Garmin GPSMAP 556s Sounder with Internal Antenna Preloaded UK/Ireland

Garmin GPSMAP 556s Sounder with Internal Antenna Preloaded UK/Ireland

Availability: DISCONTINUED
Product Code: 010-00775-03


EGNOS enabled for greater accuracy BlueChart® Marine compatible


  • Display Type: 256+ colour VGA, sunlight-readable
  • Screen Size: 5.0" diag. (127 mm)
  • Resolution: 480 x 640 pixels
  • Cartography: Enhanced worldwide satellite imagery basemap
  • Preloaded with UK & Ireland marine cartography
  • Single SD memory card slot for optional BlueChart G2 VISION cards
  • NMEA 2000-compatible
  • Waterproof: IPX7 submersible
  • Mount: Tilt/swivel

Package Includes

  • GPSMAP 556s
  • Tilt/swivel mount
  • Protective front cover
  • Power/data cable
  • Documentation

Additional Map Data

Optional BlueChart® G2 VISION cards provide:
- Hi-res satellite imagery which can be overlaid on the basemap
- 3D charting information for a true "mariner's eye view" perspective
- 3D perspective below the water line for displaying bathymetry in a "fish eye view"
- Auto guidance technology suggests the best course to a destination
- Navigationally significant aerial photographs
- Coastal roads and points of interest detail

Add Sonar

The sounder version, GPSMAP 556s, is compatible with an optional dual-frequency transducer for clear illustration of depth contours, fish targets and structure whether you're fishing in freshwater or off the coast. The GPSMAP 556 and GPSMAP 556s are also NMEA 2000-compatible for easy connectivity with sensors, instruments and future marine offerings.

For ease of installation we recommend transom mount transducers.  While a dual frequency transducer is suitable for both seawater and freshwater use, if you intend to use your sounder mostly on freshwater lakes, a single frequency dual beam transducer is more suitable because one of the beams has a wide beam angle which covers a greater volume of water and is especially useful in shallows.

Dual Frequency - 200/50kHz, 15/45°, plastic, transom mount, depth, temp.
Product code: 010-10272-00.  Cost: €76.00 incl. VAT.

Dual Beam: - 200kHz, 20°, plastic, transom/trolling motor mount, depth, temp.
Product code: 010-10249-00.  Cost: €65.00 incl. VAT.

To order a transom mount transducer and any other accessories for your GPSMAP 556s please call us on 01-293 6987.

Technical Details

Physical & Performance:

Unit dimensions, WxHxD: 5.9" x 6.4" x 2.9" (15.0 x 16.3 x 7.4 cm)
Display size, WxH: 3.0" x 4.0", 5.0" diagonal (7.6 x 10.2 cm, 12.7 cm diagonal)
Display resolution, WxH: 480 x 640 pixels
Display type: VGA display
Weight: less than 1.75 lb (0.8 kg)
Waterproof: yes (IPX7)

Maps & Memory:

Basemap: yes
Preloaded street maps: no
Ability to add maps: yes
Accepts data cards: SD™ card slot
Waypoints/favorites/locations: 3,000
Routes: 100

Features & Benefits:

CANet® compatible: no
Supports AIS (tracks target ships' position): yes
Supports DSC (displays position data from DSC capable VHF radio): yes
Audible alarms: yes
Tide tables: yes
Sun and moon information: yes
3-D map view: yes (with optional BlueChart g2 maps)
Dual-frequency sonar capable: yes
Dual-beam sonar capable : yes
Split-screen zoom: yes
Split-screen sonar/gps: yes
Ultrascroll® (displays fish targets at higher boat speeds): yes
See-thru® technology (exposes fish hidden in cover): 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


Frequency: dual freq: 50/200 kHz
Transmit power: 1-kW RMS
Voltage range: 10-32 Vdc
Maximum depth: 2000 ft