Kongsberg EM 2040 MKII, Installation Manual

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vertical and horizontal distances from a single reference point; the origin. The physical
location of the motion reference unit (MRU) is often the most important sensor to define.
For many systems, the vessel heading is also a critical measurement.
In this example, a second
reference point has been
established. It is defined with
three positive offset values
for X, Y and Z. All values
are positive because the new
reference point is in front of
and below the origin, and on
the starboard side.
The accuracy of the three numerical values for X, Y and Z defines the accuracy of the
sensor data.
Important
If you require a high accuracy, for example for underwater positioning, underwater
mapping or scientific measurements, you must have each sensor positioned. This
requires professional surveying done by qualified and trained personnel using proven
equipment and methods for maritime dimensional surveying. We recommend that you
use third-party consultants with well proven experience with vessel dimensional control.
Dimensional surveying and alignment