Origins of Navigation
Navigation is known as an _________ and a science.
What compass is most used onboard a ship?
Gyrocompass
Pub 9 is known as what?
American Practical Navigator. Bowditch
What is an ATON?
Aid to Navigation
The Solar Day is equal to __________ rotations of the Earth relative to the Sun?
1
Navigation is divided into what 4 Primary areas?
Piloting, Dead Reckoning, Celestial Navigation, and Radionavigation.
What 2 types of magnetism is there?
Permanent and Induced. A metal bar having permanent magnetism will retain its properties when it is removed from a magnetic field. A metal bar having induced magnetism, however, will lose its properties when it is removed from the same field
Pub 102 is?
International Code of Signals
A vessel in doubt must immediately indicate such doubt by giving at least what signal?
5 Short, Rapid Blasts on the whistle
GMT stands for __________________________
Greenwich mean Time
Dead Reckoning DOES NOT consider the effects of __________ or ___________
Wind or Current
____________ is always equal to the difference between the value of True North and Magnetic North.
Variation
World Port Index is what Pub Number?
150
Any vessel may supplement the whistle signals prescribed by light signals, repeated as appropriate while a maneuver is being carried out. What supplemental light can be flashed for the absence of sound signals?
Inland Side: I intend to leave you on my port side.
Int'l: Altering Course to Starboard
One Flash
Time to Arc. Fill in the Blanks:
24Hrs=_________degrees
1hr=___________degrees
1min=__________Minutes
1Sec=__________Seconds
360 degrees
15 degrees
15 minutes
15 seconds
1 NM=_________Ft.
1 Mi=__________Ft
Simple Ratio used to convert NM to Statute Mi is________
6,076.1Ft
5,028Ft
1.15/1
Correcting is converting from ___________ course to a __________ course.
Can, Dead, Men, Vote, Twice, At, Elections.
Compass, Deviation, Magnetic, Variation, True, Add, Easterly D and V
These guides contain a number of chapters, each of which covers a port of major interest to naval vessels. They are prepared to provide important command, navigational, repair, and logistic information. This information is much like that contained in Coast Pilots and Sailing Directions, but it is oriented toward naval interests and requirements; they are not needed by, nor are they available to, non-naval vessels.
Fleet Guides. Pub 940, Atlantic Area
Pub 941, Pacific Area
Where can a Quartermaster find the Demarcation Lines for a Port?
Rules of the Road Book. COLREGS Demarcation Lines. Pg. 143
The difference between Mean and Apparent time at any instant is called ____________________________
The equation of time
1 Degree of Latitude=__________Minutes
1 Minute of Latitude=__________Seconds
1 Degree of Latitude=__________NM
60'
60"
60NM
C=022/D=4E/M=026/V=6W/T=_____
T=20
Notice to mariners is published how often?
Weekly
What are the Light Characteristics and arc of visbility for LPD-28?
Mast Light=225
Stern Light=135
Side Lights=112.5
Converting Time to Arc
14hrs 21min 39sec=__________________
210 Degrees 24 minutes 45 seconds
210 24' 45"