J2K100 - Comprehensive System (One Engine)

MSRP $6,263.70

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  • N2KView components

Most modern electronic engines have a digital interface called J1939. Maretron’s J2K100 is a gateway that converts the J1939 protocol to marine industry standard digital protocol called NMEA 2000. The J2K100 converts many engine parameters including RPM, boost and oil pressure, oil and coolant temperature, voltage, fuel rate, engine hours and more depending on the particular engine. The GPS antenna/receiver (GPS200) provides the vessel’s speed that allows the display to compute and show the fuel economy (gallons/hour or liters/kilometer). The 8” touchscreen monitors all the engine data and sounds the external buzzer if any parameter goes out of range. The data recorder gives a complete record of all monitored parameters.

The following table shows the products included within this example system plus a list of the information or data available for display.

Product Description Available Data List
TSM800C Helm Display 8” Touchscreen displays data in this list, monitors the data and if there is a problem will sound external buzzer.
ALM100 Alarm buzzer Sounds a loud buzzer when any monitored data in this list goes outside programmed limit
J2K100 Engine Monitor Monitors RPM, boost and oil pressure, oil and coolant temp, voltage, fuel rate, hours, and more depending on the particular engine
GPS200 Cabin Top GPS Position, speed over ground, course over ground, time, date, magnetic variation and more
VDR100 Vessel Data Recorder Performance analysis, vessel tracking, preventative maintenance, warranty incident, and accident investigation

The following components (click to enlarge) are examples of how monitored data can be displayed on the TSM800C using N2KView. The components are arranged on favourite screens at positions and sizes to suit the user's needs. See N2KView web page for examples of full screenshots.

Afternoon Twilight

Anchor Watch


COG Digital

COG Head Up Rose

COG North Up Rose

Course Over Ground Digital

Distance to Empty

Engine Coolant Temperature

Engine Coolant Temperature Digital

Engine Fuel Economy

Engine Fuel Rate Digital

Engine Fuel Rate Gauge

Engine Hours

Engine Load Gauge

Engine Oil Pressure Bar Graph

Engine Oil Pressure Digital

Engine Oil Pressure Gauge

Engine Room Video with PTZ

Engine Tachometer Gauge

GPS Status

Lat and Long

Lat and Long Degrees

Lat and Long DMS

Local Date

Local Date DMY

Local Date MDY

Moon Phase


Time to Empty

UTC Time