Submerged Signal Ejector (SSE)

JFD Global’s Submerged Signal Ejector (SSE) is a safety-critical system designed for submarines to launch signal flares and compatible hardware from depth - most commonly in emergency situations.

Operated from within the pressure hull, the SSE provides a safe and effective method of deploying markers or emergency signals without surfacing.

Purpose-Engineered for Submarine Safety

The SSE is fully integrated into the submarine’s pressure hull systems, allowing crew to deploy emergency payloads through the casing at depth. Compatible with leading signal devices such as the T-1630A/SRT Submarine Emergency Position Indicating Radio Beacon (SEPIRB), it’s a trusted component for modern naval operations.

Key Features

Feature	Description
Pneumatic Operation	Reliable launch mechanism powered by onboard air systems.
Emergency Override	Backup device included in case of pneumatic failure.
Cable Cutting Device	Ensures safe release and detachment of deployed signals.
Flare Recovery Device	Optional system for retrieval of unused or test flares.
Internal Loading	Can be loaded from within the submarine’s pressure hull for secure handling.

Certified for Performance and Safety

Every JFD SSE is manufactured to meet rigorous naval, environmental, and safety standards:

CE Marked
DNV-RU-NAV Pt.8 – DNV Rules for Naval Submarines
PD5500:2021 – Fusion welded pressure vessels
ASME PVHO – Pressure Vessels for Human Occupancy
MIL-STD-901D – High-impact shock testing
MIL-STD-167 – Mechanical vibration standards
MIL-STD-810G – Environmental durability testing

Material Certifications Include:

Super duplex, duplex, 316 stainless steel, aluminium bronze, and certified structural steels (e.g. Bumaz SDX109, Ferralium).

Built for Integration and Operational Confidence

JFD’s SSE is not only rugged and reliable ; it’s designed for seamless integration into new-build or retrofit submarine platforms. With surface treatment for corrosion protection and military-grade componentry, it's built to withstand the extreme conditions of undersea operations.

James Fisher is a global supplier of trusted engineering services across the industries we serve, with an unrivalled ability to develop innovative solutions that meet the constantly developing needs of our customers operating in challenging environments.

With decades of experience supporting military diving and submarine systems, JFD delivers the tools navies need to maintain readiness, safety, and mission assurance, when it matters most.

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