Data Available via NMEA Gateway?

[TimS]

Hi, I am trying to find a list of the data that's available via Yamaha's NMEA gateway - is there some manual that tells this? I have an F70, with water pressure sensor, and Command Link square tach, which displays water temp, pressure, oil pressure, voltage. I will be getting a GPS / fishfinder combo, and am wondering if the NMEA gateway makes sense. I'd be particularly interested to get fuel consumption data, if the gateway provides that. Thanks for your help and pointers!

Tim

[boats.net]

Here is some information on the NMEA 2000 Gateway.
O2009-014.pdf