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Congratulations on choosing a Navman
fish-finder. For maximum benefit, please read this
manual carefully before installation and use.
This manual describes how to install and set
up the FISH 4432/4433 and the associated
dual-frequency transom transducer. (If a through
hull transducer is used, refer to the Installation
Instructions supplied with that transducer.)
This manual also explains how to operate
the FISH 4432/4433 effectively and provides
troubleshooting information and performance tips.
The FISH 4432/4433 is a high quality, dual-
frequency sonar fishfinder that is supplied
with a dual-frequency transducer. It uses a 16
level greyscale FSTN display for easy daylight
viewing that can be dimmed for night fishing.
The bracket mounting option also allows
the fishfinder to be tilted and swivelled for
optimum viewing.
The dual frequency capability enables the
FISH 4432/4433 to operate and display:
• At a high frequency of 200 kHz.
• At a low frequency of 83 kHz.
• Both frequencies side-by-side on a split
display.
• Both frequencies combined together into a
single display.
This capability, combined with a variable power
output of up to 250 watts, ensures that the FISH
4432/4433 operates effectively in shallow and
deep water.
The FISH 4432/4433 can detect the bottom to
a depth of 750 feet (230 metres) depending
on the clarity of the water, the ultrasonic
frequency chosen and the type of transducer
used.
The Navman fishfinder can be used to find
fish, to locate features on the bottom such as
reefs or wrecks and to help recognize favourite
fishing spots from the bottom profile.
The Navman fishfinder can also assist with
navigation by providing depth information to
1-1 Benefits of the FISH 4432/4433
Important
It is vital to the performance of the fishfinder
that the transducer is installed in the best
location. Please follow the installation
instructions very carefully.
help identify the depth contours marked on
charts. The FISH 4432/4433 is particularly suited
to work with the TRACKER 5430/5380.
The two instruments can be connected
together using either NavBus or NMEA, so they
can share data. (only applies to FISH 4433)
IMPORTANT NOTE ON USE. While any
fishfinder can be used as an aid to navigation,
accuracy can be limited by many factors,
including the location of the transducer. It is
the user’s responsibility to ensure the Navman
fishfinder is installed and used correctly.
With the optional fuel kit, the FISH 4433 also
becomes a sophisticated and easy-to-use
fuel computer.
All of the Navman 4000 Series fishfinders use
new proprietary SBN-II Technology for sonar
processing to improve Signal enhancement,
Bottom recognition and Noise rejection.
SBN-II Technology uses digital adaptive filter
algorithms to enhance all returned signals. At
the same time, SBN-II Technology uses active
noise control to reject interference, which
can often be mistaken by fishfinders for true
returns.
Using SBN-II Technology, the Navman
fishfinder analyses the reflections from each
pulse, filters false returns and displays what is
in the water under the boat. See section 4-1
Interpreting the display, for more information.
1 Introduction
FISH 4432/4433 Installation and Operation Manual 6
NAVMAN