The prudent mariner
will
never rely solely on any single means of
navigation.
He
will
always
use
whatever information
available.
The Global Positioning System
(GPS)
is
developed and operated by
the United States Department
of
Defense (DOD).
Only part of the
system
is
available
for
civil applications.
The
expected position accuracy
is
better than
100
meters for
95
percent
of
the time; but may be up
to
300
meters occasionally. The derived
speed
and
course readings may
be
hampered
accordingly.
The availability and precision
will
be
kept within the stated
limits
as
far
as
the
military
and
political situation
allows.
The
MK8
and
MK9
are
prepared for direct connection
to
a
DGPS
Beacon Receiver
(Philips
PBR
1000).
The
MK8
will for this purpose
need
a
DGPS
software upgrade and a new interface cable allowing
data
input. The position accuracy
is
hereby improved to better than
5
meters
for
95%
of
the time subject to availability
of
DGPS
transmissions
from
public Radio Beacons.
Please
note that
a
position obtained from a chart
is
not always
as
accurate
as
your na~~~ator, and
that
the
position of
a
f~o~t~n~
ai
rift. In addition the
itions
such
as
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