JFD Global’s Communications Buoy System enables submerged submarines to maintain critical contact with surface teams, even while operating at depths up to 250m and speeds up to 2 knots.
Proven on in-service platforms, this system provides essential navigation and communication capabilities - ensuring secure, uninterrupted data flow during mission-critical operations.
Subsea Communication Without Compromise
Whether you're coordinating submerged operations or updating mission plans, the Communications Buoy gives you a secure, reliable link to the outside world - without surfacing. Designed for military-grade performance, the system integrates seamlessly with onboard navigation, radio, and communication networks.
System Components
Component |
Description |
Communications Buoy |
Equipped with GPS, VHF, and Iridium satellite systems for positioning, text, and call functionality. |
Optical Umbilical |
Supports >350m cable length with low attenuation, fibre-optic data transfer, and integrated power. |
Custom Winch System |
Hydraulic-driven, modular design with emergency cutter, bend restrictor, and automatic spooler. |
Internal Control Console |
Full control over buoy deployment and retrieval. Interfaces with onboard hydraulic, electrical, and communication systems. |
Key Specifications
- Operating Depth: Up to 250 metres
- Operating Speed: Up to 2 knots (head-on, ±45°)
- Sea State Capability: Operational up to Sea State 3
- Winch System: Hydraulic drive with pneumatic/hydraulic emergency release
- Power & Data: 220VDC transmission, optical fibre with spare copper conductors

Designed for Flexibility and Future Upgrades
JFD’s buoy system is built for adaptability. Whether your mission profile changes or your technology evolves, the system is ready to grow with you.
- Scalable buoy design for new systems and payloads
- Bandwidth expansion via existing umbilical
- Future upgrades for depth rating and sea state tolerance
- Optional electric winch drive conversion available

Built for Naval Integration
JFD’s Communications Buoy System is fully configurable to suit your platform:
- Available as a complete turnkey solution
- Or supplied as modular components for client-specific integration
- Interfaces with existing submarine navigation and comms systems
- Designed and qualified to defence and naval standards

Discover how our buoy systems can enhance your submarine's communication capability; above and below the surface.