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SPECIAL TURNS
When the autopilot is in the PILOT mode, pressing the TURN key followed by either
the red or green ARROW key initiates the PRE-SELECTED type of special turn.
EMERGENCY TURN
The Emergency Turn is selected by
placing the autopilot in the STANDBY
mode, pressing the TURN key, followed
by either the red or green ARROW key
until the display shows 'E.trn'. This turn is
sometimes called the 'man overboard
turn' or 'Williamson turn'. If the vessel's
speed and turn rate are not changed
while the turn is in progress, the autopilot
will bring the vessel about in such a way
that it retraces its own path in the water.
An Emergency Turn to port is
initiated by placing the
autopilot in the PILOT mode and
pressing the TURN key followed by the
red ARROW key. The autopilot will make
a 90-degree turn to port. When that turn is
complete, the autopilot will automatically
make a 270-degree turn to starboard. The
function indicator will change to an 'E'
until both turns are complete. When the
second turn is complete, the vessel
should be retracing its own track in the
water. Pressing the TURN key followed
by the green ARROW key does the same
thing only the first 90 degree turn is to
starboard, and the second 270 degree
turn is to port. The speed at which the
turns are performed is set by the Turn
Rate control, and should not be changed
during the turn (otherwise the vessel will
not end up on its own track).
CONTINUOUS TURN
The Continuous Turn is selected by
placing the autopilot in the STANDBY
mode, pressing the TURN key, followed
by either the red or green ARROW key
until the display shows 'C.trn'.
A Continuous Turn to port is
initiated by placing the
autopilot in the PILOT mode
and pressing the TURN key followed by
the red ARROW key. The vessel will turn
at the rate determined by the Turn Rate
control and will continue to turn until either
the red or green ARROW key is pressed.
The function indicator will show a 'C' until
the turn is stopped. The vessel will then
travel in the direction indicated on the
display. Pressing the TURN key followed
by the green ARROW key will start a
similar turn to starboard.
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