Simrad SP70
4
850--164186 A
The Hull Unit is designed to be lowered 1.2 meters below the
ship’s hull at a maximum ship’s speed of 15 knots, and it uses less
than 25 seconds for raising and lowering the transducer. The
transducer can also be lowered to a middle position, where only
half of the transducer face is outside the sonar trunk. Note, that
in case of voltage failure, the Hull Unit can be manually raised or
lowered by a hand crank.
The spherical 240 elements transducer allows the sonar beam to
be trained and tilted electronically in any direction. This gives
unlimited possibilities for automatic tracking of schools of fish
and for displaying the whole water volume around and belowthe
vessel.
The optional sensor for the electronic stabilization of the sonar
beams is housed in the motor control unit which is mounted on
the Hull Unit.
WARNING ! If the transducer hits larger objects or bottom, the transducer
shaft m ay be bent, or in worst case it can be broken off. A
broken transducer shaft will cause water leakage in the top of
the shaft. To prevent larger leakages in such a case, do not
raise
the transducer shaft to the upper position. To prevent serious
damages it is therefore of great importance to have a good
pump and warning system in the sonar room.
1.3 Options
General
The standard SP70 sonar is a single 26kHz version with 60_
tilt. With the limitation of 60_ tilt, the sonar is most useful
for purse seiners searching for fish in the upper water layers.
This because the standard version do not include the 90° and
180° vertical slice presentations. All display modes are
described in section; “Modes of operation”.
Note that all options are pre-programmed into the standard
version, where a code word is used to make the actual option
operable. Simrad offer a 1-month free test period for each option.
→ For entering the code words, refer to the section; “Option
installation”.
For a permanent option installation, a new code word will be
released when ordering the actual option.
Optional 90_ tilt
The optional 90_ tilt version is specially powerful for trawlers, but
is also very popular for purse seiners. This because in this version
all the 180° vertical modes available.
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