Units Settings; Local Port Setup - Navico Simrad I3005 Operator's Manual

Use STW
Used for setting the speed source to be speed through water. When
enabled, the speed data will be STW rather than speed over ground
(SOG) on the trip log page.
Set log
Allows for manually entering the total trip log distance.

Units settings

Used for specifying the units of measurement.

Local port setup

Configure NMEA 0183 ports
Baud rate
This should be set to correspond with devices connected to the
NMEA 0183 input and output. The input and output (Tx, Rx) use the
same baud rate setting.
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Software setup | I3005/I3007 Operator Manual