18
2. Press LOCK to advance to the manual linearisation display. The
magnetic North indicators rotate to indicate that you are in
linearisation mode.
LOCK
N
N
N
HEADING
N
N
N
N
AVERAGE
N
Cal
LOCK
3. With a boat speed around 2 knots, start turning your vessel in a
very slow circle.
Please note...
If you turn your vessel too quickly the display changes to read SLO and the
buzzer sounds.
4. Keeping turning your vessel until the display begins to alternate
between the heading and deviation displays and the magnetic North
indicators stop rotating.
LOCK
N
N
N
HEADING
N
N
N
N
AVERAGE
N
LOCK
ST30 Compass Installation and Operation Handbook
COMPASS
D919-1
Cal
COMPASS