Depth Units; Depth Offset - Raymarine ST60 Owner's Handbook Manual

Chapter 4: Calibration

Depth units

You can set the units in which depth information is displayed to be
either FEET, FATHOMS or METRES.

Depth offset

Depths are measured from the transducer to the sea bed. However, you
can use the depth offset screen to apply offsets to this distance, so that
the displayed depth reading represents either the depth from the keel or
the depth from the water line (W/L). In order to do this, 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.
The legend at the top of the Depth offset screen reflects the value you
set up, i.e. W/L for positive offsets, KEEL for negative offsets and OFFSET
for zero offset.
W/L
(+ve offset
values)
Depth offsets
OFFSET KEEL
(offset value (-ve offset
of 0.0) values)
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