole
Boat name: Grimalkin
Make: Ribcraft 750 Sport
Length: 7m +
Engine: Suzi 250
MMSI: 235050647
Join Date: Oct 2007
Posts: 885
I've got the 76CSX as an AA battery powered back up for our fixed Garmin chartplotter (of which the screen is currently u/s!). It's a very cleaver and adaptable bit of kit, if a bit heavy on the batteries that it uses. It also uses a micro SD card which (with the right Garmin software) is compatible with current Garmin chartplotters but is a long way away from the Garmin compatible only chip for the fixed (GPS 2106) one.

I think you'll find that the 'S' gives you a compass and barometer (and hence altitude) reading. I take mine skiing where altitude comes into play. Not so sure of its use on a boat where the altitude reading tends to be zero (unless you're out in very rough weather!)

I've heard that the barometer side can, however, help get you through coding (where an on board barometer is a required).

Can't assist any further but hope that helps.

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