Guidance and Navigation MCQ
How is the ambient atmosphere forced into the hydraulic system?
Answer
Correct Answer:
During connection of quick-release coupling halves
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What is Polaris the star of?
Answer
Correct Answer:
The Northern Hemisphere
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What is the name of the star that is the pole star for the Northern Hemisphere?
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What is a navigator's LOP?
Answer
Correct Answer:
Plotting Sheet
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What type of book does the Pilot provide?
Answer
Correct Answer:
A guide book
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What is the Pilot book called?
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Correct Answer:
A guide book giving details of coastlines and harbours
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A pilot book is what?
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Correct Answer:
A guide book giving details of coastlines and harbours and sailing directions
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What could be considered a passage plan?
Answer
Correct Answer:
A written plan of a proposed voyage
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A written plan of a proposed voyage is known as what?
Answer
Correct Answer:
Passage plan
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What is parallax?
Answer
Correct Answer:
The apparent differences in the positions of objects viewed along different lines of sight
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What is the apparent differences in the positions of objects viewed along different lines of sight?
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What part of the ship is responsible for keeping the marine charts up to date?
Answer
Correct Answer:
Notices to Mariners
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What is the purpose of the Notice to Mariners?
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Correct Answer:
Updates and corrections to chart data
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In what direction does the magnetic field of Earth point?
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What two celestial bodies affect the Neaps tide?
Answer
Correct Answer:
Sun and moon
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What is the general meaning of the word Navigation?
Answer
Correct Answer:
The process of plotting and directing the course of a vessel
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What is the process of plotting and directing the course of a vessel called?
Answer
Correct Answer:
Navigation
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What is a nautical mile?
Answer
Correct Answer:
A unit of distance that is equal to 1/60 of a degree
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Along what line of longitude at the latitude of the distance to be measured is a nautical mile equal to 1/60 of a degree?
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What is a nautical mile equal to in terms of a degree?
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Who devised the Mercator projection?
Answer
Correct Answer:
Geradus Mercato
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What year did Mercator project his globe onto a flat map?
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What does "making" mean in a figurative sense?
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What is used to denote progress?
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In what direction does the Earth's magnetic field point?
Answer
Correct Answer:
Northerly
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What does the term Magnetic north refer to?
Answer
Correct Answer:
The northerly position of the earths magnetic field
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What is the northerly position of the earths magnetic field?
Answer
Correct Answer:
Magnetic north
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When are magnetic bearings used?
Answer
Correct Answer:
Magnetic bearing; a baring taken from a magnetic compass
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What is a magnetic bearing?
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What does the Magnetic Compass align with?
Answer
Correct Answer:
The earths magnetic field
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What is the name of the device that aligns with the earths magnetic field?
Answer
Correct Answer:
Magnetic Compass
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What is it difficult to guess about the center when taking a sun or moon sight?
Answer
Correct Answer:
Where the center is
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What is the term for aligning the edge of an object to the horizon?
Answer
Correct Answer:
Lower Limb
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What do range lights do?
Answer
Correct Answer:
Provide a transit along a narrow channel
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What are the terms used for lights placed to provide a transit along a narrow channel?
Answer
Correct Answer:
Leading Lights
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What is a measure of angular distance from the equator on the Earth's surface?
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What are lateral marks used to show?
Answer
Correct Answer:
Safe water channel
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What does indicating the edge of a safe water channel mean?
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What is the term given to the approach to or sighting of land after an ocean passage?
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What is the abbreviation for knots?
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What is a Knot equal to?
Answer
Correct Answer:
Nautical miles per hour
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What is another name for jetsam?
Answer
Correct Answer:
Objects that have been thrown overboard
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What are the objects that were originally stuff jettisoned by a ship?
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What type of mark signify a hazard?
Answer
Correct Answer:
Buoyage marks
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What does a buoyage mark indicate?
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In what latitude range does the ITCZ lie?
Answer
Correct Answer:
5⁰ north and south of the equator
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What is the name of the area of still air between 5 and north and south of the equator?
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What are tables that estimate the value between tabulated results?
Answer
Correct Answer:
Almanac tables
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What are interpolation tables used for?
Answer
Correct Answer:
Almanac tables to estimate value between the tabulated results
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What are the International marine signal flags?
Answer
Correct Answer:
A system of flag shapes and designes used to communicate messages at sea
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What do marine signal flags communicate?
Answer
Correct Answer:
Messages at sea
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What does the imaginary line in the Pacific Ocean vary from?
Answer
Correct Answer:
180⁰ meridian
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Along with the 180 degree meridian, what is another used to avoid populated land areas?
Answer
Correct Answer:
International Date Line
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What is an example of an Intercept?
Answer
Correct Answer:
LOPs cross
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What is a term for a location where two lines cross?
Answer
Correct Answer:
Intercept
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What is at the apex of a sextant frame?
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What are sextant frame's mirror at the apex of?
Answer
Correct Answer:
Index mirror
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What is the international recognition of the AIALA system?
Answer
Correct Answer:
Internationally recognised systems of buoyage
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What is the international system of buoys?
Answer
Correct Answer:
LA Systems
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What type of glass is the Horizon Mirror?
Answer
Correct Answer:
Half clear glass half mirror
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What can be used to view the horizon at the same time as a reflection of whatever is showing in the index mirror?
Answer
Correct Answer:
Horizon Glass
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What is a horizon?
Answer
Correct Answer:
The apparent line
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What is the apparent line for an observer where the earth's surface and the sky meet?
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What does the height of tide indicate above chart datum?
Answer
Correct Answer:
Depth of water
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What does the height of an eye above sea level serve as a correction for?
Answer
Correct Answer:
Site reduction
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What is the opposite to the heading of a vessel?
Answer
Correct Answer:
The course made good
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What is the direction a vessel is pointing?
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What does a compass act as an assistant for?
Answer
Correct Answer:
A small portable compass
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When using a compass to navigate, what is the name of the device that you hold?
Answer
Correct Answer:
Hand held, Compass
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What handheld tool is used to find the magnetic direction?
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What longitude line passes through the Royal Observatory in the UK?
Answer
Correct Answer:
Greenwich Meridian
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Where is the Royal Observatory located?
Answer
Correct Answer:
Greenwich
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A system that uses information broadcast from orbiting what?
Answer
Correct Answer:
Satellites
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What are the latitide and longitude of a receiving device calculated by GPS?
Answer
Correct Answer:
Longitude and latitude
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What is the mean of the times of noon at the Greenwich Meridian?
Answer
Correct Answer:
GMT, Greenwich Mean Time
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The GHA is a measurement of a position, in what?
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GHA is an abbreviation for what?
Answer
Correct Answer:
Greenwich Hour Angle
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What is the point on the earth's surface directly beneath the zenith?
Answer
Correct Answer:
Geographical Position or GP
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What type of information can be conveyed by the term forecasting terms?
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What are some examples of weather terms used to convey specific, concise, information on weather conditions?
Answer
Correct Answer:
Forecasting Terms
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Where does Flotsam come from?
Answer
Correct Answer:
A shipwreck
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What is Flotsam?
Answer
Correct Answer:
The floating debris resulting from a shipwreck
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What is an example fix used to verify position?
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What is the name of the first point of Aries?
Answer
Correct Answer:
A point on the celestial sphere
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What is the name of the point on the celestial sphere which is used as a reference point?
Answer
Correct Answer:
First Point of Aries
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A fathom is about how many feet long?
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What is one fathom equal to in modern measurement?
Answer
Correct Answer:
6 feet or 1.8 meters
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What term describes the DR position that has been adjusted to allow for Set and Drift?
Answer
Correct Answer:
Estimated Position
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What are ephemerals?
Answer
Correct Answer:
A published collection of tables giving coordinates for astronomical bodies for specific times
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What is the name given to a published collection of tables giving coordinates for astronomical bodies for specific times?
Answer
Correct Answer:
Ephemerals
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The DR is called what in the Northern Hemisphere?
Answer
Correct Answer:
Estimated Position
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What is the PP; Estimated Position, the DR plus the effects of current?
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Electronic charts are either called what or what?
Answer
Correct Answer:
Vector charts
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What are the two different chart types?
Answer
Correct Answer:
Vector charts and Raster marine charts
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What is a method of standardizing the keeping of logs digitally?
Answer
Correct Answer:
Electronic logs or E log books
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What are electronic logs used for?
Answer
Correct Answer:
Standardising the keeping of logs digitally
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What are the doldrums?
Answer
Correct Answer:
The Inter-tropical Convergence Zone
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The Doldrums is an area of very still air, between what two numbers are referenced in the Inter-tropical Convergence Zone?
Answer
Correct Answer:
5 degrees north and 5 degrees south
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The Doldrums is located in which belt of very still air?
Answer
Correct Answer:
Inter-tropical Convergence Zone
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For what correction should an altitudes of an eye be compensated?
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Correction to be applied to what?
Answer
Correct Answer:
Sextant attitudes
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What causes the compass errors?
Answer
Correct Answer:
Metallic o magnetic objects on board the vessel
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What caused the compass errors on board the vessel?
Answer
Correct Answer:
Metallic o magnetic objects
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What is the measurement of Declination?
Answer
Correct Answer:
The angular distance to a point on the celestial sphere
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What is the angular distance to a point on the celestial sphere measured north and south from the celestial equator along the hour circle?
Answer
Correct Answer:
Declination
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What term best describes determining a position by plotting courses and speeds from a known position?
Answer
Correct Answer:
Reckoning
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What is the name of the course that tells you which way to go?
Answer
Correct Answer:
Compass Course
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The ship to steer has been corrected for what?
Answer
Correct Answer:
Current, variation, and deviation
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What are the main purposes of Cartography?
Answer
Correct Answer:
The study and the construction of maps
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What do maps help to study and to construct?
Answer
Correct Answer:
Cartography
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What are the four main points of the compass?
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Correct Answer:
North, East, South and West
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How many main points of the compass are there?
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What type of marks indicate the direction of safe water?
Answer
Correct Answer:
Cardinal Marks
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What are cardinal marks indicating the direction of safe water?
Answer
Correct Answer:
Buoyage marks
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What does a cape project out into?
Answer
Correct Answer:
A large body of water
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What is a cape?
Answer
Correct Answer:
A piece of land that that projects out into a large body of water
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What type of scale does the Beaufort Scale represent?
Answer
Correct Answer:
Numerical
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What numerical method of describing wind strength are we talking about?
Answer
Correct Answer:
Beaufort Scale
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What does the term bearing mean?
Answer
Correct Answer:
The compass reading taken of a object
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What is a beacon used for?
Answer
Correct Answer:
An unlit navigation mark
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What is the Barometric Gradient?
Answer
Correct Answer:
The rate at which atmospheric pressure rises of falls
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What is the rate of atmospheric pressure rise or fall?
Answer
Correct Answer:
Barometric Gradient
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What is an example of a barometer?
Answer
Correct Answer:
An instrument for measuring atmospheric pressure
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What is the name of an instrument used to measure atmospheric pressure?
Answer
Correct Answer:
Barometer
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What is the wind felt on board of a ship?
Answer
Correct Answer:
Apparent wind
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What would modify an actual wind?
Answer
Correct Answer:
The wind created by the vessels movement
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What will most likely be modified by the wind created by the vessels movement?
Answer
Correct Answer:
The wind as felt on board
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Anabatic winds are caused by what?
Answer
Correct Answer:
Warm air rising up a slope
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What is the measure of altitude?
Answer
Correct Answer:
The angular distance of a celestial body above the viewers horizon
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What is the distance that a celestial body is above the viewers horizon?
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What does an almanac include?
Answer
Correct Answer:
Tide Tables astronomical ephemerals etc
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What is an actual depth?
Answer
Correct Answer:
The true depth of water
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What is the true depth of the water as opposed to a predicted depth?
Answer
Correct Answer:
Actual depth
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