Downloadable software in the field of marine electronic devices, namely software which receives data from sonar, laser scanning, radar, automatic identification system (AIS), imagery or other survey techniques and continuously identifies both moving and stationary targets within a designated area; downloadable software in the field of marine electronic devices, namely software which receives data from sonar, laser scanning, radar, automatic identification system (AIS), imagery or other survey techniques and continuously identifies divergent targets and approaching hazards within a designated area.