Unparalleled precision and sensitivity
The entire series achieves an absolute accuracy of 0.1 nT and provides a resolution of up to 0.001 nT, ensuring the capture of the faintest magnetic anomaly signals.

The Marine Magnetics series of marine magnetometers includes two core products: the SeaSPY2 high-performance magnetometer and the Explorer mini magnetometer. This series of products all use industry-leading Overhauser effect sensors, achieving unparalleled absolute accuracy (0.1 nT) and truly global omnidirectional dead zone free operation. The sensor is maintenance free, calibration free, and has no heading deviation, ensuring the consistency and reliability of survey data. SeaSPY2, as an industry benchmark, is suitable for the most demanding deep-sea and AUV integration tasks; Explorer, on the other hand, provides highly sensitive solutions for nearshore, shallow water, and portable applications with its ultimate lightweight design.

The entire series achieves an absolute accuracy of 0.1 nT and provides a resolution of up to 0.001 nT, ensuring the capture of the faintest magnetic anomaly signals.
Using Overhauser technology, sensors can obtain accurate data in any direction and anywhere in the world, without worrying about the "dead zone" problem caused by pointing to the geomagnetic north pole.
No matter how the direction of the measuring line changes, the data from continuous measuring lines can be perfectly matched, generating high-quality magnetic force maps and avoiding the loss of target signals in misaligned measuring lines.
SeaSPY2: With a maximum power consumption of only 3W, one car battery can support 150 hours of continuous operation.
Explorer: With a power consumption of only 2W, one car battery can support up to 200 hours.
Both devices do not require preheating and c
SeaSPY2: Designed to be smooth and anti winding, offering pressure resistance options up to 6000 meters.
Explorer: Weighing only 4.5 kilograms in the air, it is a portable high-sensitivity magnetometer that can truly be operated by a single person.
It is the only magnetometer successfully integrated into AUVs on the market, and can be easily integrated with side scan sonar, ROVs, and other systems, supporting longitudinal and transverse gradient measurements.

| parameter |
SeaSPY2 |
Explorer |
| Absolute accuracy |
0.1 nT |
0.1 nT |
| Sensor sensitivity | 0.01 nT (standard)/0.02 nT (optional) |
0.02 nT |
| Resolution |
0.001 nT |
0.001 nT |
| Dead zone | Nothing | Nothing |
| Heading deviation | Nothing | Nothing |
| Temperature drift | Nothing | Nothing |
| Gradient tolerance |
> 10,000 nT/m |
> 10,000 nT/m |
| Sampling rate |
0.1 - 4 Hz |
0.1 - 4 Hz |
| Pressure rating |
300m, 1000m, 3000m, 6000m |
1000m |
| length |
119 cm (47 in) |
86 cm (33.75 in) |
| Diameter |
7.6 cm (3 in) |
7.6 cm (3 in) |
| Weight in the air |
12 kg (27 lbs) |
4.5 kg (10 lbs) |
| Weight in water |
4 kg (9 lbs) |
0.7 kg (1.5 lbs) |
| power consumption | 1W (standby), 3W (maximum) |
2W |
| Power supply | 9-30 VDC (standalone), 20-30 VDC (gradient) |
9-30 VDC |
| Communication |
RS-232 |
RS-232 |
| Typical battery life | 150 hours (car battery) | 200 hours (car battery) |
| Application positioning | Professional level deep-sea, AUV integration, gradient measurement | Lightweight nearshore, shallow water, portable survey |