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Marine Technology - Assets & Development 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.
New technology being used: M/V Sea Hunter
![]() 220 Foot Research Vessel
Vector M5
![]() Vector M5 is a portable high performance ROV system, combining superior power, telemetry and payload with
each of use, ruggedness and reliability - providing a powerful overall performance envelope and versatility compared to other vehicles of
its class. It has five high performance thrusters - four vectored and one vertical. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SPECIFICATIONS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Camera Unit: DOE 18:1 color zoom camera unit. User Interfaces: The Graphical User Interface (GUI) provides intuitive feedback and active graphics
for easily controlling vehicle handling, navigation and sensor data collection. The GUI includes several menu screens with readily accessible
information to guide connectivity, setup, pre-dive checklist, navigation, inspection, post-dive checklist, diagnostics and an online
searchable technical manual. The ergonomic hand controller can override the GUI/OSD (On Screen Display) computer, providing redundancy and
back-up. On Screen Display: This is a continually updated video display, which provides the operator with
intuitive compass rose heading, depth, turns count, elapsed time, water leak alarm and much more information, allowing the vehicle to be
operated safely. It may also be used to display sensor data such as temperature, altitude or GPS position on the screen. Additional digital
and analog I/O channels and vehicle data may be exported to the navigational or survey computer. Chassis: A modular chassis manufactured from polypropylene. This extremely rugged material is
maintenance free, self-supporting in water and non-corroding - providing the vehicle with an energy absorbing protective framework.
Ancillary equipment are easily mounted on the frames and bottom panel. Propulsion: Fully pressure compensated, high performance DC brushless thrusters. The high torque,
gearless thruster design is highly robust and quiet. A hydrodynamic nozzle provides symmetric thrust with a compact form factor. Careful
attention to component design and materials for reliability and ruggedness, such as the use of high quality industrial mechanical
seals, provide a long, dependable and near maintenance-free operational life. Vehicle Electronics/Telemetry: Continuous full control and diagnostics of onboard vehicle
functions through a digital communications link. Standard configuration includes up to three continuous video channels over TSP (Twisted
Shielded Pair), and expandable digital telemetry over copper including RS232, RS485, Ethernet and options for fiber-optic. Navigation: Rate gyro stabilized, solid-state magnetic compass unit: resolution ± 0.1 degrees, accuracy
± 0.5 degrees, update rate 50mS. Electronic depth sensor: accuracy 0.25% of fsd. Auto-pilot: Selectable automatic pilot for auto-heading, autodepth and optional auto-altitude. Lighting: 2 x 250 watt Quartz-halogen lamp units. The control is On/Low/Medium/Full. Power requirements: Input 230V AC, 50/60 Hz, 10 kVA, single or 3-phase. On-board user power available
- instrumentation 24 VDCC, auxiliary power at up to 400 VDC. Umbilical cable A supple, rugged cable, designed for harsh ocean environment with a 1000lb working
load: neutrally buoyant in fresh water, diam. 0.6in (16mm); or optional smaller diameter without floatation jacket (heavy) at 0.5in (12.5mm). Options Fiber-optic telemetry, sonar systems, tracking systems, specialized cameras, cable reels
(manual or powered), various manipulators, additional tools and sensors, spares kits, technical training. A basic Side Scan Sonar System is shown above. It consists of a topside processing unit, a cable for electronic
transmission and towing, and a subsurface unit (a tow fish) that transmits and receives acoustic energy for imaging. Sub Sea's 4100 Side Scan Sonar System is the long lasting workhorse of hydrographic surveying. The topside processor is either a 19-inch rack
mountable case (4100) or a water resistant portable system (4100-P). EdgeTech's DISCOVER Side Scan Sonar software runs on the 4100 and 4100-P. Towfish Model 272-T 272-TD Frequency 100 kHz - 105 ± 10 kHz 500 kHz* - 390 ± 20 kHz Horizonal Beam Width 100 kHz - 1.2 degrees (3dB points) 500 kHz* - 0.5 degrees (3dB points) Depth Rating 1000 Meters 1000 Meters Operating Range (Maximum) 100 kHz - 500 meter swath 500 kHz* - 200 meter swath Tow Cable Length (Maximum) 500 meters 500 meters Tow Cable Type 7 conductor 7 conductor Towfish Diameter 11.4cm. (4.5") 11.4 cm. (4.5") Towfish Length 140 cm. (55") 140 cm. (55") Towing Speed (Operational) 3-5 knots 3-5 knots Weight (In Air) 25kg (55lbs.) 25kg (55lbs.) Weight (In Sea Water) 12kg (26lbs.) 12kg (26lbs.) Options USBL Acoustic Tracking System USBL Acoustic Tracking System The 4200 Series utilizes EdgeTech's Full Spectrum CHIRP technology to provide crisp, high resolution
imagery at longer ranges than conventional side scan systems. The 4200 Series comes available in two different versions; the 4200-SP and 4200-MP.
The 4200-SP acts as a traditional side scan system whereas the 4200-MP is a dual mode system with an added High Speed Mode (HSM) of operation.
4200-MP: Digital dual simultaneous frequency side scan sonar system with added High Speed Mode allowing tow speeds of up to 10 knots
while meeting NOAA/IHO specifications for 3 hits on a meter target.
4200-SP and 4200-MP: Choice of either 100/400 kHz, 300/600 kHz or 300/900 kHz dual simultaneous frequencies.
4200-SP and 4200-MP: Choice of either 19 inch rack mount or portable topside processor or 701-DL Digital Link to interface to third
party topside processors.
4200-SP and 4200-MP: Choice of stainless steel (2000 meter rated) or lightweight aluminum (500 meter rated) towfish.
4200-SP and 4200-MP: Pressure, temperature, magnetometer, acoustic responder, depressor and custom sensors available.
*Note: horizontal beam width at 100 kHz is 1.5 degrees as opposed to 0.64 degrees for the 4200-MP.
Frequency (Dual Simultaneous) Choice of either 100/400, 300/600 or 300/900 kHz Horizontal Beam Width (HDM) 100 kHz: 0.64 degrees, 300 kHz: 0.28 degrees, 400 kHz: 0.3 degrees, 600 kHz: 0.26 degrees, 900 kHz: 0.2 degrees Horizonal Beam Width (HSM) 100 kHz: 1.26 degrees, 300 kHz: 0.54 degrees, 400 kHz: 0.4 degrees, 600 kHz: 0.34 degrees, 900 kHz: 0.3 degrees Operating CW Pulse Short Range Yes Operating Range (Max) 100 kHz: 500m, 300 kHz: 230m, 400 kHz: 150m, 600 kHz: 120m, 900 kHz: 75m Towing Speed (Max safe) 12 knots Towing Speed * 4.8 knots in HDM, 9.6 knots in HSM Towfish Material Stainless Steel Aluminum Towfish Diameter 11.4 cm (4.5 inches) 11.4 cm (4.5 inches) Towfish Length 125.6 cm (49.5 inches) 125.6 cm (49.5 inches) Weight (In Air) 48 kg (105 lbs.) 30 kg (66 lbs.) Weight (In Sea Water) 36 kg (80 lbs.) 18 kg (40 lbs.) Operating Depth (Max) 2000 meters 500 meters Tow Cable Type Coaxial Coaxial Tow Cable Length 6000 meters typical 6000 meters typical Options Pressure, temperature, magnetometer, USBL acoustic tracking system, depressor, power loss
pinger and custom sensors.
The integration maintains the basic system integrity of each subsystem, allowing each to be used separately or
together. In integrated mode, power and data multiplexing are supplied from the System 2000 to the G-880G, which is towed eight meters behind
the side scan sonar. At the surface the magnetometer data is separated from the sonar data by the System 2000 Display/processor unit and
transmitted to the Data Display and Processing Unit. The magnetic gradients and sonar data are concurrently logged with DGPS position data
acquisition and processing station. The combined data affords improved target acquisition, accurate spatial plotting and characterization of
target size and depth.
Magnetometers detect ferrous metals that could be attracted by a magnet. Steel, iron and iron rich rocks. A good
way to remember this is that ferrous metals (detectable) rust or stain yellow/orange. A vessel towed magnetometer will read the earth's magnetic
field and when towed in an area of ferrous metals (such as rusted debris from a shipwreck) the magnetometer will detect the magnetic disturbance
the rusted metals generate and produce readings to allow the operator to distinguish size and location.
Magnetometers will not detect or "see" nonferrous metals. Gold, silver, lead, copper, aluminum, and some stainless
steel. A highly sensitive proton magnetometer is capable of detecting ferrous metals utilizing an omni-directional detector towed behind either a
ship or plane. In Marine applications it is advised to tow the sensor at least 3 times the vessel length to minimize the ship's influence on
readings. Magnetic measurements, taken at an interval between 0.5 seconds and 999 seconds, are displayed on an LED display, recorded into a
computer via an RS232 interface.
The model G-882 cesium-vapor marine magnetometer provides the same high performance as our airborne instruments delivering
high resolution results in all types of survey applications. The G-882 is a low cost, compact system designed for professional surveys in shallow or
deep water.
The G-882 magnetometer's digital output can be recorded with any serial data logger but its full potential is obtained
when used with our MagLog Lite software to log, display and print GPS positioned measurement results. The price, performance, and reliability of the
G-882 make it the best value of any marine magnetometer today.
The G-882 is designed for operation from small vessels for shallow water surveys as well as for large survey
vessels for deep tow applications (4,000 psi rating, telemetry over steel coax available to 10Km). Being small and lightweight (40 lbs net, no
extra weights) it is easily deployed and operated by one person. Power may be supplied from a 24 to 30 VDC battery power or the included 110/220
VAC power supply. The standard G-882 tow cable includes a Vectran strength member and can be built to up to 700m (no telemetry required). The
shipboard end of the tow cable is attached to an included junction box or optional onboard cable for quick and simple hookup to power. Output data
can be recorded on any Windows 98, ME, NR, 2000 or XP computer equipped with RS-232 serial ports. Best of all, the rugged G-882 is designed for
and has been used successfully everywhere in the world for all types of applications.
The G-882 Cesium magnetometer provides the same operating sensitivity and sample rates as the larger deep tow
model G-880. MagLogLite Logging Software is offered with each magnetometer and allows recording and display of data and position with Automatic
Anomaly Detection! Additional options include: MagMap2000 plotting and contouring software and post acquisition processing software MagPick.
APPLICATIONS FEATURES 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. 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, * Meets NOAA Shallow Water Survey Specification- Min 3 pings on a 1-meter target at 100 meters range. 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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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