1. Have a
good working knowledge of charts, including the projection, datum and
symbols used and the tidal information given.
2. Display
an aptitude in compasses by completing the following three activities:
a. Read a
mariner's compass marked in points and degrees and have a knowledge of
compasses generally, including variation and deviation.
b. Be able
to apply variation and deviation to a compass course or bearing to obtain a
true reading. Give a true reading to obtain a compass course.
c.
Understand how compass error can be found from a transit bearing.
3. Complete
the following four activities:
a.
Understand the theory of how a position may be found from any two position
lines.
b. Plot a
position from any three cross bearings. Understand what is meant by a
'cocked hat' and how to use it safely.
c. Plot a
position using the 'running fix' method.
d. Plot a
position using a combination of compass bearings and any one or more of the
following:
·
Decca or satellite navigation system
·
Vertical sextant angle
·
Horizontal sextant angle
·
Line of soundings
·
Transits.
4. Have a
working knowledge of tide tables and tidal stream atlases.
5.
Understand the use of the marine log to obtain distance, run and speed.
6.
Understand the buoyage system for United Kingdom coastal waters and other
methods of marking dangers and channels.
7.
Undertake a coastal voyage of between four and six hours acting as
navigator. A log must be kept showing the courses steered, distance run,
navigation marks passed and weather experienced. During the voyage:
·
plot the estimated position every hour by keeping up the dead reckoning.
·
whenever appropriate, and not less than once per hour, plot an observed
position by bearings or other means of obtaining a fix.
The voyage, which need not have a definite destination, should be planned on
the chart beforehand using tidal streams to the best advantage and giving
hourly courses to steer for an assumed speed.
8.
Demonstrate their awareness of the latest developments in electronic
technology such as the Global Positioning System