Maritime GNSS Reliability
When Position Data Must Be Trusted
GPS spoofing and interference are no longer theoretical risks.
Whether you need real-time confidence monitoring, anomaly detection, or long-term evidence preservation, we provide purpose-built systems for maritime operations.
Monitor confidence. Detect anomalies. Preserve evidence.
Three Products. One Mission.
Each product addresses a specific need in maritime GNSS reliability. Together, they provide comprehensive coverage from real-time monitoring to long-term evidence preservation.
GeoTape
Time-Based GNSS Evidence Vault
Passive GNSS evidence vault that preserves raw satellite navigation data in a verifiable, append-only format for post-incident review.
- Raw NMEA sentence preservation
- Time-based bundle storage
- Hash-verifiable manifests
- Long-term retention beyond VDR
- Evidence-grade integrity
GeoAlert
GNSS Anomaly Detection Service
AI-assisted anomaly detection that analyzes recent NMEA samples from GeoTape to identify drift, spoofing, jamming, and signal degradation.
- Continuous anomaly monitoring
- Position drift detection
- Spoofing indicators
- Signal quality analysis
- Teams/Email alerts
GeoWatch
Navigation Confidence Monitoring
Onboard system that monitors whether reported navigation data remains physically consistent, providing local crew alerts when confidence degrades.
- Real-time physics validation
- Multi-source comparison
- Local crew alerts
- IMU-backed verification
- No shore connection required
Integrated Protection
Three complementary systems that work together for complete GNSS reliability coverage
GeoWatch
Real-Time Monitoring
Live onboard confidence validation with local crew alerts
GeoAlert
Anomaly Detection
AI-assisted analysis of recent data for fleet-wide insights
GeoTape
Evidence Preservation
Long-term archival of raw data for post-incident analysis
How They Work Together
Present
GeoWatch alerts crews immediately when navigation data stops making physical sense
Recent
GeoAlert analyzes recent patterns to identify emerging anomalies across your fleet
Archive
GeoTape preserves all evidence for months or years of later review and analysis
Choose Your Solution
Each product serves a specific need. Pick based on your requirements.
| Capability | GeoTape | GeoAlert | GeoWatch |
|---|---|---|---|
| Real-time crew alerts | ✗ | ✗ | ✓ |
| Anomaly detection | ✗ | ✓ | ✓ |
| Long-term evidence storage | ✓ | ✗ | ✗ |
| Fleet-wide monitoring | ✓ | ✓ | Per-vessel |
| Requires shore connection | ✓ | ✓ | ✗ |
| Onboard hardware | Agent | ✗ | ✓ |
| Legal/insurance use | ✓ | ✓ | ✓ |
Offshore Vessels
DP operations, station-keeping
Fleet Managers
Multi-vessel monitoring
Legal/Insurance
Dispute resolution, claims
Complete Coverage
All capabilities
Use Cases
Insurance & P&I Claims
Preserve verifiable GNSS evidence for long-tail maritime disputes and claims
Offshore Operations
Real-time confidence monitoring for DP vessels and station-keeping
Charter Disputes
Independent position evidence for route and timing disagreements
Fleet Risk Management
Monitor GNSS health across multiple vessels from shore
GNSS Interference Investigation
Maintain raw data and detection records for expert analysis
Post-Incident Reconstruction
Access historical GNSS data beyond VDR retention windows
Our Philosophy
Evidence, Not Opinions
We preserve observations and detect inconsistencies. We don't interpret causes or make operational decisions.
Boring Systems Survive Scrutiny
Intentionally simple, transparent designs that avoid false positives, operational risk, and legal ambiguity.
Physics Over Algorithms
When possible, we validate against physical reality rather than sophisticated models that can be questioned later.
Get Started
Talk to us about deploying maritime GNSS monitoring and evidence systems on your fleet.
About Tardisoft Systems
The tardigrade is one of the toughest organisms on Earth. It survives crushing pressure, extreme heat, freezing cold, radiation, and total dehydration—conditions that destroy almost everything else.
That resilience is what Tardisoft is built around.
We design and support rugged IT systems that keep working where failure isn't an option: offshore, deep-sea, and other extreme environments. From hardened infrastructure to real, around-the-clock IT support, we make sure vessels and crews stay operational no matter how harsh the conditions get.
Extreme environments demand extreme reliability. We build for that reality.
