1. Using landmarks, aids to navigation, soundings by leadline or depth finder etc to conduct a boat safely through channels, along coast lines is called:
a) conning
b) piloting
c) navigation
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2.Chart reading requires the boater to be able to convert "plan" views to:
a) a "boat's eye" view
b) to vertical view
c) to map view
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3. When conning, or using a strip chart, it is usually more convenient to:
a) hold the chart so that north is top (away from the observer)
b) hold the chart so that the direction being travelled by the boat is at the top (away from the observer)
c) hold the chart vertically with north at the top
d) none of the above
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4. Interpreting height contours on a chart involves:
a) making a chart or graph with depths of water shown on it
b) drawing a graph using horizontal lines, equally spaced, to represent the intervals of the height contours with the horizontal axis equal to the length on the coastline on the chart
c) plotting length of the coastline on the chart vertically and contours horizontally
d) None of these methods will help
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5. Limits of visibility can be better understood if one remembers that:.
a) chart symbols are drawn at a much larger scale than other features on the chart
b) the human eye is unable to detect very fine detail
c) the earth's surface is curved
d) all of these
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6. The act of converting magnetic reading to true readings is referred to as:
a) uncorrecting
b) correcting
c) following a true course
d) following a magnetic course
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7. Converting from true to magnetic, and vise versa is done by applying variation from the compass rose on the chart. Variation can be either east or west and if converting:
a) from true to magnetic, east values are subtracted
b) from magnetic to true, west values are added
c) from true to magnetic, west values are added
d) Both a) & c)
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8. The acronym (TVMDC)"T V Makes Dull Children" is used to uncorrect a true course by:
a) entering the true course e.g. 267° adding a variation of 8° West to determine magnetic and adding deviation if it is West 0°to find Compass of 275°
b) entering the true course e.g. 267° adding a variation of 8° East to determine magnetic and adding deviation if it is East 0°to find Compass of 275°
c) entering the true course e.g. 267° subtracting a variation of 8° West to determine magnetic and adding deviation if it is West 0°to find Compass of 275°
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9. Which of the following, used to obtain LOPs (Lines of Position), will NOT work:
a) two or more lights if they cannot be identified
b) artificial ranges which are shown on the chart of the area
c) two natural features which can be brought into line from a boat if they are shown on the chart
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10. When sailing into a harbour using an artificial range and the top mark appears to be to the left of the bottom marker we should turn:
a) to the left (port)
b) to the right (starboard)
c) Neither of the above
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11. When sailing in on an artificial range where the top mark appears to the right of the bottom marker and there is a strong current from the left we should:
a) line our boat up directly with the two range markers
b) steer our vessel to starboard
c) steer our vessel to port
d) steer towards the lower marker and continue to monitor the markers to ensure they remain in line even if we must over-steer
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12. To obtain an LOP using a hand-bearing compass it is important that we:
a) take the bearing only with the compass held away from magnetic influences
b) take the bearing only if the object can be identified on the chart
c) record the scale on the compass by sighting the object carefully, compensating when necessary, for the pitch and roll of the vessel
d) convert the scale reading using TVMDC to a true bearing and determine the reciprocal bearing
e) draw line on the chart using the reciprocal bearing through the object
f) all of the above steps are necessary
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13. Which of the following statements is NOT correct:
a) the reciprocal bearing is obtained by adding adding 180° if true bearing is less than 180°
b) a hand-bearing compass reading can be converted to a true bearing by subtracting a West amount of variation
c) three LOPs are needed to obtain a FIX
d) a minimum of two LOPs are required to obtain a FIX
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14.The difference between a FIX and a "Running FIX" is:
b) the running FIX is obtained from two LOPs which are taken at different times
c) the running FIX is more accurate than the regular FIX
d) both a) & b) are true
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15. When a FIX has been obtained, position is reported by:
a) recording in the log how the FIX was obtained
b) giving your vessel's distance and bearing from some prominent feature
c) giving your vessel's position in terms of latitude and longitude
d) all of the above
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