Standard features include an EBL and EVRM, Echo Plot, Guard Zone Alarm, Off-center and Watch Mode. Continuous and automatic control of receiver tuning ensures optimum performance and target detection while keeping overall radar operation simple. The Guard Zone Alarm offers aural and visual alarms when a target enters/exits a user-defined area. The Economy Mode feature reduces power consumption during standby.
When connected to appropriate sensors outputting NMEA0183 data, the 1731 Mark-2 displays the following information: ship's position in Lat/Lon or Loran-C TD's, cursor position in Lat/Lon (requires AD10 heading), ship's speed and course/range/bearing to the selected waypoint and Lollipop waypoint mark.