SeaSPY

Workhorse System

A reliable high sensitivity magnetometer with unmatched absolute accuracy. It’s also the only longitudinal gradiometer on the market. Side Scan integration is also available, as are horizontal transverse gradiometers.

Applications:

Variable baselines ideal for resource exploration or geoscience

Deployments:

Boat TowSide Scan

Going loooong

Medium to long baseline measurements with a longitudinal gradiometer are ideal for surveying from a distance for small while eliminating deeper geological interference.

Shipwreck, Search and Salvage: highlight near-surface magnetic sources like steel hulls, boilers or engines

Environmental Survey: Highlight shallow magnetic sediments based on your towing altitude.

Exploration Geophysics: search for very small gradients based on expected depth-to-source

Build Quality

Specialization matters

Long baseline: 1.5m to 500m+

Superior gradient measurement sensitivity and increased detection ranges.

Proven High Sensitivity

Independently tested by the world authority INTERMAGNET–the global network of observatories, monitoring the Earth’s magnetic field.

Unmatched Absolute Accuracy

0.1 nT accuracy and unmatched repeatability between sensors ensures best possible data.

No Heading Bias

No matter how our sensors are oriented, successive survey lines match up perfectly.

Survey in Any Direction, Anywhere in the World

Custom omnidirectional overhauser sensors collects good, accurate data anywhere.

Hydrodynamic Stability

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

Make SeaSPY2 L-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

Inter-Fish Cable
Length: Custom 1.5 m – 500 m
Weight: 1.8kg + 0.125 kg/m

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

System

Integrated
Electronics module with Larmour counter
Leak Detector

Optional: Pressure sensor, Altimeter

Inter-Fish Cable

Cables

Tow Cable

Conductors: Twisted pair
Breaking Strength: 2,500 kg
Outer Diameter: 1 cm
Weight in Air: 125 g/m
Weight in Water: 44 g/m
Cable Termination: Field Replaceable

Floatation Tow Cable

Conductors: Twisted pair
Breaking Strength: 2,500 kg
Outer Diameter: 1.9 cm
Weight in Air: 125 g/m
Weight in Water: -20 g/m
Cable Termination: Field Replaceable

Software

BOB Survey Software

Easily plan, configure, execute, and analyze your survey –free and native for all our magnetometers. Add-on: Make near-time Total Field and Analytic Signal maps from your survey data.

Overview