Intended Users
The initial development effort is focused on commercial fishing vessels and their crews. Future versions may be adapted for recreational boats, yachts, workboats, cargo vessels, and other maritime operations.
MMT Sentinel
Man-Overboard Detection and Crew-Location System
In DevelopmentMMT Sentinel is under development to estimate crew-device locations aboard a vessel and help operators recognize a potential man-overboard event. Real-time localization has been demonstrated through vessel testing and controlled validation, and the system combines onboard positioning, local software monitoring, and planned independent detection methods within a vessel-focused prototype platform.
Problem Addressed
A man-overboard event can occur without immediate visual confirmation, especially during active operations, poor visibility, noise, or reduced staffing. The system is being developed to provide an additional source of onboard awareness during these incidents.
High-Level Operation
Crew members carry small radio devices while fixed reference devices are positioned around the vessel. An onboard computer receives measurements, estimates device locations, monitors configured boundaries, and presents status information to the operator.
Potential Benefits
Potential benefits include improved crew-location awareness, faster recognition of unusual movement, locally available status information, and recorded test or event data. These benefits remain subject to continued development and validation.
Planned Features
- Real-time crew-device status
- Vessel-relative position estimates
- Configurable vessel boundaries
- Audible and visual alerts
- Local touchscreen interface
- System-health monitoring
- Event and test-data logging
- Secondary perimeter detection
- Support for enclosed or below-deck areas
Field Testing
The prototype has progressed from controlled ranging and calibration testing through an initial vessel field test and a formal controlled localization validation session. Testing has evaluated measurement stability, vessel-based operation, positioning accuracy, and system behavior across a range of conditions, and a subsequent calibration update was independently validated to substantially improve positioning accuracy.
Development Timeline
Development has proceeded through hardware calibration, an initial vessel field test, real-time localization software, a formal controlled localization validation session, and a calibration improvement that was independently validated with substantially improved accuracy. Current work is focused on a more robust network architecture for vessel-scale deployment, followed by expanded marine testing. Public launch timing has not been announced.
Availability
The system is currently a research and development prototype. It is not available for purchase, and no commercial release date has been announced.
Frequently Asked Questions
What is the system intended to do?
It is being developed to estimate crew-device locations aboard a vessel and provide an additional source of awareness for potential man-overboard events.
Is the product currently available?
No. The system remains under development and is not commercially available.
Has Sentinel been tested aboard a vessel?
Yes. Sentinel has completed an initial vessel field test along with a formal controlled localization validation session, and a subsequent calibration update was independently validated to substantially improve accuracy. The system has not yet completed the full scope of vessel validation needed for commercial deployment.
Are you looking for testing or industry partners?
Marriner Marine Technologies welcomes discussions with vessel operators, captains, fishermen, marine-safety professionals, researchers, and organizations interested in responsible prototype testing or technical collaboration.
Product Collaboration
We are interested in hearing from vessel operators and marine professionals who can provide practical insight into vessel layouts, crew workflows, emergency response, and real-world testing needs.
Contact the Team