Short Baseline
Eliminate geological and diurnal interference, and emphasize near-surface objects in real-time so that recovery efforts can be started while the survey is in progress.

Marine Magnetometer

You know what’s better than a well-worn survey setup routine?
No survey setup routine.
Warm-up, gas cells, and line planning around dead zones aren’t endemic to magnetometry. Just cesium.
Build Quality
Short Baseline
Eliminate geological and diurnal interference, and emphasize near-surface objects in real-time so that recovery efforts can be started while the survey is in progress.

Anodized composite frame
Reduces drag by a factor of 10. It’s lighter to carry on land but actually stronger. New!

Sleek stable Design
Resists snags and minimizes impacts. The polyurethane coated tail with molded fins acts as a bumper, while creating a stable towing platform.

Unmatched Absolute Accuracy
0.01 nT accuracy and unmatched repeatability between sensors ensures best possible data.

Quick Glance Diagnostics
Automatic poxwer supply cutoff, and leak detection give you plenty of time to pull the mag before damage.

Works Instantly on Power-up
Data collected at –40°C will be identical to data collected at +60°C even without warmup.

Make SeaSPY2 H-Grad a perfect fit for your application.
Size + Weight
Magnetometer
Length: 119 cm
Diameter: 7.6 cm
Weight in air: 12 kg
Weight in water: 3.5 kg
Gradiometer Frame
Dimensions: 1.6 x 0.35 m
Weight: 10.4 kg
Sensor
Tuned Overhauser for absolute accuracy
Operating Zones: Worldwide
Measurement Type: Scalar
Absolute Accuracy: 0.1 nT
Sensitivity: 0.01 nT (0.02 nT optional)
Counter Sensitivity: 0.001 nT
Resolution: 0.001 nT
Dead Zone: NONE
Heading Error: NONE
Temperature Drift: NONE
Gradient Tolerance: Over 10,000 nT/m
Range: 18,000 nT to 120,000 nT
Sampling Rates: 4 Hz – 0.1 Hz
Operation
Depths ratings: 1000m, 3000m, 6000m
Power Consumption: 1 W standby, 3 W maximum (+2 W with altimeter)
Power Supply: 24VDC (120-240 VAC compatible)(Acceptable range 9-30 VDC for single SeaSPY, 20-30V for gradiometers)
Data
Communication: RS-232, 9600 bps
Cable Options
Standard Tow Cable
Conductor: Twisted pair (2)
Strength Member: Vectran Braid
Breaking Strength: 2,700 kg
Working Load: 450 kg
Outer Diameter: 10.4 mm
Weight in Air: 120 g/m
Weight in Water: 30 g/m
Cable Termination: Field Replaceable
Data interface: FSK
Material: Yellow PU
Ideal for: Heavy duty towing over FSK
Flotation Tow Cable
Conductor: Twisted Pair (2)
Strength Member: Vectran Braid
Breaking Strength: 2,700 kg
Working Load: 450 kg
Outer Diameter: 19.1 mm
Weight in Air: 285 g/m
Weight in Water: -9 g/m
Cable Termination: Field Replaceable
Data interface: FSK
Material: Orange PU
Ideal for: Shallow water towing, SSS towing
System
Integrated
Electronics module with Larmour counter
Leak Detector
Optional: Pressure sensor, Altimeter
Gradiometer Frame
Software
Other compatible software: Hypack, Geosoft, Golden software, Seebyte, Fugro, Teledyne, Chesapeake Technology, Organic Imaging Consultants
Required Accessories
x2 Gradiometer Cases:
Shipping Weight 28.1 kg each
Frame Case:
Shipping Weight 33.8 kg
Y-Split Tow Cable:
Length: 2.5 m
Weight: 3.8kg
Weight in water: Neutral
More
24V Universal AC Power Supply or Battery Clip Cable
Charging Cable: Male 8-pin Subconn Inline Micro Circular Connector
USB or RS232 Cable
Add-ons
Optional: Deck Leader Cable (30 m customizable)
Optional Accessories