| Brand |
Marine Magnetics |
| Product |
SeaSPY |
| Year of development |
1998 |
| Type of sensor (caesium, Overhauser, potassium, proton) |
Overhauser |
| Is the sensor a gradiometer? (Y/N) |
Can be configured as one |
| Absolute accuracy (nT) |
0.1 |
| Resolution (nT) |
0.001 |
| Operating range (nT) |
18,000–120,000 |
| Gradient tolerance (nT/m) |
10000 |
| Sensitivity (nT) |
0.01 |
| Sample rate (Hz) |
0.1–4 |
| External trigger possibility (Y/N) |
Y |
| Operating temperature (°C) |
–40 |
| Power requirements |
3W |
| Limits of geographic operating zones |
None, worldwide |
| Direction of sensitivity |
Not affected. No dead zones |
| Fish dimensions |
124cm × 12cm diameter |
| Weight in air, water (kg) |
16 |
| Depth range |
Different models: 300m, 1,000m, 3,000m, 6,000m |
| Towfish mounting (towed, fixed mount, other) |
Towed |
| Power requirements |
3W total system |
| Type |
Vectran |
| Maximum length |
1,000m; up to 10,000m with other cables |
| Breaking strength |
2,500kg |
| Diameter (mm) |
10 |
| Weight in air, water |
44g/m |
| Is cable termination field replaceable? (Y/N) |
Y |
| Is visual read-out available? (Y/N) |
Y |
| Is visual read-out available? (Y/N) |
N |
| Digital output (Y/N) |
Y |
| Supported digital data formats |
ASCII (raw) output, Geosoft XYZ |
| Data-aquisition/processing package |
SeaLINK |
| ROV (Y/N) |
Y |
| Side-scan sonar (Y/N) |
Y |
| Sub-bottom profiler (Y/N) |
Y |
| Single-beam echosounder (Y/N) |
Y |
| Depth sensor (Y/N) |
Y |
| Heading sensor (Y/N) |
N |
| Typical applications |
Oil/mineral exploration, geophysical research, archaeology, wreck detection, object detection, UXO clearance. A versatile system that can be deployed in small inshore vessels or large bluewater survey ships |
