ARPA stands for Automatic Radar Plotting Aid. It is a sophisticated navigation system used on ships that combines traditional radar with computer plotting capabilities. ARPA can automatically acquire radar targets and compute useful information like distance, direction, and closing speed to help navigators make collision avoidance decisions, especially in busy areas. Radar works by transmitting radio pulses that bounce off objects and return to the antenna, allowing the system to determine the object's position. ARPA enhances radar by continuously tracking multiple targets and performing calculations to assist sailors.

1. Relationships
between
RADAR
and ARPA

2.  ARPA in essence is anADVANCE RADAR PROGRAMMING
ACTUATOR (automatic radar plotting aid ) use in
navigation in a highly technological advantage. It is widely
use in aircrafts air-navigation and aboard vessel ships,
perhaps even on space capsule crafts. Radar is an acronym
for Radio Detection and Ranging. It uses RF (Radio
Frequencies) to detect and range a so called "Target". It is an
active sensor which mean that it emits power (RF waves)
which bounces off a target and are detected when the wave
is received.The time delay between transmission and
detection produces range given that the RF wave propagates
at a uniform speed.

3.  Basically ARPA is the equipment by means of a
computer system operating in conjunction with radar.
Radar transmitter generates very short pulses of radio
waves.When the waves of one of these pulses
encounter any obstacle, such as a ship or shore line,
part of the radiated energy is reflected and received
by the original radar.The reflected pulse constitutes a
radio echo.The time between radiating the pulse and
receiving the echo can be accurately measured.
Therefore the distance between the radar and the
ship is calculated.The direction of the ship is the
direction of the pulse transmitted.

4.  Radar and ARPA simulator system capable of conducting practical/
simulation trainings specified in this code conduct.This simulator should
include main/Lecturer station and minimum 1Workstation! "own ship"
station, each with separate conning and engine control consoles. Each
"own ship" station, together with its control console should be situated in
a room or cubicle and simulator system should comply with
requirements of this code of practice and approved by PMO(Means Ports
& Maritime Organization ).
 Evaluation of navigational information derived from all sources
including RADAR andARPA in order to make and implement command
decision for collision avoidance and for directing the safe navigation of
the ship.

5. ARPA is an acronym for Automatic Radar Plotting Aid. It is a sophisticated piece of
navigation equipment found on the bridge of most ocean-going vessels that
combines a traditional radar display with a computer driven plotting device. After
either manual or automatic acquisition of radar targets the ARPA will compute and
display a variety of information useful to the navigator in making collision
avoidance and navigational decisions. It is indispensable when navigating in areas of
high traffic density such as the Straits of Mollucca or the English Channel, especially
in restricted visibilityThe radar dish (or antenna) transmits pulses of radio waves or
microwaves that bounce off any object in their path.The object returns a tiny part
of the wave's energy to a dish or antenna that is usually located at the same site as
the transmitter.

6. The radar dish (or antenna) transmits pulses of radio waves or
microwaves that bounce off any object in their path.The object
returns a tiny part of the wave's energy to a dish or antenna that is
usually located at the same site as the transmitter.

7.  IMO model courses
 STCW-78 convention and STCW Code.
THANKYOU!!!