1. When installing a GPS unit you should consider:
a) A mounting bracket to allow adjustment & easy removal
b) Use of external battery connections to permit the backlighting to remain on.
c) Avoid placing unit under biminis, bulkheads & cabins unless an external antenna can be mounted with a clear view of the sky
d) All of the above are necessary considerations
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2.When mounting an external GPS antenna:
a) Mount the antenna as high as possible to get better reception
b) Mount the antenna as low as possible consistent with clear view of sky
c) Consider mounting the antenna close to the mast for lightening protection
d) Avoid mounting the antenna on the stern pulpit of saiboats
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3. When using a hand-held GPS with an internal antenna:
a) Hold the "patch" antenna vertically for best reception
b) If the GPS has a rod-type of antenna move the rod until it is vertical or hold the unit so the rod is vertical
c) Hold the GPS with a "patch" antenna so the patch is horizontal
d) Both b) & c) are correct
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4. The interference which affects GPS receivers:
a) Is minimal on boats
b) Should be checked regularly away from local obstacles
c) Is not caused by items such as TV antenna amplifiers, microwave towers or industrial equipment
d)None of the above
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5. When mounting your GPS receiver:
a) Mount it close to your compass to allow easy comparisions
b) Mount it in an enclosed space under windshield glass so that it can remain warm & dry and yet still "see" the satellites above the horizon
c) Keep the GPS receiver away from the magnetic compass by at least 0.5 metres but still easily visible by the helmsperson
d) Both a) & b) are correct
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6. DGPS users have the advantage that:
a) More accurate positions can be achieved by the use of additional satellites.
b) Greater accuracy can be achieved without additional equipment.
c) Greater accuracy is achieved, however radio interference must be minimized.
d) Their GPS receivers can be used with autohelms for steering.
e) Their receivers are more accurate then GPS with WAAS.
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7. When selecting hand-held GPS receivers which of the following should be considered:
a) The number of channels, the number of WPTs & routes the unit will allow
b) The size of the display & "buttons" used by the receiver
c) The "user friendliness" of the unit and documentation provided
d) All of the above
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8. Which of the following is LEAST likely to cause navigational disasters
a) Errors within GPS computer programs
b) Errors introduced by extrapolating incorrect latitude & longitude from charts
c) Mistakes in entering values into the GPS receiver
d) Selection of WPTs without checking their position on charts
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9. One reason why WPT # near the top of the range (e.g. 299, 499) might be used is:
a) To store important WPTs for a future route
b) To store positions marking hazzards
c) To avoid selecting a name for some waypoints
d) None of the above
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10. Alarms are set on a GPS to:
a) Warn when a vessel drifts too far when it is at anchor
b) Indicate when the vessel has reached close proximity to a previously entered WPT
c) To indicate when our vessel is exceeding the maximum desired cross-track error
d) All of the above
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11. One reason why a GPS might indicate a bearing & distance to a point near Africa is:
a) A GOTO has been selected which contains no coordinates
b) A WPT has been entered incorrectly
c) Care was not taken to ensure the latitude & longitude selected were in the correct hemisphere.
d) Any of the above are possibilities
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12. A name should be entered for a WPT because:
a) It helps if other people need to take over & operate the vessel
b) It helps avoid errors when selecting WPTs for a route
c) Both a) & b) are correct
d) None of the above
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