ARPA - Automatic Radar Plotting Aids, allowing the skipper to solve a number of tasks to ensure the safety of vessel navigation in all navigation areas and conditions. The main tasks include:

1. automatic detection of the targets;

2. automatic and manual capture objectives;

3. automatic target tracking;

4. signaling of dangerous situations;

5. calculation and display of previous goals locations;

6. automatic calculation and display of coordinate, motion parameters of targets and parameters of approaching them;

7. reproduction of target divergence maneuver;

8. reproduction of the situation.