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1.
MOUNTING
1.1
Hull Unit
General mounting considerations
• Noise and air bubbles will affect performance.
• Keep the transducer away from oil. Oil can corrode the cable.
• Do not expose the transducer to hot water. Hot water can damage the transducer.
• Do not turn on the equipment with the transducer exposed to air. Exposing the
transducer to air may damage it.
Installation position considerations
Discussion and agreement are required with the dockyard and ship owner in deciding
the location for the hull unit. When deciding the location, take into account the follow-
ing points:
• Select an area where propeller noise, cruising noise, bubbles and interference from
turbulence are minimal. Generally, the point at 1/3 to 1/2 of the ship's length from
the bow or near the keel is the best. On-the-keel installation is advantageous for
minimizing oil consumption in comparison with off-the-keel. If the hull unit cannot be
installed on the keel, the center of the retraction tank should be within 1 meter of the
keel to prevent a rolling effect.
• Select a place where interference from the transducers of other sounding equip-
ment is minimal. The hull unit should be at least 2.5 meters away from the transduc-
ers of other sounding equipment.
• An obstacle in the fore direction not only causes a shadow zone but also aerated
water, resulting in poor sonar performance. Be sure to locate the transducer well
away from any obstacle in the fore direction.
NOTICE
Do not apply paint, anti-corrosive
sealant or contact spray to coating or
plastic parts of the equipment.
Those items contain organic solvents that
can damage coating and plastic parts,
especially plastic connectors.
1/2
1/3
Within 1 m
1-1
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