Navman's 2100 series Depth Sounder can also be configured to operate as a repeater allowing mutliple depth instruments to be mounted on a single vessel. In this mode, it displays depth information from any other instrument sending NMEA 0183 data, including another Navman depth sounder.

The Navman 2100 series Speed is an accurate multi-functional instrument that displays speed, distance and water temperature. Speed can be calibrated easily over a measured distance and is fully adjustable from the front keys. Calibration parameters are stored in non-volatile memory and are retained even when the power is turned off.