Atmosphere control is mission critical
JFD’s iSAMS (Intelligent Submarine Atmosphere Monitoring System) is a next-generation solution designed to deliver precise, real-time environmental monitoring throughout diesel-electric submarines. Compact, configurable, and built for safety, iSAMS reduces hardware footprint while improving the accuracy, reliability, and accessibility of life-support data onboard.
Why Submarine Atmosphere Monitoring Matters
Monitoring internal air quality is essential to protect submariners and sensitive onboard systems. Traditional gas analysis systems are bulky and limited in functionality. JFD’s iSAMS changes that—replacing over 30 pieces of legacy equipment with just 7 compact, intelligent units, all networked together for seamless control and monitoring.
What iSAMS Monitors
- Carbon Monoxide (CO)
- Hydrogen (H₂)
- Oxygen (O₂)
- Carbon Dioxide (CO₂)
- Refrigerants (e.g. R134a)
- Optional: VOCs, particulates, odours
A Smarter, Streamlined System
iSAMS consists of three core components:
- Intelligent Submarine Environmental Monitor (iSEM)
Installed in each compartment. Configurable with up to six Universal Sensing Modules per unit, with additional analogue interfaces for third-party sensors. iSEMs provide local readouts, so crew can view environmental status in real time. - Universal Sensing Module
Houses a standardised sensor interface for easy module swapping and menu-based reconfiguration. Supports auto, semi-auto, or manual calibration. - Centralised Monitoring Unit (CMU)
Located in the control room, it collects and displays data from all iSEMs, enabling cross-compartment monitoring and early detection of atmospheric risks.
Key Benefits at a Glance
- Reduces onboard equipment count dramatically
- Smaller size, lighter weight, and lower footprint
- Enhanced redundancy with compartmentalised, independent operation
- Backup battery for power loss resilience
- Configurable to meet any compartment's gas detection needs
- Compliant with military and environmental testing standards

Optional Enhancements
- Automated CO₂ scrubber control
- Oxygen make-up/injection
- Comprehensive air quality analytics (VOCs, particulates, odour)

Tested. Certified. Trusted.
JFD’s iSAMS meets the highest standards for military and industrial reliability:
- MIL-STD-461F – Electromagnetic compatibility
- MIL-STD-167/1 – Shipboard vibration resistance
- Certified gas and environmental performance testing
Modern Monitoring for Modern Submarines
iSAMS is more than a monitoring system; it’s a fully integrated environmental safety solution for the next generation of diesel-electric submarines. With its modular setup and intelligent design, it’s engineered to support safer missions and smarter decisions below the surface.

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