Magellan Map 410 User Manual page 64

Instead of projecting an imaginary grid of intersecting lines onto the globe,
UTM projects sections of the globe onto a flat surface. Each of these
sections is called a "zone." There are 60 zones to cover the entire earth
between 84 N and 80 S (polar areas are not described by UTM). Each zone
is 6 wide as projected from the earth's center.
A UTM position is described by three elements; the zone it is in, the easting,
and the northing. Eastings and northings measure how far into a zone a
position is in meters. Eastings are an east/west measurement, and correspond
roughly to longitude. Northings are a north/south measurement, and
correspond to latitude.
180 150 120
1 2 3 4 5 6 7 8 9 10
0
3000 Km
3000 Mi.
Scale at the Equator.
NOTE: The area described by the UTM coordinate system extends to 84 N and to 80 S.
This chart shows the position of Magellan described in both LAT/LON and
UTM coordinates.
DEG/MIN.MM
34 06.58N
117 49.56W
Time Delay Grids (TD). These are lines of position (LOPs) that are
determined by the difference in length of time required to receive the Loran-
C signals. Loran is a radio navigation aid and TD coordinates are clearly
marked on nautical charts. Our marine GPS units can display position
coordinates in TDs by converting from position fixes calculated in LAT/
LON. (No measurements are being made using Loran signals).
56
90 60 30
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
LAT/LON
DEG/MIN/SEC
34 06'35"N
117 49'34"W
0 30 60
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
11 4 23 818 E
37 74 624 N
Magellan MAP 410 GPS Receiver
90 120 150 180
45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
UTM