Sonic KCS-3500, Operation Manual

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iii
Safety of the hoist unit
・
Ship speed resistance
When using the hoisting device, be sure not to exceed the following ship speed resistance of
the hoisting device. When used in excess of the ship speed resistance, the hoisting device
may be damaged and cause an accident.
Ascent 15 knots or less Hoisting
operation Descent 15 knots or
less
ship speed
resistance 16 knots
・ Change electrolytic corrosion-preventing zinc plates annually.
Be sure to perform electrolytic corrosion prevention. If electrolytic corrosion prevention is
not performed, the transducer may fall accidentally or there may be an influx of seawater into
a dome, in the worst case.
For the transducer
The transducer of this sonar system is filled with castor oil inside. This castor oil may steep
from the transducer cable due to outside temperature change, but it does not affect the
performance.
For preventing damage at sea
When the transducer or the hoisting device is damaged at sea, the sonar system can not be
used, accordingly, the operation or safe navigation is sometimes hindered. Furthermore, it
takes a large amount of time and cost to exchange and repair the transducer or the hoisting
device.
In order to prevent these accidents from occurring, store the transducer by performing the
following operations when conditions are as described below.
1.Condition
1) Sea condition with many float and drift
2) The case of getting out of an encircling net by a lightship of round haul netter fleet
3) A shallow place where ropes or wires are set up under seas
4) During an anchorage of a ship