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Marine Technology — Assets & Development

New technology being used:

*The scope and capabilities of todays advanced underwater and topside data acquisition and recovery equipment is increasing exponentially and rapidly with no end in sight. This has been our primary focus of development. We now operate to leading edge standards and have procured several major assets which thrusts Sub Sea Research into the higher echelon of Marine Intervention Survey and Recovery specialists worldwide. Cesium Magnetometer, Hi-Resolution Side Scan Sonar, DGPS Interfaced Global positioning, hi-end multi-tasking ROV units, and Data Acquisition Analyzing Programs have securely established Sub Seas Leading edge position in the industry as one of the most capable and well equipped operations in the field today.

Standards being adopted:

* The Professional standard for full research and recovery of Marine sites mandates a need for archeological integrity and a priority interest in preserving and assuring provenience of in situ documentation prior to moving or removing any shipwreck material. With the advent of hi resolution digital in camera grid processes and real time ability to establish exact coordinates and the addition of AUV and ROV equipment -this reduces and often eliminates entirely the hazards and pitfalls of human error or risk by eliminating the need for underwater human presence during much of this hereto fore intensive and tedious process. Indeed, this frees up the manpower to analyze and observe the overall site and allows the social scientists more time to do hands on in the field Marine Archaeology. Advanced technology has profoundly improved our cost effectiveness of recovery and the Ocean frontier is vastly more accessible now than it ever was.

Our Geometrics Cesium 881 Marine Magnetometer
  • Cesium detects variations in the magnetic field
  • Used to detect ferro-magnetic objects
  • Depressor and fin keep mag near seafloor
  • Towed concurrently with side-scan sonar
  • A view of the Gradiometer towed array used to locate ferrous metals
    • Fastest sampling at high sensitivity means even small targets can be detected
    • Cesium vapor technology provides furthest detection range. highest sensitivity at 0.004 nT/aHz
    • New streamlined design improves safety, less chance of snagging on rocks or debris
    • Convertible nose or CG tow mechanism, lets you choose survey style, gets fish deeper.
    • Flash memory stores all parameters, eliminates need for oh-board reprogramming
    • New echo sounder and altimeter shows height above sea bottom and depth in water column in real time
    • 2700 m (9000') depth rating lets you use one mag for all surveys
    • Easy portability and handling - no winch required- single man operation, 44 lbs with 200 ft cable (without weights or depressor wing), new carrying handle
    • Combine two systems for increased coverage– Internal CM-221 Mini-Counter provides multi-sensor data concatenation allowing side by side coverage which maximizes detection of small targets and reduced noise


    Our Edgetech Sonar Dual Frequency System
    • 100 kHz/400 kHz Operating Frequencies
    • Lower Frequency = Low resolution, greater range
    • Higher Frequency = High resolution, less range
    • Location determined by layback calculation from vessel
    4200-FS Side Scan System Configuration Diagram

    APPLICATIONS

    • Mine Countermeasures ( MCM's )
    • Geo-hazard surveys
    • Geological/geophysical surveys
    • Archeological surveys
    • Cable and pipeline surveys
    • Search and recovery

    FEATURES

    • Selectable dual mode of operation: High Definition Mode (HDM) or High Speed Mode (HSM)
    • HDM- Conventional simultaneous dual frequency operation
    • HSM- Multi pulse mode on either selected frequency
    • Extra long array (90 cm) for superior resolution (HDM)
    • Multi pulse mode (HSM)
    • 120 & 410 kHz dual frequency
    • 1000+ m depth rating
    • Single coax tow cable over 6000 m
    • Integrated with other sensors
    • Full Spectrum chirp processing
    • AUV/ROV adaptable

    DESCRIPTION

    The New Edgetech 4200-FS Side Scan System provides a unique advantage over conventional dual frequency 100/500 kHz side scan systems by combining EdgeTech's Full Spectrum and MultiPulse technologies into one unit. The new 4200-FS offers two software selectable modes of operation.

    · High Definition Mode (HDM) - conventional mode operation with extra long array (90 cm) for superior resolution; excellent tool for Mine Countermeasures ( MCM's ).

    · High Speed Mode (HSM) - dual pulse operation for speeds up to 10 knots, while meeting NOAA and IHO requirements for "hits on target" compared to conventional systems at 4 knots. This is an additional feature for high-speed navy patrol vessels.

    The 90 cm array configuration for these two modes of operation is dynamically reconfigured by the system to suit the user's immediate application. Real time selection of the 2 modes allows the user to choose the mode best suited to his task at hand.

    The 4200-FS uses EdgeTech's Full-Spectrum chirp technology to deliver wide band, high energy transmit pulses, coupled with high- resolution and superb signal to noise ratio (SNR) echo data.

    The system employs wide band, low noise front end electronics which reduce system induced phase errors and drift to negligible levels. The sonar data is also available as a complex, fully coherent data set suitable for advanced user applied post processing.

    The 4200-FS Side Scan System offers simultaneous dual frequency operation in high definition mode and is designed to allow efficient integration of other optional sensors. The Edgetech telemetry link allows the sonar signals that are digitized in the tow fish to be transmitted over the long coaxial cable (6000m) with no loss of signal quality.

    The 4200-FS sets new standards in the industry for seafloor mapping by integrating key performance and safety features, the dual mode feature along with EdgeTech's Secondary Recovery System, Standard Heading, Pitch & Roll, optional Depth and acoustic responder for accurate towing positioning.

    SPECIFICATIONS

    Tow Fish Model

    4200

    Frequency

    120 / 410 kHz dual

    Horizontal Beam Width (HDM)

    120 kHz - 0.64°, 410kHz - 0.3°

    Horizontal Beam Width (HSM)

    120 kHz - 1.26°, 410 kHz - 0.4°

    Operating Range (Maximum)

    120 kHz - 500 meter p/side; 410 kHz 150 meters p/side

    Operating Depth (meters)

    1000+

    Towing Speed (max safe)

    12 knots

    Towing Speed *

    4.8 knots in HDM, 9.6 knots in HSM

    Tow Cable Length

    6,000 meters

    Tow Cable Type

    Co-axial

    Tow Fish Diameter

    11.4 cm. (4.5")

    Tow Fish Length

    125.6 cm. (49.5")

    Weight (in air)

    52 kg (116 lbs.)

    Weight (in sea water)

    36 kg (80 lbs.)

    Options

    Pressure, Temperature, Magnetometer, USBL Acoustic Tracking System,
    Acoustic Responder, Depressor and Custom Sensors

    * Meets NOAA Shallow Water Survey Specification- Min 3 pings on a 1-meter target at 100 meters range.



    Hard targets reflect more sound energy, appear lighter in sonar image
    Soft targets and shadows absorb sound energy, appear darker
    Individual track lines are combined to create a sonar mosaic


    Excalibur 1000

    FEATURES

    Length

    Maximum

    1220mm

     

    Minimum 

    1040mm

    Weight

    Excalibur 1000*

    2.05kg

    Configuration 

    Shaft mount (Optional Hip mount)

    Technology 

    Broad Band Spectrum (BBS)

    Transmit Frequency 

    17 Frequencies (1.5, 3, 4.5....25.5 kHz)

    Ground Rejection 

    Automatic Ground Tracking

    NiCad Battery Pack 

    12V, 600 mAh

    Mains Charger

    110V ( USA ), 230V (EU), 240V (AUS)

    Headphones

    8 ohms

    Dive Shaft

    Detector Stand  

    Controls

    On/Off; Threshold

    1 turn control & switch

    Sensitivity 

    1 turn control & switch (Auto or Manual)

    Volume

    1 turn control

    Discriminate  

    1 turn control

    Pin-point/Discriminate 

    2 pos. switch

    Discriminate 

    1 turn control

    Accessories

    Alkaline Battery  Pack

    8 x 1.5V (AA)

    Car Charger 

    12V, Cigarette lighter plug

      
     

    M/V Diamond

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