In the event of a submarine in distress (DISSUB), maintaining a safe internal atmosphere is critical. JFD’s Distressed Submarine Ventilation and Decompression System (DSVDS) is a unique, fully integrated solution that enables real-time analysis, control, and improvement of a DISSUB’s internal environment; enhancing survivability and enabling recovery. 

Combining decades of experience in commercial saturation diving and submarine rescue, JFD has developed a closed-loop system that manages pressure, injects breathable gas, and supports controlled decompression—all compliant with NATO ANEP-85 standards. 

Key Capabilities 

In a Distressed Submarine (DISSUB) scenario a submarine will likely face increased pressure and possible contamination. 

JFD’s DSVDS plays a vital role in submarine rescue readiness by: 

• Maintaining a breathable atmosphere Oxygen injection and CO₂ scrubbing to keep the environment safe. 

• Closed-Loop Gas Management Enables the removal of contaminated air and generation of nitrogen to address Pulmonary Oxygen Toxicity (POT). 

• Pre-Rescue Stabilisation Allows for internal pressure control and gas injection prior to escape or rescue operations. 

• Early Decompression Initiation Reduces pressure buildup and risk while preparing submariners for recovery. 

• Water Evacuation Support Provides gas injection to help clear flooded compartments before salvage. 

Key Components  

JFD’s DSVDS is engineered for fast mobilisation and vessel integration. The complete system includes: 

• Container 1: Gas control and regeneration 

• Container 2: Air and nitrogen generation 

• Subsea Booster System 
• Launch & Recovery System with Active Heave -Compensated Winch