Pressure Hull Glands (PHG)
Maintaining the integrity of a submarine’s pressure hull is critical to protecting the life of the crew, as well as maintaining its operational capacity. The boat’s cable system is its central nervous system, delivering data and power to and from the command centre to the platform’s extremities. Wherever that cable system passes through the pressure hull, a potential weakness is created.
Reliable Hull Transitions
Pressure hull glands (PHGs) are by far the most reliable hull transitions available. Multiple cables are amalgamated in a complex thermoplastic moulding, with individual cables sealed and water blocked to prevent leaks. SMI PHGs can manage electrical, coaxial and optical conductors from single cables or up to 19 cables through a single small aperture in a boat’s hull. Our glands are continuously tested in production, then finally inspected, visually, radiographically and pressure tested in our on-site pressure vessels to ensure they will withstand the challenges of the ocean, as well as combat effects, for many decades.
SMI holds MOD Capability Approval for the design and manufacture of polyethylene moulded pressure hull glands and any other equipment with a polyethylene moulded sealing mechanism. We are the only manufacturer to hold this approval for a continuous 27 years, demonstrating our retained expertise.