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WorksheetsCRP OIC-NW
Total questions: 15
Worksheet time: 8mins
What is the error introduced into the satellite signal in the ephemeris data?
Group time delay error
Ephemeris delay error
Epsilon error
Clock time error
In Great Britain, the Nautical Almanac has been published annually and each page contains data that are tabulated for how many days?
2 days
5 days
3 days
4 days
You are plotting a fix. The Line of Position to be run forward is an arc from the radar range. What technique can you use?
the distance between Line of Position should be added to the radar range and a new swunged arc.
The position of the object observed should be advanced to the new time and a new arc swung using the radius of the old arc.
An arc should never be run forward.
The arc should be converted into a straight line using offsets and then run forward.
What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of June 21?
27 deg. 23 min. South
27 deg. 23 min. North
23 deg. 27 min. North
23 deg. 27 min. South
What instrument fitted with a prism is set on a compass repeater for observing the bearing of the sun?
Azimuth Circle
Alidade
Prismatic sighting vane
Bearing sight
What is your idea about of a cold front?
It is a vast cold air masses moving toward a low pressure
It is when a colder air is underrunning and displaciing warmer air
It is a vast cold air masses moving toward a high pressure
It is when the colder air is replace by warmer air
Common time on a typical clock measures a slightly longer cycle accounting for the Earth's axial rotation. How much is the difference between a sidereal day and a solar day
4.9005 SI seconds
4.5900 SI seconds
4.5090 SI seconds
4.0905 SI seconds
When using the depth finder in the open ocean, what phenomena is most likely provide a continuous trace that isn't from the actual bottom?
It generate echoes from the effect of vessel movements
It generate echoes from the effect of current
It generate echoes from school of fish
It generate echoes from depth scattering layer
How would you classify a 3D fix that consider altitude require in theoretical position lines when using GPS?
It requires 3 theoretical position lines
It requires 2 theoretical position lines
It requires 1 theoretical position lines
It requires 4 theoretical position lines
What do you call the altitude measured with sextant corrected for dip and index error?
Apparent altitude
Sextant altitude
Computed altitude
Observed altitude
What type of positioning system is enclosed by a semi-circle as plotted on a chart?
Dead reckoning position
Observed fix
Estimated position
Running fix
As you enter a U.S. Channel from seaward, how do the numbers on the buoys changes?
It increase with the can buoy being even numbered
It increase in channels going to the north or west and decrease in channels going south or east
It increase with the can buoys being odd numbered
It decrease with the can buoy being even numbered
When you are in Polar Region, which of the following weather condition is NOT expected?
To experience extensive snowfall
To encounter sea smoke
To experience mirages effects
To percieved a false horizon
How can the stability of the atmosphere be determined?
Surface temperature and dewpoint spread.
Atmospheric temperature and pressure at various levels.
Atmospheric pressure at various levels
Ambient temperature lapse rate
What is provided in the highest level of commercial navigational accuracy?
SPS, without selective availability
DGPS, within a coverage area
NAVSAT, using Doppler-shift
PPS, without selective availability
