Kongsberg Simrad SN90 Reference Manual page 218

Simrad SN90 Reference Manual
• : 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.
Tip
It is common practice to 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.
If you do not have a motion sensor you can place the Ship Origin at any location on the
vessel. We suggest that you place the origin under the captain's seat on the bridge. All
sensors will then be referenced to this position. Whenever a sonar is used with short
ranges, this will provide a more precise presentation.
Procedure
1 Open the
Setup
2 On the menu, select
Setup
Observe that the
of pages selected from the menu on the left side.
3 On the left side of the
Installation Parameters
Observe that a menu opens with access to all the individual pages.
4 Open the page.
Ship
5 Insert the physical dimensions of your vessel (length and width).
Do this as accurately as possible. This information is used to create a new origin in
the vessel coordinate system.
6 Offset:
a If you want to keep the default reference point (origin), leave all offset values
to 0 (zero).
b If you want to move the reference point to another location, use the necessary
offset values.
To find these offset values, consult the vessel drawings. Do this as accurately
as possible.
7 At the bottom of the page, select
8 Continue your work in the
216
menu.
Installation
dialog box opens. This dialog box contains a number
Installation
dialog box, select the small white triangle next to
Installation
.
Apply
Installation
.
to save your settings.
dialog box, or select to close it.
OK
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