<s>
Satellite	B-Application
navigation	I-Application
software	I-Application
or	O
GPS	B-Application
navigation	I-Application
software	I-Application
usually	O
falls	O
into	O
one	O
of	O
the	O
following	O
two	O
categories	O
:	O
</s>
<s>
This	O
type	O
can	O
also	O
be	O
used	O
for	O
geocaching	B-Application
.	O
</s>
<s>
Software	O
can	O
be	O
used	O
on	O
a	O
laptop	B-Device
computer	I-Device
with	O
an	O
attached	O
GPS	O
receiver	O
.	O
</s>
<s>
Most	O
commercial	O
software	O
runs	O
on	O
Windows	B-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
and	O
Linux	B-Application
.	O
</s>
<s>
Some	O
software	O
like	O
Waze	B-Application
and	O
Google	B-Application
Maps	I-Application
can	O
also	O
be	O
used	O
on	O
mobile	O
phone	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
There	O
are	O
several	O
navigation	B-Application
software	I-Application
products	O
available	O
.	O
</s>
<s>
Navigation	B-Application
software	I-Application
for	O
use	O
on	O
the	O
water	O
has	O
many	O
features	O
in	O
common	O
with	O
land-based	O
GPS	B-Application
navigation	I-Application
software	I-Application
.	O
</s>
<s>
In	O
addition	O
,	O
marine	O
navigation	B-Application
software	I-Application
often	O
has	O
option	O
to	O
control	O
external	O
autopilot	O
for	O
automated	O
boat	O
navigation	O
.	O
</s>
<s>
It	O
may	O
incorporate	O
GRIB	B-Application
weather	O
overlay	O
on	O
the	O
chart	O
,	O
Tide	O
predictions	O
and	O
other	O
related	O
information	O
services	O
of	O
additional	O
use	O
to	O
mariners	O
.	O
</s>
<s>
This	O
kind	O
of	O
software	O
usually	O
creates	O
a	O
modern	O
glass	B-Device
cockpit	I-Device
and	O
uses	O
more	O
than	O
just	O
a	O
single	O
GPS	O
sensor	O
to	O
assist	O
the	O
navigation	O
.	O
</s>
<s>
Such	O
sensors	O
are	O
Attitude	B-Device
and	I-Device
Heading	I-Device
Reference	I-Device
Systems	I-Device
(	O
AHRS	B-Device
)	O
and	O
Inertial	O
Measurement	O
Unit	O
(	O
IMU	O
)	O
sensors	O
.	O
</s>
