Two Specialty Devices Hydrographic Survey Systems

• Intelligent Depth Sounder that digitizes the echo to 16 bit resolution and stores the full digital record on hard disk
• Sounding ranges to 200 meters with accuracy to one centimeter
• DepthPro Software and Depthpic Software provide convenient replay and reprocessing of hydrographic data.
•  DGPS and DGPS Reference Subsystems— 24 channel receivers and RTK for sub-centimeter accuracy
• Navigation Computer Subsystem— dedicated Intel Pentium Computer with HYPACK 2010 software for navigation and post-processing
• RTK Driven Navigation with 200 kHz and 28 kHz transducers
• Positions, events and operator annotations are exchanged between HYPACK and SDIDEPTH
• Ashtech ProFlex 500 RTK GPS unit with antenna and receiver which feeds into the HYPACK software to provide horizontal and vertical positioning, eliminating the need for a tide station. The increased accuracy in using this system is most evident in areas of extreme tidal variations.

Multibeam Echo Sounders

Reson SeaBat 7125  Multibeam Echo Sounder

• Depth range from 0.5 meters (1.65 feet) to 450 meters (1650 feet)
• Transducer depth rate at 6000 meters (19,800 feet)
• Frequency 200 and 400 kHz
• Swath coverage 165 ˚

SS330/800 Side Scan Sonar

• 330 kHz or 330/800 kHz frequency
• One transducer per side, tilted down 20°
• Beam Width: 1.8° x 60° at 330kHz  or 0.7° x 30° at 800kHz
• 100-foot maximum operating depth
• Range scales: 50, 100, 200, 300 and 400-foot
• File Format:  (filename).81s

• Shipboard receiver model 103
• Together with its associated transmitter, this 1000’ (FSW) cable and pipeline detection system provides the capability for accurate location, tracking and surveying of both underground and underwater cables and pipelines, buried or not.  This “Active” system senses and processes the presence of an AC signal injected into a cable or pipeline. The resultant electric and electro-magnetic fields are detected and used to provide cable and cable fault positioning data.
• Locating accuracy is better than ± 6 inches.
• The system can be assembled for deployment in a variety of different configurations, including ROV use.
• Depending on applications, this system can be used from the surface to water depths of ~ 100 feet (30m) or submerged to water depths of ~ 700 feet (235m).

Submarine Cable Detector Model 101

• The model 101 “Active” System senses the presence of an AC signal injected into the cable.  The resultant electro-magnetic field is detected and used to provide pinpoint positioning data.  The Model 101 Detector is the basic sensor.  This device (with its transmitter)can be configured for hand-held operator use and can be used from a surface vessel or deployed with a diver.
• Accurate locating (± 0.5 feet) and tracking of submarine cables, buried or not

• Motion & Heading Reference Unit  (MHRU 33H) with heading, pitch, roll, and heave outputs for single beam and shallow water multi-beam hydrographic survey systems
• Odom Hydrographics Digibar Pro with 100-meter cable for speed of sound calibration
• Three inch VibeCore-D for core sampling
• Geometrics G-882 Marine Magnetometer
• Ocean Technologies MK-II Buds AGA FF dive mask with Buddy Phone for wireless surface communication
• Underwater surface tethered video system
• Applied Acoustics Easytrack lite USBL with 219 microbeacon
• Acoustic Doppler Current Profiler
• Seabird Electronics Conductivity, Temperature, Depth (CTD) Sensors

Diving Equipment

	Three full diver set ups: US Diver regulator system with dive computer, octopus, pressure gauge and depth finder, bail-out bottles with individual regulator systems, neoprene wet suit, Scuba Pro buoyancy compensators, mask, fins and snorkel.
	Underwater video camera with topside video output and underwater lighting system
	Surface air diving system with communication between topside and diver utilizing Ocean Technologies MK-II Buds Aga FF mask with Buddy Phone

Hydrographic Survey and Dive Vessels

NEW ADDITION TO OUR FLEET! 40' Sea Ark survey and dive boat, powered by two 450HP Detroit Diesel engines
20’ Monarch aluminum hull survey boat with 175hp Johnson outboard engine
18’ Side Console Inshore Hydrographic Boat- heavy gauge aluminum, powered by a 40hp Johnson outboard engine
20’ Center-console Mako powered with a 150hp Johnson outboard engine
2007 14 x 8 foot  Marshmaster Choice fiberglass Air Boat powered by 285hp aircraft engine with Sensenich aircraft propeller
37’ Jet Powered Hydrographic Survey Catamaran- S/V Theory
43’ Jet Powered Survey Catamaran- S/V Jab