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Navigation
Terms
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| Azimuth
Ring = rotating outer ring on some hand compasses marked with
degrees. |
| Bearing
= compass direction to a landmark. |
| Chart
= a detailed map for nautical use. |
| Course
= direction you want to go. |
| Dividers
= an instrument for dividing and measuring lines. |
| Easting:
The number used in UTM to define how far east or west the position
is. |
| GPS,
Global Positing System: A network of satellites and mobile receivers
used in electronic navigation. |
| Heading
= compass direction boat is pointing. |
| Knot
= a nautical unit of speed measurement equal to 1.15 MPH. |
| Map
Case = a waterproof bag made for maps. Freezer quality, Ziplock
type bags may do. |
| NAD,
North American Datum: Numbering system with in UTM. NAD 27 being
the older and NAD 83 the newer. |
| Nautical
Mile = the average distance on the Earth's surface represented
by one minute of latitude. |
| Northing:
The number used in UTM to define how far north or south the position
is. |
| Parallel
Rulers = two rulers, or rules, hinged so that they are always
parallel. |
| Pointer
= found on some hand compasses, turns with azimuth ring to align
with compass needle. |
| Protractor
= a graduated, semi circular instrument for plotting and measuring
angles. |
| Range
= Two fixed objects, one behind the other, in line with you
and your destination. |
| Scale:
The ratio of distance between the "real" distances on
the earth and the distance on the map. Example 1inch = 24,000 feet. |
| Topographical
Map = a detailed map for overland travel. |
| UTM
Grid Reader: A clear plastic sheet used to measure UTM coordinates
on a paper map. |
| UTM,
Universal Tranverse Mercator: The system used for creating coordinates
used with GPS and topo maps. Expressed as NAD 27 or NAD 83. |
| Waypoint:
A location defined by coordinates from a GPS or read from a map. |
