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Ship page
Use the
page to define a specific reference point (Ship Origin or origo) for the
Ship
various sensors connected to the SN90 system. The origin is the common reference
point where all three axis in the vessel coordinate system meet. All physical locations
of the vessel's sensors (radar and positioning system antennas, echo sounder and sonar
transducers, motion reference units, etc.) are referenced to the origin.
Description
Use the
page with the ship's physical dimensions to create a virtual reference point
Ship
(the Ship Origin) in a dedicated coordinate system for the SN90 system. The Ship Origin
is normally located in the following position:
•
: Half the ship's length
X position
•
: Half the ship's width
Y position
•
: On the waterline
Z position
If you want to change the location of the Ship Origin, you can do this by providing offset
values in the X, Y and/or Z directions. To do this you will need the ship drawings.
Note
We recommend that you place the Ship Origin at the same position as the motion
reference unit (MRU). This will minimize the vectors when your vessel is moving. Use
the vessel drawings to establish the offset values between the basic position of the Ship
Origin and the MRU location.
Details
X Offset
Select the offset value on
the X axis (fore-and-aft
direction) from the
default Ship Origin. This
is the origin that was
defined by the vessel
designer and/or the
shipyard when the vessel
was built. Adjust with a
positive value for X if your new preferred origin is located ahead of the default
Ship Origin.
Y Offset
Select the offset value on the Y axis (athwartship) from the default Ship Origin.
This is the origin that was defined by the vessel designer and/or the shipyard when
the vessel was built. Adjust with a positive value for Y if your new preferred origin
is located on the starboard side of the default Ship Origin.
381294/E
Functions and dialog boxes
575
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