ARPA

Question 1

What does ARPA Do for you?

Answer 1

Aim of achieving the same performance with multiple targets using ARPA that is achievable plotting a single target manually.

Question 2

IMO approved?

Answer 2

ARPA is IMO approved

Question 3

What does ARPA help with?

Answer 3

-reduce work load
-assists with radar data interpretation as target tracking is automatic.
-provides continuously updated info. Enables rapid situation evaluation.
-if used properly then reduces risk of collision.

Question 4

Which solas chapter is ARPA?

Answer 4

Solas chapter 5 reg 19

Question 5

Name 5 IMO requirements for target tracking radar:

Answer 5

1- must provide laid down accuracy within 1 minute and 3 minutes.

2- Arpa should have a trial manoeuvre function. Should be clearly shown on the display.

3- arpa should indicate lost targets.

4- warnings should be able to be activated or deactivated.

5- range and bearing info must be quickly available for objects appearing on arpa display.

6- positive indication of time scale should be given.

7- arpa should be able to show history. Min of 4 positions over at least 8 mins.

8- arpa must be able to track at least 20 targets if on auto and 10 in manual.

9- target acquisition may be manual or automatic but there must be facility to manually acquire and cancel.

Question 6

Course and speed are both necessary to the function of an ARPA.
Where might the course inputs come from?
Where might the speed inputs come from?

Answer 6

Course inputs: gyro, flux gate, magnetic compass.

Speed input: log, Doppler water speed, Doppler ground speed.