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 |
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| A view of the Gradiometer towed array used to locate ferrous metals |
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- 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
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Our Edgetech Sonar Dual Frequency System |
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100 kHz/400 kHz Operating Frequencies
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Lower Frequency = Low resolution, greater range
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Higher Frequency = High resolution, less range
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Location determined by layback calculation from vessel
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| 4200-FS Side Scan System |
Configuration Diagram |
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APPLICATIONS
- Mine Countermeasures ( MCM's )
- Geo-hazard surveys
- Geological/geophysical surveys
- Archeological surveys
- Cable and pipeline surveys
- Search and recovery
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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
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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. |
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| 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. |
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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
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| Excalibur 1000 |
FEATURES |
Length |
Maximum |
1220mm |
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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 |
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M/V Diamond
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