TUTORIALS RR 0.25 NM RANGE 1 NMANTISEA LEFT CLICK TO BROWSE OR USE SHORTCUT BUTTONS TEXT NET LINKS RADAR EYE RADIO WAVES COLLISION NAVIGATION FALSE ECHOS TUNING EQUIPMENT WORKBOOK STARPATH TUNING PLOTTING NAVIGATION RADAR TRAINER RADAR DEMONSTRATOR AVOIDANCE EXITSTART EXERCISES GRAFTON RADAR WILLIAMSTOWN HEAD UP DISPLAY (Ranger Hope © 2005) PLOTTING TEXT

THE RADIO WAVE This presentation contains images courtesy of “Radar Master 5, National Module Code:ABF 534”. Australian National Training Authority ©1997

RADAR WAVES TRAVEL AT NM/SEC OR 300 MILLION MT /SEC SPEED =WAVELENGTH X FREQUENCY RADAR WAVES TRAVEL 300 MTRS IN A MICROSECOND 300 = 0.03 X = 0.1 X 3000

TUNING BRILLIANCE GAIN HEADING MARKER CHECK RANGE TUNING SCAN RANGES for targets ANTI SEACLUTTER check RETUNE as radar warms up A TO Z TUNING METHOD

PRESS POWER ON TO WARM UP

PRESS SCANNER ON

PRESS SELECT BRILLIANCE TO LEVEL REQUIRED

INCREASE GAIN until timebase covers the screen

INCREASE GAIN But don’t overdo it

INCREASE GAIN until timebase reaches edge

CHECK FOR TARGETS Under heading marker

RANGE RINGS ON 8NM 2NM RR

TUNE FOR MONITORS BEST LEVEL NM 2NM RR

USE ANTI-SEA CLUTTER CAREFULLY NM 2NM RR

CHECK TARGETS CLOSING ON THE EBL BACK NOW TRY THE DEMONSTRATOR

MUTUAL INTERFERENCE

A small pulse transmitter is mounted on the beacon which is triggered by the vessels radar pulse. The mark will be displayed on the screen only intermittently. The true echo of the beacon will appear on the screen in front of the identification signal.

Ramarks transmit pulses continuously or to special time schedules, rather than on receipt of a vessel’s radar pulse.

SARTS detect the incoming radar pulse from a searching aircraft or ship and respond by transmitting a distinctive signal of 12 blips extending approximately 8 nautical miles outward from the SART’s position.

SHIPS HEAD UP NORTH UP RELATIVE MOTION TRUE MOTION UNSTABILISED DISPLAY STABILISED DISPLAY

N U

TRUE MOTION TM EBL 300 EBL 315 EBL T TO 300T TRUE MOTION RELATIVE MOTION SHU DISPLAY UNSTABILISED 270T 285T 300T TARGET DISPLAY ON CHANGING OWN COURSE THE HEADING MARKER REMAINS STILL. THE TARGET BLURS AS OWN SHIP TURNS & THEN SETTLES ON THE WIDER RELATIVE ANGLE (EBL)

HM 270T - 300T TM NU EBL 240 HM NU EBL 240 HM EBL 240 TRUE MOTION RELATIVE MOTION NU DISPLAY STABILISED TARGET DISPLAY ON CHANGING OWN COURSE HM MOVES TO FOLLOW COURSE CHANGE & TARGET TRACE IS STATIC

RELATIVE MOTION SHU Other vessel stopped 000 N

A

COLLISION AVOIDANCE THE SS STOCKHOLM (BELOW) COLLIDED WITH THE SS ANDREA DORIA WITH THE LOSS OF 52 CREWMEN DESPITE A RADAR WATCH. IT WAS TO BE LATER CALLED THE FIRST: RADAR ASSISTED COLLISION READ HER STORY

CHECK TARGETS CLOSING ON THE EBL BACK DECREASING RANGE ON THE SAME EBL WARNS OF COLLISION

CPA &TCPA

WO 330 WAY OF OWN WAY OF ANOTHER

ASPECT

PLOTTING SHEET EXERCISES & ASSIGNMENTS STARTEXIT EXERCISE 1. OPERATION EXERCISE 2. TRANSMISSION EXERCISE 3. FALSE ECHOS ASSIGNMENT 4. THEORY ASSIGNMENT 8. STARPATH EXERCISE 7. PLOTTING EXERCISE 5. NAVIGATION CHECK YOUR PROGRESS PRACTICAL 1 PRACTICAL 2 EXERCISE 6. RULES Ranger Hope © 2004