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Submarines and other vessels which contact fenders below waterline require a unique solution.
Trelleborg’s Hydro-Pneumatic Fenders are specially adapted to this application.
Features
Sub-surface contact face
Very low hull pressures
Variable draft
Prevents acoustic tile damage
Applications
Submarines
Some fast ferries
Semi-submersible oil rigs
Related Resources
Hydro-Pneumatic Fenders (HPNE)
Primarily used for berthing submarines and vessels that have low free board and high draft, which may result in fender contact below the waterline, Trelleborg’s HPNE fenders are designed and manufactured to be stronger and more durable than standard pneumatic fenders due to added pressure requirements.
This whitepaper details the critical comparison between the airbag and conventional manufacturing methods of pneumatic fenders, and their impact on the performance, safety and longevity of these fenders.
Try our new fender online tool, now developed in accordance with the latest PIANC WG211* guidelines.
The tool simplifies berthing energy calculations, helps you select the right fender, and generates a robust specification — all in just a few simple clicks. Save hours of work and streamline your fender selection process.
* A tool based on the latest BS 6349-4:2025 is currently under development. In the meantime, please contact Trelleborg for calculations in accordance with BS 6349-4:2025.