Accu-Fish; How To Set Accu-Fish - Furuno NavNet TZtouch3 Series Operator's Manual

7. FISH FINDER (SOUNDER)
7.14

ACCU-FISH

The ACCU-FISH
Appendix 3 for compatible transducers), Bottom Discrimination Sounder BBDS1 or
Network Fish Finder DFF series, calculates the length of each fish and shows a fish
symbol and depth value or fish length.
Usage guidelines
• The information provided by this feature is intended for reference only. It does not in-
dicate the exact length of a fish.
• ACCU-FISH
• The intensity of an echo depends on fish species. If the indicated length is different
from the true length, you can apply an offset. See section 7.14.2.
• Two frequencies are transmitted alternately without reference to the current display
mode.
• Use this feature with ship speed of 10 knots or less and depth between 2 and 100 m.
• This feature cannot be used with the inside-hull transducer since a fish may not be
detected depending on the frequency of the transducer. Even if a fish is detected, the
fish length indicated may be smaller than the actual length.
• ACCU-FISH
gardless of the frequency mode in use.
• Echoes from a school of fish can be in more than one layer, which can cause wrong
length indication.
• The fish symbol indication is not shown when the bottom echo is not shown on the
screen.
• The split range feature is inoperative when ACCU-FISH
7.14.1

How to set ACCU-FISH

1. Open the Home screen, then tap [Settings] →[Fish Finder].
2. Tap [ACCU-FISH Info].
3. Tap [Fish Size] or [Depth]. Tap [<] on the title bar to go back one layer in the menu.
[Fish Size]: Show length of fish.
[Depth]: Show depth of fish.
4. Tap [ACCU-FISH Symbols].
5. Tap [Solid], [Striped] or [Off] (turn off fish symbol).
Solid
(small)
154 ft
Large fish symbol (more than 51 cm (20.08 inch))
Small fish symbol (10 to 50 cm (3.9. to 19.69 inch))
6. Tap the close button on the title bar to finish.
7-16
™
™
feature, which requires an ACCU-FISH
™
is available for use on both the high and low frequencies.
™
uses both low and high frequency echoes for the measurements re-
™
Solid Striped
(large) (small)
237 ft 154 ft
Fish size
™
™
is on.
Striped
(large)
237 ft
Depth (or Fish Size)
Solid
capable transducer (see
Striped