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Kongsberg Maritime EM 712

MULTIBEAM ECHO SOUNDER

The EM 712 multibeam echo sounder is Kongsberg Maritime's second generation high to very high resolution seabed mapping system capable of meeting all relevant survey standards.
Delivering highly accurate results through superior range and resolution, the EM 712 is the most advanced multibeam echo sounder for shallow-medium waters. It supersedes the EM 710, which is well established as the de facto standard for all shallow to medium depth surveys.

  • Kongsberg Maritime EM 712
Kongsberg Maritime
Strandpromenaden 50
3191 Horten
Norway
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Description

FEATURES:

• High resolution

• Wide frequency range

• CW and FM chirp

• Roll, pitch and yaw stabilisation in realtime

• Nearfield focusing - both on transmit and receive

• Short pulse lengths and large bandwidth

• Seabed image as standard

• Water column display and logging

• Single or Dual swath for increased density or for increased survey speed

• Extra detections

• Hull unit

• Reinforced transducers for polar activities

Specifications

  • Date of first release
    2015
  • Mounting
    Hull mounted & Portable
  • Retractable
    Y
  • Length [m]
    1940
  • Width [m]
    224
  • Height [m]
    118
  • Min. external power [V]
    115
  • Max. external power [V]
    230
  • Weight in Air
    98 Kg
  • Type of system
    Multibeam
  • Bottom Detection Method
    Amplitude and Phase
  • Min. frequency [kHz]
    40
  • Max. frequency [kHz]
    100
  • Min. depth [m]
    3
  • Max. depth [m]
    3600
  • Depth resolution [mm]
    10
  • Max. swath as a function of depth
    5.5
  • Max. measurements per ping
    1600
  • Ping frequency [Hz]
    30
  • Min. beam width along track [deg]
    0.5
  • Min. beam width across track [deg]
    0.25
  • Footprint in nadir direction [m]
    0.4
  • Footprint at max. horizontal range [m]
    1.3
  • Smallest identifiable cube [m3]
    1
  • Max. swath width [m]
    4200
  • Equal footprint spacing
    Y
  • Max. number of points per ping for side scan operation
    100000
  • RMS of nadir depth measurement [m]
    0.06
  • Intended S44 order
    Special
  • Max. survey speed for specified RMS [kt]
    16
  • Real-time correction of refraction at transducer head
    Y
  • Real-time integration of SV-profile
    Y
  • Explanation of SV-profile application process
    Calculation of each sounding is according to Schnells law of refraction, in real time
  • Motion sensors compatible to the system
    Seatex MRU 5; Seapath 130/380; Applanix POS/MV; and other sensors with comparable accuracy
  • Required pitch uncertainty [deg]
    0.02
  • Required roll uncertainty [deg]
    0.02
  • Required heave uncertainty [m]
    0.05
  • Compatible software
    SIS, Qinsy, HYPACK, EIVA, Fledermaus, CARIS and others.
  • Compatible hardware
    Sound velocity at transducer; Sound Velocity profile; Position; Heading; 1PPS; Single beam echo sounder (optional)
  • Real-time access procedure
    Realtime visualization of bathymetric data; both raw data and gridded data in 2D and 3D; swath; quality of each beam; seabed image; attitude data; 3D waterfall
  • Mean time before failure [hr]
    2000
  • Mean time to repair [hr]
    1
  • Distinguishable features
    High resolution soundings up to medium water depths

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