SeaSPY2 measures scalar total magnetic field using an Overhauser sensor for towed marine surveys. It can be configured as a single sensor or gradiometer and integrated with compatible side-scan sonar systems. Magnetic anomalies help surveyors locate ferrous objects; interpretation and target identification depend on the survey design and complementary evidence.
Technical detail
Core features
Vendor-specified 0.1 nT absolute accuracy and 0.001 nT resolution
Sampling from 0.1 to 4 Hz across an 18,000–120,000 nT field range
Single-sensor, horizontal and longitudinal gradiometer configurations
Side-scan integration with model-specific interface kit, two-way telemetry and matched power
BOB data acquisition and visualization with optional analysis module
SeaSPY
Marine magnetometer
Magnetic anomaly
Tow body
Underwater search
Use & integration
Recorded applications
Magnetic anomaly detection
Towed underwater target search
Offshore geophysical survey
Side-scan sonar survey augmentation
These describe the reviewed application scope, not confirmed deployments, released requirements or procurement eligibility.
Evidence of maturity
Commercially marketed magnetometer with vendor-reported side-scan and Iver3 integration heritage.
Commercial availability
Select the towfish housing, sensor sensitivity, cable, altimeter and sonar interface through the manufacturer. The webpage and brochure differ on standard sensitivity; the brochure describes a permit-dependent 0.01 nT option.
Integration and verification
Readiness
A technology readiness level is not established by the reviewed public sources.
Marine Magnetics's public portfolio could support modular uncrewed or remotely operated maritime workflows when integrated with appropriate acoustic sensors, command systems and operational authorities.
Marine Magnetics's documented capability could supply a distinct sensing, processing, integration, deployment or sustainment layer for a containerized anti-submarine-warfare system; this is an analyst-derived fit, not evidence of a specific procurement role.
This is a reviewed public-source assessment. It is not procurement eligibility, endorsement, customer interest, or classified demand.
Original sources 3 linked records
These records support this capability and its published Mission area and Defence need connections. A source count is not a count of independent confirmations.
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · technicaldomainslugs
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · technology readiness level
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · summary
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · defence applications
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · summary
The cited durable product or government material supports the named capability, its principal features and its existing applications; the containerized ASW fit remains a derived analyst assessment.
Supports: Capability · capability type
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · core features
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · commercial availability
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · technical tags
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · defence applications
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · technical tags
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · name
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · technical tags
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · core features
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · defence applications
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · maturity
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · defence applications
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · technicaldomainslugs
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Capability · technical tags
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Autonomous Patrol and Monitoring
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Autonomous Patrol and Monitoring
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Autonomous Patrol and Monitoring
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Autonomous Patrol and Monitoring
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Underwater ISR
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Underwater ISR
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Underwater ISR
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
Supports: Mission area · Underwater ISR
Marine Magnetics offers the SeaSPY2 scalar Overhauser magnetometer for towed marine surveys, with horizontal and longitudinal gradiometer configurations, side-scan integration and BOB survey software. The product page lists 0.1 nT absolute accuracy, 0.001 nT resolution and 0.1–4 Hz sampling; these are sensor specifications, not guaranteed target-detection distances.
The linked SeaSPY2 brochure lists 0.02 nT sensor sensitivity with a 0.01 nT optional configuration that the vendor says requires an export permit. Its second page also lists 18,000–120,000 nT range, 119 cm length, 12 kg air weight and 300/1,000/3,000/6,000 m housing options. The current webpage reverses the standard/optional sensitivity wording and omits the 300 m housing; confirm the quoted configuration.
Supports: Capability · commercial availability
The linked SeaSPY2 brochure lists 0.02 nT sensor sensitivity with a 0.01 nT optional configuration that the vendor says requires an export permit. Its second page also lists 18,000–120,000 nT range, 119 cm length, 12 kg air weight and 300/1,000/3,000/6,000 m housing options. The current webpage reverses the standard/optional sensitivity wording and omits the 300 m housing; confirm the quoted configuration.
SeaSPY2 Operation Manual v6.6, dated February 2026, distinguishes analog side-scan integration using separate conductors from digital integration relaying data and power through the sonar. Digital use requires a manufacturer interface kit, bidirectional communication and matched electrical/baud settings; compatibility is system-specific.
Supports: Capability · summary
SeaSPY2 Operation Manual v6.6, dated February 2026, distinguishes analog side-scan integration using separate conductors from digital integration relaying data and power through the sonar. Digital use requires a manufacturer interface kit, bidirectional communication and matched electrical/baud settings; compatibility is system-specific.
Public sources cited · Facts and assessments kept separate · Human review
The linked SeaSPY2 brochure lists 0.02 nT sensor sensitivity with a 0.01 nT optional configuration that the vendor says requires an export permit. Its second page also lists 18,000–120,000 nT range, 119 cm length, 12 kg air weight and 300/1,000/3,000/6,000 m housing options. The current webpage reverses the standard/optional sensitivity wording and omits the 300 m housing; confirm the quoted configuration.
Supports: Capability · maturity
Marine Magnetics’ brochure describes SeaSPY2 integration with the Iver3 AUV and available side-scan and gradiometer configurations. This is vendor-reported integration heritage; the brochure does not establish a named Canadian military acceptance or independently verified UXO detection performance.
Supports: Capability · summary
The linked SeaSPY2 brochure lists 0.02 nT sensor sensitivity with a 0.01 nT optional configuration that the vendor says requires an export permit. Its second page also lists 18,000–120,000 nT range, 119 cm length, 12 kg air weight and 300/1,000/3,000/6,000 m housing options. The current webpage reverses the standard/optional sensitivity wording and omits the 300 m housing; confirm the quoted configuration.
Supports: Capability · commercial availability
SeaSPY2 Operation Manual v6.6, dated February 2026, distinguishes analog side-scan integration using separate conductors from digital integration relaying data and power through the sonar. Digital use requires a manufacturer interface kit, bidirectional communication and matched electrical/baud settings; compatibility is system-specific.
