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BDOC Final Exam Complete Questions And Answers
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BDOC Final Exam Complete Questions And Answers
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BDOC Final Exam Complete QuestionsAnd Answers
Table 3A Areas CORRECT ANSWERS Restricted, Pilot, Coastal, Open
Table 3A Distances from Land to Shore CORRECT ANSWERS < 2mi, 2-10mi, 10-30mi,
> 30mi
Table 3A FOM's CORRECT ANSWERS <=2, <=4, <=6, <=7
Table 3A Max Fix Intervals CORRECT ANSWERS 3min, 3-15min, 15-30min, 30min+
Buoy Shapes CORRECT ANSWERS Can, Nun, Pillar, Spar, Sphere
IALA A CORRECT ANSWERS Red Port, Green Starboard (Africa, Asia, Australia,
Europe)
IALA B CORRECT ANSWERS Green Port, Red Starboard (America, Japan, Korea,
Phillippines)
Compass Variation CORRECT ANSWERS error in the compass reading caused by the
difference in location between the magnetic north pole and the true north pole
Compass Deviation CORRECT ANSWERS the error of a magnetic compass due to
local magnetism (magnetic properties of vessel)
US Navy Datum CORRECT ANSWERS WGS 84
3 Segments of GPS CORRECT ANSWERS Space, Control, User
Fourth satellite in GPS fix provides CORRECT ANSWERS Altitude
Advantages of Mercator Plot CORRECT ANSWERS Rhumb lines at straight lines, easy
distance measuring, lat/longs are straight lines with correct angular relationships
Disadvantages of mercator CORRECT ANSWERS great circles as curves, minor
distortion at extreme latitudes
Gnomic Advantages CORRECT ANSWERS Great circles as straight lines, good for
long distance voyages
gnomic disadvantages CORRECT ANSWERS Distance and direction cannot be
measured directly (unusable as a working chart); and
, - Distortion of shape and scale increases as distance from the center of the projection
(the point of tangency) increases.
US Fleet Guides CORRECT ANSWERS Port information for USN bases
Nav Rules and Regs CORRECT ANSWERS Rules to prevent collisions at sea,
published by USCG
Coast Pilots CORRECT ANSWERS INLAND waters, NOAA
List of Lights CORRECT ANSWERS lights for foreign waters, NGA
Light List CORRECT ANSWERS inland lights, USCG
Sailing Directions CORRECT ANSWERS NIMA
CHART 1 CORRECT ANSWERS Symbols on charts, NOAA
Describe set and drift CORRECT ANSWERS set - direction in which you are being
pushed
drift - velocity
Six Rules of Dead Reckoning CORRECT ANSWERS 1.) every hour on the hour
2.) every course change
3.) every speed change
4.) every line of position
5.) Every fix or running fix
6.) Label each fix with course, speed and time
2 currents CORRECT ANSWERS Ebb (away) and Flood (towards)
Perigee CORRECT ANSWERS moon closest to earth
Apogee CORRECT ANSWERS Moon is farthest from the earth
Slack Water CORRECT ANSWERS A time of no tide-induced currents that occurs
when the current changes direction.
The stand CORRECT ANSWERS state of tide at high or low water when there is no
sensible change in height of tide
Where is GMT located CORRECT ANSWERS ZULU - 000
Where is the international date line? CORRECT ANSWERS 180 degrees longitude
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