Walker 7070 Mk2 Electromagnetic Speed Log John Lilley and Gillie

Type-approved speed log for vessels over 500 GRT or longer than 50m
Measures forward and astern speeds from -20 to +80 knots
Includes separate P303 electronic unit and P1248 display for flexible installation
Delivers reliable NMEA0183 and 200PPNM signals to other onboard systems
Expandable with multiple display units via daisy chain connection

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