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The different features of marine GPS units
One might think that a marine GPS unit be much the same as any other,
but this is not, in fact, the case. For a start marine navigation
requires that an entirely different kind of co-ordinate system is used
to refer to the location of the vessel than it is on land, which means
that marine GPS units need to be a little bit more versatile than the
land based versions. Add to this the fact that the maps are different
(actually, charts) and it is clear that shopping for one of these
devices is more complicated than one might first imagine.
The principle that drives marine GPS systems is; however, the same as
for the land faring versions. The device obtains a signal from each of
up to 12 satellites which enable it to triangulate its position using an
internal computer. Even more, the reception on the open sea is likely to
be better than on land – no hills or buildings, forests or anything else
to get in the way of the signals.
Some of the other features that we like to see in marine GPS units are
alarms to tell the sleeping mariner if the anchor is dragging during the
night, and also to help navigation whilst the boat is in motion. Such is
the danger of bad weather, then the system really needs to be able to be
operated without the skipper leaving the wheel.
Besides this, most marine GPS units will also be waterproof, and also
contain information about tides and even barometers to try and help
guess what the weather will be for the foreseeable future.
For more information on related products and services, please choose
from the following menu of items.
GPS
Maps /
Software
Tracking
About The Author:
Guy Lecky-Thompson is a successful author and publisher at
www.1st-at-gps-tracking.com. Recommending gps equipment and associated
products
04-07-04
