Kongsberg Simrad ST90, Reference Manual

Page: 513 / 690

442704/A
511
Tip
Retracting the transducer to a middle position may be useful if you use the ST90 system
simultaneously with other sonars. A higher position will permit you to increase the vessel
speed. If you operate in very shallow waters, you may also reduce the risk of hitting bottom.
However, placing the transducer immediately under the hull may increase the flow noise.
Caution
If the transducer hits larger objects or bottom, the transducer shaft may be bent, or - in
worst case - it can be broken off. A broken transducer shaft will cause water leakage
through the top of the shaft. If you suspect that the transducer shaft is seriously damaged
with holes, do not retract the transducer to its upper position.
To prevent serious damage to the vessel or the vessel stability, you must have a water
pump and a warning system in the sonar room.
Related topics
Getting started, page 80
Hull Unit, page 314
Functions and dialog boxes, page 416
Secondary functions and dialog boxes, page 494
New Marker dialog box
The
New Marker
dialog box allows you to create a new marker based on the known depth
and geographical position of a new target.
How to open
The
New Marker
dialog box is opened from the
New
button in the
Objects
menu.
Description
Use this functionality if you need to create a
marker based on geographical information from
an external source. You can place markers on for
example wrecks, obstacles on the seabed or coral
reefs. For each new marker you must provide:
• Longitude
• Latitude
• Depth
Functions and dialog boxes