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Ockam Hardware GPS The second most important instrument input is a GPS, which produces the following items: Position (LATL/ON) Course and speed over ground (COG/SOG) Waypoint range & bearing (R/B) There are several benefits acruing from this data: Position enables waypoint range & bearing from other sources. When racing, waypoints are most often generated by on-board software which has its own database of marks. These applications need present position to calculate waypoint range & bearing, laylines and other items. COG/SOG in combination with boatspeed and heading enables current calculation. The Ockam system uses GPS data in the following ways: Distributes GPS items to displays, on-board software and via NMEAtap to other on-board hardware (read more about this feature (PDF)). Provides a means for on-board software to display its outputs. When the on-board software is not active, GPS R/B is automatically used. Provides back range & bearing to a previous location set by the Reset Back R/B function. This item is independent of onboard software and GPS waypoints. When needed, COG can be subsituted for heading, and SOG for boatspeed. On T1 systems, the GPS connects directly. On 001 systems, the 041 GPS interface is used. Web store