Humminbird 383c User manual

383c GPS Chartplotter
Operations Manual
383c GPS Chartplotter
Operations Manual
531450-1_F
Guide d'utilisation du
traceur graphique GPS 383c
Guide d'utilisation du
traceur graphique GPS 383c
531450-1_F

Thank You!
Thank you for choosing Humminbird®, America's #1 name in fishfinders.
Humminbird® has built its reputation by designing and manufacturing top-quality,
thoroughlyreliablemarineequipment.YourHumminbird®isdesignedfortrouble-free
use in even the harshest marine environment. In the unlikely event that your
Humminbird® doesrequirerepairs,weofferanexclusiveServicePolicy-freeofcharge
during the first year after purchase, and available at a reasonable rate after the
one-year period. For complete details, see the separate warranty card included with
your unit. We encourage you to read this operations manual carefully in order to get
full benefit from all the features and applications of your Humminbird® product.
Contact our Customer Resource Center at either 1-800-633-1468 or visit our website
at www.humminbird.c m.
WARNING! Thi device hould not be u ed a a navigational aid to prevent colli ion,
grounding, boat damage, or per onal injury. When the boat i moving, water depth
may change too quickly to allow time for you to react. Alway operate the boat at very
low peed if you u pect hallow water or ubmerged object .
WARNING! Di a embly and repair of thi electronic unit hould only be performed by
authorized ervice per onnel. Any modification of the erial number or attempt to
repair the original equipment or acce orie by unauthorized individual will void the
warranty.
WARNING! Thi product contain chemical known to the State of California to cau e
cancer and/or reproductive harm.
DualBeam PLUSTM, Fish ID+TM, Fishing GPS®, Humminbird®, HumminbirdPCTM, RTS® Window, Selective
Fish ID+TM, WhiteLine®, WideSide®, -PressTM Menu, and Structure ID® are trademarked by or registered
trademarks of Humminbird®.
© 2009 Humminbird®, Eufaula AL, USA. All rights reserved.
ATTENTION INTERNATIONAL CUSTOMERS: Products sold in the U.S. are not intended for
use in the international market. Humminbird® international units provide international
features and are designed to meet country and regional regulations. Languages, maps,
time zones, units of measurement, and warranty are examples of features that are
customized for Humminbird® international units purchased through our authorized
international distributors.
To obtain a list of authorized international distributors, please visit our web site at
www.humminbird.c m or contact our Customer Resource Center at [phone].
Merci !
Merci d'avoir choisi Humminbird®, le chef de file dans le secteur des sondeurs de poissons
aux États-Unis. Humminbird® a bâti sa réputation en créant et en fabriquant des
équipements marins de haute qualité et très fiables. Votre appareil Humminbird® a été
conçu pour pouvoir être utilisé sans problèmes, quelles que soient les conditions, même
dans les milieux marins les plus hostiles. Dans l'éventualité peu probable où votre appareil
Humminbird® aurait besoin de réparations, nous offrons une garantie pièces et main
d'œuvre exclusive - gratuite pendant la première année, et disponible à un taux
raisonnable après la période initiale d'un an. Pour plus de détails, voir le bon de garantie de
votre système. Nous vous invitons à lire attentivement ce Manuel de l'utilisateur, afin de
profiter pleinement de toutes les fonctions et applications de votre produit Humminbird®.
Communiquez avec notre Centre de ressources pour la clientèle au 1-800-633-1468 ou
visitez notre site Web www.humminbird.c m.
AVERTISSEMENT ! Cet appareil ne devrait en aucun ca être utili é comme in trument de
navigation afin de prévenir le colli ion , l'échouage, le dommage au bateau ou le
ble ure aux pa ager . Lor que le bateau e t en mouvement, la profondeur de l'eau peut
varier trop rapidement pour vou lai er le temp de réagir. Avancez toujour trè lente-
ment i vou oupçonnez la pré ence de ba fond ou d'ob tacle ubmergé .
AVERTISSEMENT ! La réparation et/ou le démontage de cet appareil électronique doit être
effectué uniquement par un per onnel d'entretien autori é. Toute modification du numéro
de érie et/ou réparation par un per onnel non autori é entraînera l'annulation de la
garantie.
AVERTISSEMENT ! Ce produit contient de produit chimique reconnu par l'état de la
Californie comme pouvant cau er le cancer et/ou d'autre toxicité reproductive .
© 2009 Humminbird®, USA. Tous droits réservés.
À L’ATTENTION DE NOS CLIENTS INTERNATIONAUX : Les produits vendus aux États-Unis
ne sont pas destinés à être utilisés sur le marché international. Les appareils interna-
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mément aux réglementations régionales et nationales en vigueur. Les langues, cartes,
fuseaux horaires, unités de mesure et garantie illustrent les fonctions qui sont personnal-
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internationaux agréés.
Pour obtenir la liste des distributeurs internationaux agréés, veuillez visiter notre site Web
www.humminbird.c m, ou contactez notre Centrederessources clientèle au [phone].
i
i

ii
How Sonar Works 1
DualBeamPLUS™Sonar ............................................................. 3
How GPS and Cartography Work 3
What’s On the Display 5
Views 7
SonarView.......................................................................... 8
UnderstandingSonarHistory........................................................ 9
RealTimeSonar(RTS®)Window..................................................... 9
FreezeFrame....................................................................... 10
BottomPresentation ............................................................... 10
SonarZoomView................................................................... 12
200/83kHzSplitSonarView ....................................................... 13
BigDigitsView..................................................................... 14
CircularFlasherView................................................................ 14
Bird's yeView...................................................................... 15
ChartView ......................................................................... 16
ComboView........................................................................ 17
ViewOrientation ................................................................... 17
Viewing Cartography 18
Introduction to Navigation 18
Waypoints,RoutesandTracks...................................................... 19
Save, ditorDeleteaWaypoint .................................................... 20
NavigatetoaWaypointorPosition................................................. 21
AddaWaypointTargetorTrollingGrid............................................. 22
Save, ditorDeleteaRoute......................................................... 23
SaveorClearaCurrentTrack ....................................................... 24
dit,DeleteorHideSavedTracks................................................... 24
Key Functions 25
POW R/LIGHTKey................................................................. 25
VI WKey .......................................................................... 25
INFOKey........................................................................... 25
Table of Contents

M NUKey ......................................................................... 26
4-WAYCursorControlKey.......................................................... 26
MARKKey.......................................................................... 27
GOTOKey.......................................................................... 27
ZOOM(+/-)Key .................................................................... 27
XITKey ........................................................................... 27
Powering Up the Unit 28
The Menu System 28
Start-Up Options Menu 31
NormalOperation.................................................................. 31
Simulator ......................................................................... 32
SystemStatus...................................................................... 32
SelfTest............................................................................ 33
AccessoryTest...................................................................... 33
GPSDiagnosticView ............................................................... 34
Sonar X-Press™ Menu (Sonar vi ws only) 35
Sensitivity ......................................................................... 36
Upper Range
(Advanced: Sonar, Split Sonar, Big Digits and Circular Flasher views only) ......... 37
LowerRange ....................................................................... 38
ChartSpeed........................................................................ 39
Bottom Range
(Sonar Zoom view only when Bottom Lock is On) ............................ 39
Bottom Lock
(Sonar Zoom view only) ................................................... 40
Cancel Navigation
(only when navigating) ............................................. 40
Navigation X-Press™ Menu (Navigation vi ws only) 41
Waypoint [Name] (Only with an active cursor on a waypoint) ............................. 42
Cursor To Waypoint
(Chart or Combo view only) ........................................ 43
SaveCurrentTrack ................................................................. 43
ClearCurrentTrack................................................................. 43
Save Current Route
(only when navigating) ............................................ 44
Skip Next Waypoint
(only when navigating) ........................................... 44
Cancel Navigation
(only when navigating) ............................................. 45
Remove Target
(only if Target is Active) ................................................ 45
Table of Contents
iii

iv
Remove Grid (only if Grid is Active) .................................................... 46
Sonar Window
(Combo view only) ..................................................... 46
Waypoint [Name]
(Most recently-created waypoint) ..................................... 47
Sonar Menu Ta 48
BeamSelect ....................................................................... 49
Fish ID+TM .......................................................................... 50
FishIDSensitivity................................................................... 51
RealTimeSonar(RTS®)Window.................................................... 51
BottomView....................................................................... 52
ZoomWidth........................................................................ 52
83 kHz Sensitivity
(Advanced) ........................................................ 53
Depth Lines
(Advanced) .............................................................. 54
Surface Clutter
(Advanced) ........................................................... 55
Noise Filter
(Advanced) ............................................................... 56
Max Depth
(Advanced) ............................................................... 56
Water Type
(Advanced) ............................................................... 57
Navigation Menu Ta 58
CurrentTrack....................................................................... 59
SavedTracks....................................................................... 60
Waypoints.......................................................................... 61
Routes ............................................................................. 62
ChartOrientation................................................................... 63
NorthReference.................................................................... 63
GridRotation....................................................................... 63
TrackpointInterval................................................................. 64
Track Min Distance
(Advanced) ....................................................... 64
Map Datum
(Advanced) .............................................................. 65
CourseProjectionLine.............................................................. 65
Delete All Nav Data
(Advanced) ...................................................... 65
Table of Contents

v
Chart Menu Ta 66
ChartDetailLevel................................................................... 67
MapBorders ....................................................................... 67
Lat/LonGrid ....................................................................... 68
Set Simulation Position
(Advanced) .................................................. 68
Set Map Offset
(Advanced) ........................................................... 69
Clear Map Offset
(Advanced) ......................................................... 69
Alarms Menu Ta 70
DepthAlarm........................................................................ 71
FishIDAlarm....................................................................... 71
LowBatteryAlarm.................................................................. 72
TempAlarm........................................................................ 72
OffCourseAlarm................................................................... 73
ArrivalAlarm....................................................................... 73
DriftAlarm......................................................................... 74
AlarmTone......................................................................... 74
Setup Menu Ta 75
Units-Depth....................................................................... 76
Units - Temp
(International only) ...................................................... 76
Units-Distance..................................................................... 76
Units-Speed....................................................................... 77
UserMode ......................................................................... 77
Language
(International only) ......................................................... 77
TriplogReset....................................................................... 78
RestoreDefaults.................................................................... 78
Select Readouts
(Advanced, Sonar view only) ............................................ 79
Depth Offset
(Advanced) ............................................................. 80
Temp Offset
(Advanced) .............................................................. 81
Speed Calibration
(Advanced, with Temp/Speed only) .................................... 81
Local Time Zone
(Advanced) .......................................................... 82
Daylight Saving Time
(Advanced) ..................................................... 82
Position Format
(Advanced) .......................................................... 83
Table of Contents

vi
T me Format (Advanced, International only) ............................................. 83
Date Format
(Advanced, International only) ............................................. 84
NMEA Output
(Advanced) ............................................................ 85
Sonar .............................................................................. 86
View Menu Tab 87
Trouble hooting 87
300Seres™Doesn’tPowerUp..................................................... 87
300 Ser es™ Defaults to S mulator w th a Transducer Attached . . . . . . . . . . . . . . . . . . . . . 87
DsplayProblems................................................................... 88
FndngtheCauseofNose......................................................... 89
Specification 90
Glo ary 92
Contact Humminbird® 106
NOTE: Entries in this able of Contents which list (International Only) are only available on
products sold outside of the U.S. by our authorized international distributors. o obtain a list
of authorized international distributors, please visit our web site at .humminbird.com
or contact our Customer Resource Center at [phone].
NOTE:Entries inthis ableofContentswhichlist (with emp/Speedonly)require thepurchase
of separate accessories. You can visit our website at .humminbird.com to order these
accessories online or contact our Customer Resource Center at 1-800-633-1468.
Table of Contents

1
How Sonar Works
Sonartechnologyisbasedon sound waves.The300 Series™FishingSystemuses sonar
to locate and define structure, bottom contour and composition, as well as depth
directly below the transducer.
Your 300 Series™ Fishing System sends a sound wave signal and determines distance
by measuring the time between the transmission of the sound wave and when the
sound wave is reflected off of an object; it then uses the reflected signal to interpret
location, size, and composition of an object.
Sonar is very fast. A sound wave can travel from the surface to a depth of 240 ft
(70 m) and back again in less than 1/4 of a second. It is unlikely that your boat can
"outrun" this sonar signal.
SONAR is an acronym for SOund and NAvigation
Ranging. Sonar utilizes precision sound pulses or
"pings" which are emitted into the water in a teardrop-
shaped beam.
The sound pulses "echo" back from objects in the water
such as the bottom, fish and other submerged objects.
The returned echoes are displayed on the LCD screen.
ach time a new echo is received, the old echoes are
moved across the LCD, creating a scrolling effect.
When all the echoes are viewed side by side, an easy to
interpret "graph" of the bottom, fish and structure
appears.

2
The sound pulses are transmitted at various frequencies
depending on the application. Very high frequencies
(455 kHz) are used for greatest definition but the
operating depth is limited. High frequencies (200 kHz)
are commonly used on consumer sonar and provide a
good balance between depth performance and
resolution. Low frequencies (83 kHz) are typically used
to achieve greater depth capability.
The power output is the amount of energy generated
by the sonar transmitter. It is commonly measured
using two methods:
•Root ean Square (R S) measures power
output over the entire transmit cycle.
• Peak to Peak measures power output at the
highest points.
The benefits of increased power output are the
ability to detect smaller targets at greater distances,
ability to overcome noise, better high speed
performance and enhanced depth capability.

3
DualBeam PLUS™ Sonar
Your 300 Series™ Fishing System uses a 200/83 kHz
DualBeam PLUS™ sonar system with a wide (60°) area
of coverage. DualBeam PLUS™ sonar has a narrowly
focused 20° center beam, surrounded by a second beam
of 60°, expanding your coverage to an area equal to
your depth. In 20 feet of water, the wider beam covers
an area 20 feet wide. DualBeam PLUS™ sonar returns
can be blended together, viewed separately or
compared side-by-side. DualBeam PLUS™ is ideal for a
wide range of conditions -from shallow to very deep
water in both fresh and salt water. Depth capability
is affected by such factors as boat speed, wave
action, bottom hardness, water conditions and
transducer installation.
How GPS and Cartography Work
Your300Series™ FishingSystemalsosupports GPSandchartplotting,anduses GPSand
sonar to determine your position, display it on a grid, and provide detailed underwater
information. The Global Positioning System (GPS) is a satellite navigation system
designed and maintained by the U.S. Department of Defense. GPS was originally
intended for military use; however, civilians may also take advantage of its highly
accurate position capabilities, typically within +/- 10 meters, depending on conditions.
This means that 95% of the time, the GPS receiver will read a location within 10 meters
of your actual position. Your GPS Receiver also uses information from WAAS (the Wide
Area Augmentation System), GNOS (the uropean Geostationary Navigation Overlay
Service), and MSAS (the MTSAT Satellite Augmentation System) satellites if they are
available in your area.

GPS uses a constellation of 24 satellites that continually
send radio signals to the earth. Your present position is
determined by receiving signals from up to 16 satellites
and measuring the distance from the satellites.
All satellites broadcast a uniquely coded signal once per
second at exactly the same time. The GPS receiver on
your boat receives signals from satellites that are visible
to it. Based on time differences between each received
signal, the GPS receiver determines its distance to each
satellite. With distances known, the GPS receiver
mathematically triangulates its own position. With
once per second updates, the GPS receiver then
calculates its velocity and bearing.
The GPSReceiverincludedwithyour300 Series™FishingSystem, allowsyoutocombine
easy-to-use FishingGPS™ chartplotter and navigation capabilities with advanced
fishfinding. The following GPS functionality is currently supported by the 300 Series™
Fishing System:
• View current position
• View current track (breadcrumb trail)
• View precision speed and heading from your GPS receiver
• Save tracks, waypoints and routes
• Travel a route and navigate from one waypoint to the next.
Your unit also comes with a built-in UniMap™ with a more detailed map of North
America (Domestic models) or a more detailed map of urope and Southeast Asia,
including Australia and New Zealand (International models).
Your 300 Series™ uses the GPS Receiver to determine the position of the boat
automatically, and uses the zoom level settings on a particular view to select the best
chart to display. See Viewing Cartography for more information.
4

What’s On the Display
The 300 Series™ Fishing System can display a variety of useful information about the area
Depth - water depth; can be set to alarm when
the water becomes too shallow.
Temperature - water surface temperature.
Timer - lapsed time with Temp/Speed
Accessory or GPS Receiver.
Distance - Distance traveled with Temp/Speed
Accessory or GPS Receiver.
Average Speed - Average speed reading with
Temp/Speed Accessory or GPS Receiver.
Second Sonar Return - when the sonar signal
bouncesbetweenthebottomandthesurfaceofthe
water and back again. Use the appearance of the
second return to determine bottom hardness. Hard
bottomswillshowastrongsecondreturn,whilesoft
bottomswillshowa very weakoneornoneatall.
Speed - if a Temp/Speed accessory or GPS
Receiver is attached, the FishFinder can display
the speed of the boat, and can keep a Triplog of
nautical or statute miles traveled.
NOTE: Entries in this view that list (with Temp/Speed or GPS Receiver) are available if either
only the information from the GPS receiver will be displayed on the view.
Cursor - available in Freeze Frame and can be
positioned in the Sonar View to provide depth of a
sonar return and bottom depth below the cursor.
Cursor Dialog Box - indicates cursor depth on the
display and the depth of the bottom directly below
the cursor. The Latitude and Longitude of the cursor
position, the distance to travel to the cursor position
andthebearingtothecursorpositionisshownwitha
GPSreceiver. Awaypointcanbemarkedatthecursor
positionforlaterretrievalandusewithaGPSreceiver.
5

under and adjacent to your boat, including the following items:
RTS® (Real Time Sonar) Window
Structure - where fish may be hiding.
Thermoclines - layers of water with different
temperatures that appear at different depths
and different times of the year. A thermocline
typically appears as a continuous band of
many colors moving across the display at the
same depth.
83 kHz Blue Fish Symbol
Bait Ball
Fish - the FishFinder displays fish as arches
and/orfish icons,and canbesetto alarm when
a fish of a certain size is detected. When a
target is detected, a Fish ID+TM symbol appears
on the display with the depth displayed above
it. The size of the symbol indicates the intensity
of the sonar return. The unit will clearly show
schools of Bait Fish as "clouds" of different
shapes and sizes, depending on the number of
fish and boat speed.
Low Sonar Intensity Return
High Sonar Intensity Return
device is connected to the 300 Series™ Fishing System. If both devices are connected, then
200 kHz Orange Fish Symbol
6

7
iews
The views available on your 300 Series™ Fishing System are:
Sonar views: Navigation views:
• Sonar View • Bird’s ye View
• Zoom View • Chart View
• 200/83 kHz Split Sonar View • Combo View.
• Big Digits View
• Circular Flasher View.
NOTE: When you change any menu settings that affect the sonar, the view will update
immediately (i.e. you don’t have to exit the menu to apply the change to the screen).
SonarViewisthedefaultview.Whenthe VI W keyispressed,thedisplaycycles through
the available views. When the XIT key is pressed, the display cycles through the
available views in reverse order. Any view can be hidden or displayed as part of the view
rotation using the Views Menu tab.

8
Sonar iew
Sonar View presents a historical log of sonar returns. Depth is always displayed.
Readouts for temperature and speed are automatically displayed if the appropriate
accessory is connected. The most recent sonar returns are charted on the right side of
the window; as new information is received, the older information is moved across the
display to the left. A Digital Depth Readout is displayed in the upper left corner. A scale
with Upper and Lower Depth Range readouts appears along the right edge of the Sonar
View. The scale indicates the distance from the surface of the water to a depth range
sufficient to show the bottom. Depth Range is automatically selected to keep the
bottom visible on the display, although you can adjust it manually as well (see Sonar
X-Press™ Menu). Five additional Digital Readouts display information from optional-
purchase accessories. These information boxes can be customized to show only the
information desired (see Setup Menu Tab, Select Readouts).
NOTE: If the Depth number is flashing, it means that the unit is having trouble locating the
bottom. This usually happens if the water is too deep, the transducer is out of the water, the
boat is moving too fast, or for any other reason that the unit can’t accurately receive
continuous data.
Sonar View
Upper Depth
Range
Sonar History
indow
Depth
Cursor
Dialog Box
Temperature
Triplog
Lower Depth
Range
RTS® indow
Cursor

9
Understanding Sonar History
It is important to understand the significance of the
300 Series™ Fishing System display. The display does
NOT show a literal 3-dimensional representation of
what is under the water. ach vertical band of data
received by the control head and plotted on the
display represents something that was detected by a
sonar return at a particular time. As both the boat and
the targets (fish) may be moving, the returns are only
showing a particular segment of time when objects
were detected, not exactly where those objects are in
relation to other objects shown on the display.
Real Time Sonar (RTS®) Window
AReal Time Sonar (RTS®) Window appears on the right side of the display in the Sonar
View only. The RTS® Window always updates at the fastest rate possible for depth
conditions and shows only the returns from the bottom, structure and fish that are
within the transducer beam. The RTS® Window plots the depth and intensity of a sonar
return. (See Sonar Menu: RTS® Window) .
The Narrow RTS® Window
indicates the sonar intensity
through the use of colors.
Red indicates a strong
return and blue indicates a
weak return. The depth of
the sonar return is indicated
by the vertical placement of
the return on the display
depth scale.
The Wide RTS® Window
indicates the sonar intensity
through the use of a bar
graph. The length of the
plotted return provides an
indication of whether the
returnisweak orstrong. The
depth of the sonar return is
indicated by the vertical
placement of the return on
the display depth scale.

10
Freeze Frame
FreezeFrame- Pressinganyarrowonthe4-WAYCursorControlkeywillfreezethescreen
and a cursor will be displayed on the screen. The cursor can be positioned on the display
using the 4-WAY Cursor Control key to determine the depth of any sonar return. The
RTS® Window continues to update in Freeze Frame. In addition, see the effects of menu
settingchanges withInstant Image Update.Pressing XITwillexitFreezeFrameandthe
display will start to scroll. Freeze Frame is available in the Sonar, Sonar Zoom, and
200/83 kHz Split Sonar Views.
Bottom Presentation
Astheboatmoves,theunitchartsthechangesin depth on the displaytocreateaprofile
of the Bottom Contour. The type of bottom can be determined from the return charted
on the display. A Hard Bottom such as compacted sediment or flat rock appears as a
thinner line across the display. A Soft Bottom such as mud or sand appears as a thicker
line across the display. Rocky Bottoms have a broken, random appearance.
The sonar returns from the bottom, structure and fish can be represented as either
WhiteLine® or Structure ID®. See Sonar Menu Tab: Bottom View for details on how to
set the bottom view.
Bottom Contour Profile with R S® Window.
emp/Speed Accessory is optional.
Rocky Bottom
Hard Bottom
Soft Bottom

11
Structure ID® represents weak returns in blue and
strong returns in red.
WhiteLine® highlights the strongest sonar returns in
white, resulting in a distinctive outline. This has the
benefit of clearly defining the bottom on the display.

12
Sonar Zoom iew
Sonar Zoom View increases the displayed resolution to separate sonar returns that are
very close together, such as those caused by fish suspended close to the bottom or
within structure. In Zoom View, the display is split to show a narrow slice of the full
rangeviewontherightand thezoomedviewontheleft.Thefullrangeviewontheright
also contains the Zoom Preview Box that shows what part of the full range view is
shown in zoom view on the left; the Zoom Preview Box tracks the bottom in the full
range view.
As the depth changes, the zoomed view updates automatically to display a magnified
image of the bottom. The Zoom Preview Box shows where the zoomed view is in
relation to the full range view. The Zoom Level, or magnification, is displayed in the
lowerleft cornerandcanbechanged to suitconditions (seeSonar X-Press™ Menu: Zoom
Level). Upper and Lower Zoom Depth Range numbers indicate the depth of the water
which is being viewed.
Digital depth is displayed in the upper left hand corner. The digital readouts in the Sonar
Zoom View cannot be customized; therefore, information such as water temperature
and voltage are unavailable in the Sonar Zoom View.
Sonar Zoom View
Upper Depth
Range, Zoom View
Upper Depth
Range, Full
Range View
Full Range
View
Zoom
Preview Box
Lower Depth
Range, Full
Range View
Zoomed
View
Zoom Level
Depth
Lower Depth Range,
Zoom View

13
200/83 kHz Split Sonar iew
Split Sonar View displays sonar returns from the 83 kHz wide beam on the left side of
the screen and displays sonar returns from the 200 kHz narrow beam on the right side
of the screen. Depth is always displayed in the upper left hand corner. You can use the
Split Sonar View to make side by side comparisons between the sonar returns from the
83 kHz wide beam and the 200 kHz narrow beam.
The digital readouts in the Split Sonar View cannot be customized; therefore,
information such as water temperature and voltage are unavailable in the Split
Sonar View.
200/83 kHz Split Sonar View
Depth
83 kHz
Sonar History
indow
200 kHz
Sonar History
indow
Lower Depth Range
Upper Depth
Range