Fishfinding with Garmin DownVü™ Scanning Sonar
- Garmin DownVü scanning sonar provides a nearly photographic view of fish and structure under the boat
- Includes an all-in-one advanced HD-ID™ and DownVü transducer
- 5-inch high-resolution VGA color display
- Transmit power (RMS)/(Peak-To-Peak): 500 W/4,000 W
- Includes quick-release tilt/swivel mount, transom mount and low-profile trolling motor transducer mounting kits
The echo 551dv is a premier fishfinder with an all-in-one transducer that delivers both advanced HD-ID 77/200 kHz and Garmin DownVü scanned images simultaneously on a horizontally or vertically split screen. The images provide the clearest possible fish arch returns and nearly photographic bottom/structure details under the boat.
With its bright, crisp 5-inch high-resolution VGA color display, the echo 551dv has Smooth Scaling™ which provides smooth transitions from shallow to deep water and back again. Narrow-to-wide viewing cone angles give you a big picture well beyond the sides of your boat — from shallow water down to 2,300 feet maximum¹. Also includes sonar history rewind and 4,000 W peak-to-peak power. Quick-release tilt/swivel mount plus transom and low-profile trolling motor transducer mounts make installation a snap.
Fishfinding with Garmin DownVü™ Scanning Sonar
- Garmin DownVü scanning sonar provides a nearly photographic view of fish and structure under the boat
- Includes an all-in-one advanced HD-ID™ and DownVü transducer
- 5-inch high-resolution VGA color display
- Transmit power (RMS)/(Peak-To-Peak): 500 W/4,000 W
- Includes quick-release tilt/swivel mount, transom mount and low-profile trolling motor transducer mounting kits
The echo 551dv is a premier fishfinder with an all-in-one transducer that delivers both advanced HD-ID 77/200 kHz and Garmin DownVü scanned images simultaneously on a horizontally or vertically split screen. The images provide the clearest possible fish arch returns and nearly photographic bottom/structure details under the boat.
With its bright, crisp 5-inch high-resolution VGA color display, the echo 551dv has Smooth Scaling™ which provides smooth transitions from shallow to deep water and back again. Narrow-to-wide viewing cone angles give you a big picture well beyond the sides of your boat — from shallow water down to 2,300 feet maximum¹. Also includes sonar history rewind and 4,000 W peak-to-peak power. Quick-release tilt/swivel mount plus transom and low-profile trolling motor transducer mounts make installation a snap.
Physical & Performance Physical dimensions 6.0″ x 5.9″ x 1.8″ (15.2 x 15.0 x 4.6 cm) Display size, WxH 2.9” x 4.0” (7.4 x 10.16 cm); 5” diag, (12.7 cm) Display resolution, WxH 480 x 640 pixels Display type VGA color Weight 17.6 oz (500g) Water rating IPX7 Features & Benefits Audible alarms Yes Dual-frequency (50/200 kHz) sonar capable Yes Dual-beam (77/200 kHz) sonar capable Yes Split-screen zoom Yes Ultrascroll® (displays fish targets at higher boat speeds) Yes Fish Symbol ID (helps identify fish targets) Yes AutoGain Technology (minimizes clutter, maximizes targets) Yes Whiteline (indicates hard or soft bottom) Yes Adjustable depth line (measures depth of underwater objects) Yes A-scope (real time display of fish passing through transducer beam) Yes Bottom lock (shows return from the bottom up) Yes Water temperature log and graph Yes Water temperature sensor included Yes Water speed capable (displays speed on water) Yes Other Specs Frequencies supported 50/77/200 kHz, DownVü Transmit power 500 W (RMS)/4,000 W (peak to peak) Voltage range 10-28 Vdc input Maximum depth 2300 ft @ 77 kHz, freshwater Additional HD-ID Tracking TechnologySonar History Rewind 
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