Navigation rules in restricted visibility Flashcards
WHAT SCALE CHART IS USED WHEN PILOTING?
LARGEST SCALE CHART
GAZETTER
A LIST OF LANDMARKS OR NAVAIDS IDENTIFIED BY LAT/LONG AND ID
THE SHIFT POINTS FOR CIC AND THE BRIDGE SHALL DIFFER BY ATLEAST?
ONE FIX INTERVAL
WHAT IS A FIX?
POINT OF INTERSECTION OF THREE OR MORE SIMULTANEOUSLY OBTAINED LINES OF POSITION INDICATING A VESSELS EXACT POSITION
ELECTRONIC FIX
TWO VISUAL LINES OF POSITION AND ONE RADAR RANGE ARC
WHAT SYMBOL IS USED FOR ELECTRONIC FIX
TRIANGLE
ESTIMATED POSITION
TWO LINES OF POSITION - MAYBE QUESTIONABLE
DR SHOULD BE PLOTTED HOW FAR IN ADVANCE FOR RESTRICTED VISIBILTY
AT LEAST TWO FIX INTERVALS
WHAT DOES RADAR STAND FOR
RADIO DETECTION AND RANGING
WHAT DOES A RADAR DETERMINE
RANGE (DISTANCE) AND BEARING (DIRECTION) TO AN OBJECT BY MEASURING THE INTERVAL OF TIME BETWEEN THE TRANSMISSION AND RECEPTION OF THE SIGNAL RETURNED AS AN ECHO
4 FACTORS AFFECTING THE ACCURACY OF THE RADAR
BEAM WIDTH, PULSE LENGTH, MECHANICAL ADJUSTMENT, INTERPRETATION
A RADAR CAN MORE ACCURATELY DETERMINE RANGES THAN BEARINGS
TRUE
THE MOST ACCURATE RADAR FIX RESULTS FROM MEASURING AND PLOTTING RANGES TO TWO OR MORE OBJECTS
TRUE
WHERE SHOULD YOU TAKE RADAR RANGES FROM
ASTERN AND AHEAD BECAUSE OF THEM CHANGING RADIPLY
STRAIGHT LINES
VISUAL BEARING
CURVED LINES
RADAR RANGE (ARC)
SHORT BLAST
1 SECOND OF DURATION
PROLONGED BLAST
4 TO 6 SECONDS
A VESSEL NOT UNDER COMMAND, VESSEL RESTRICTED IN HER ABILITY TO MANUEVER, VESSEL UNDERWAY OR AT ANCHOR, VESSEL ENGAGED IN TOWING OR PUSHING SHALL SOUND
ONE PROLONGED TWO SHORT NOT MORE THAN 2 MINTUES
A VESSEL UNDERWAY AND MAKING WAY SHALL SOUND
ONE PROLONGED EVERY 2 MINUTES
A VESSEL UNDERWAY NOT MAKING WAY SHALL SOUND
TWO PROLONGED EVERY TWO MINUTES
A VESSEL TOWED OR IF MORE THAN ONE VESSEL BEING TOWED THE LAST VESSEL IN THE TOW SHALL SOUND
ONE PROLONGED AND THREE SHORT BLASTS EVERY TWO MINUTES
A VESSEL PUSHING OR BEING PUSHED AS A COMPOSITITE UNIT SHALL BE CONSIDERED AS A?
POWER DRIVEN VESSEL
A VESSEL AT ANCHOR SHALL SOUND?
INTERVALS NOT MORE THAN ONE MINUTE RING THE BELL RAPIDLY FOR 5 SECONDS
IF A VESSEL AT ANCHOR IS 100 METERS OR MORE THEY SHALL SOUND?
THE BELL SHALL BE SOUNDED FORWARD AND THE GONG AFT FOR FIVE SECONDS
IN ADDITION A VESSEL AT ANCHOR
ONE SHORT ONE PROLONGED ONE SHORT
A VESSEL AGROUND SHALL GIVE THE SIGNAL
RAPID RINGING OF THE BELL AND GONG IF NECESSARY FOLLOWED BY THREE DISTINCT BELL AND
IN ADDITION A VESSEL AGROUND SHALL SOUND
TWO SHORT AND ONE PROLONGED
VESSEL 12M - 20M SHALL NOT
NOT OBLIGED TO GIVE BELL SIGNAL HOWEVER SHALL GIVE SOME OTHER EFFICIENT SIGNAL OF NOT MORE THAN 2 MINUTES
A PILOT VESSEL SHALL SOUND
FOUR SHORT BLAST
THREE VESSELS NOT REQUIRED TO GIVE SOUND SIGNALS IN RESTRICTED VISIBILITY
ANCHORED AT SPECIAL ANCHORAGE, VESSEL LESS THAN 20 METERS, BARGE,CANAL BOAT, SCOW, OR OTHER NON-DESCRIPT CRAFT
NAVIGATIONAL AIDS SHALL BE CLEARLY MARKED TO INCLUDE BOTH VISUAL AND ? AIDS
RADAR
LIST THE FOUR NAVIGATIONAL OBSERVANCES USED TO TAKE FIXES
BEARING TO VISUAL OBJECTS, DISTANCE TO RADAR OBJECTS, DEPTH SOUNDINGS, ELECTRONIC LINES OF POSITION
FIXES SHALL BE VERIFIED BY ALL AVAIABLE MEANS
DEPTH SOUNDINGS, AIDS TO NAVIGATION, RADAR FIXES, DGPS/GPS
LARGE SCALE CHARTS WITH TRACK LINES PLOTTED IN RESTRICTED WATERS SHALL BE INDEPENDENTLY CHECKED BY?
A SECOND PERSON
WHEN APROACHING A TURN TO PORT WHAT INFORMATION DOES THE NAV PLOTTER RELAY TO THE PORT SIDE BEARING TAKER?
THE TURN BEARING ALONG WITH WHAT VISUAL AIDS TO USE
IF A SHIP LOSES GYRO WHAT BEARING WILL YOU USE TO TAKE A FIX
RELATIVE
WHAT ORDER DO YOU SHOOT RADAR RANGES
BOW, STERN, BEAM
YOU ARE CONSIDERED TO BE IN RESTRICTED VISIBILITY WHEN?
YOU HEAR A SOUND SIGNAL BUT DO NOT SEE A VESSEL
