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Simrad ST90 Technical specifications
Additional required and optional items
Topics
Installation trunk requirement, page 20
Speed log requirement, page 21
Course gyro requirement, page 21
Uninterruptible power supply (UPS) requirement, page 21
Operating Panel option, page 22
Global positioning system (GPS) option, page 22
Installation trunk requirement
An installation trunk is required for hull unit installation. The installation trunk is not
included in the standard delivery.
The installation trunk provides the physical foundation for the entire hull unit. The
installation trunk penetrates the hull. The installation trunk is therefore a crucial part
of the hull unit assembly. In order to ensure proper operation of the ST90 system, the
physical location of the installation trunk must be carefully selected.
The installation trunk - with a blind flange - can be ordered from Kongsberg Maritime as
an optional delivery. As an alternative, the installation trunk can be manufactured by the
shipyard based on the drawings in this manual. A locally manufactured installation trunk
can be adjusted to better fit the properties of the vessel's hull.
Note
If the installation trunk is manufactured locally, the installation shipyard is responsible
for obtaining the approval certificates from the relevant national registry.
The installation trunk is not used when a gate valve is mounted. The installation trunk
is then replaced with a transducer dock.
20
110-0035138/A
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