Denmark, known for its leadership in offshore wind energy, continues to expand its wind farm infrastructure along the North Sea and Baltic Sea coasts. In these demanding marine environments, the riser hang-off clamp system plays a vital role in subsea cable protection by firmly anchoring and sealing dynamic riser cables as they enter platforms or foundation topsides.
Engineered for extreme durability and marine exposure, Philson’s riser hang-off clamps are made from corrosion-resistant 316L stainless steel and feature a polyurethane sealing system that prevents moisture ingress and ensures long-term cable sealing. These systems support the full weight of the cable riser while protecting it from fatigue, vibration, and movement due to waves and currents, making them indispensable in Denmark’s offshore cable infrastructure.
Function in the Danish offshore environment
In Denmark's coastal waters, subsea export and inter-array cables must transition safely from seabed routes up into offshore substations or turbine foundations. The riser hang-off clamp system ensures that this transition point is:
• Securely fixed, bearing the full weight of the vertical cable riser
• Completely sealed, preventing the ingress of moisture, salt, and marine vapor
• Durable, capable of withstanding extreme cold, strong currents, and decades of corrosion exposure
Philson’s riser hang-off clamps—crafted with 316L stainless steel and sealed with high-performance polyurethane resin—offer superior performance in these demanding conditions. The split-body structure allows for efficient offshore installation without damaging pre-terminated cable ends, while its sealing system provides watertight protection for long-term operation.
Advantages in Danish projects
• Withstands North Sea wind, waves, and ice loads
• Compatible with monopile and jacket foundations
• Long service life, aligned with 25+ year offshore wind design cycles
• Reduces maintenance and offshore intervention risks
• Other coastal countries with wind or offshore oil activities
Riser hang-off clamp systems—essential for offshore wind and coastal energy projects
As global investments in coastal wind power and offshore oil and gas continue to grow, riser hang-off clamp systems are becoming a standard solution for safe and reliable subsea cable protection. Countries including Germany, the United Kingdom, Norway, China, and the United States all implement these systems in their offshore installations.
With strong mechanical support, watertight sealing, and a design life of 25+ years, Philson’s riser hang-off clamp system ensures stability and safety in both fixed-bottom and floating offshore environments. Hang-offs are generally used in conjunction with bend limiters or bend stiffeners, providing a complete solution to prevent cable overbending and enhance the integrity of subsea power transmission systems.
