Raymarine ST60+ - Glossary

Chapter 4: Calibration 37
Before you attempt to change the value of the depth offset, you need to know the
vertical separation between the transducer position and:
• The bottom of the keel. This requires a negative offset.
• The water line. This requires a positive offset.
Setting depth offset
Use the track (decrement) and reset (increment) buttons to set the required
offset value:
• If you want to display the actual depth reading from the transducer, set a
value of 0.0.
•If you want to apply a WATERLINE offset, set an appropriate POSITIVE value.
If you want to apply a KEEL offset, set an appropriate NEGATIVE value.
Note: The maximum adjustment for depth offset is plus and minus 10 feet (or equivalent).
WARNING: Use the correct depth offset
The use of the correct depth offset is critical to the safety of the
vessel. If an incorrect offset value is applied, this could result in
misleading depth information being displayed with a
consequent risk of running aground. Take great care to ensure
you set the correct value.
Offset = 0.0
+ve offset
values
ve offset
values
D4352-3
Depth offsets
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81268_3.book Page 37 Tuesday, August 1, 2006 8:05 AM