A common language for instruments
Signal K is an open format for sharing marine data on a network. A gateway can receive data from compatible instruments and make it available to different applications, avoiding a separate connection for every display.
What to check before installation
Identify your equipment interfaces, power requirements and necessary adapters. Compatibility depends on each instrument and its configuration; consult the manuals and test the data before relying on it underway.
Signal K with Open Marine
Open Marine uses Signal K as a data bus to show information on devices connected to the boat network. Installation and integration can be adapted to existing equipment.
An example on a sailboat
Consider a USB GPS, an AIS receiver and a depth sounder connected through a gateway. Each source produces its own messages; the server receives them, identifies their origin and makes them available to applications. A cockpit tablet and a chart-table laptop can then use the same local network without duplicating every sensor cable. The exact conversion depends on the adapters and messages supported by each device.
How to check the integration
Record the model, protocol, power and adapter for each source. Connect one source first and check position, units and updates on the server; add the others one at a time. If two GPS or heading sources exist, identify which is selected and see what happens when one is disconnected. A number on screen without a current timestamp or updates does not prove that the sensor is still connected.
Common questions
Does it need internet? A local installation can exchange data within the boat network offline; particular charts, forecasts or updates may need connectivity. Does it automatically convert every instrument? No: compatible interfaces and drivers are required. Does it replace GPS or AIS? No, it shares data from those sources; if a source fails, the server cannot create a trustworthy measurement.