In offshore wind, oil, and gas operations, the Hang-off Assembly is a critical structural component. It is designed to secure subsea power cables or umbilicals, transferring their substantial axial loads from the installation vessel to the offshore platform (Jacket, Monopile, or Topside Deck).
Beyond simple fixation, our hang-off systems provide a robust mechanical interface and reliable sealing to ensure the long-term integrity of the cable infrastructure.
Key System Configurations
1. Engineered for Every Stage
Temporary Hang-offs: Designed for rapid deployment and secure holding during the critical cable-pulling and installation phase.
Permanent Hang-offs: Built for decades of service life, providing long-term fixation and environmental sealing for the cable's operational lifespan.
2. Strategic Positioning
Installation Point: Typically mounted at the top of J-Tube or I-Tube exits.
The Interface Layer: It acts as the critical transition point where the subsea cable moves from the external marine environment into the protected topside equipment areas (junction boxes, switchgear, and transformers)
Total Protection: Integrated Solutions
A hang-off does not work in isolation. To ensure the safety of the entire cable string, we provide an integrated protection ecosystem:
1. Above the Hang-off: Clean, secure cable management as the core moves toward the transition piece.
2. Below the Hang-off: Bend Restrictors/Stiffeners: To eliminate the risk of over-bending at the tube exit.
3. Centralizers: To maintain precise cable alignment within the J-tube.
4. Abrasion Sleeves: For high-level impact and friction protection in the splash zone.
Custom Offshore Solutions
We specialize in providing tailored hang-off solutions that match your specific riser umbilical requirements. From high-load deepwater projects to shallow-water wind farm connections, our engineering team ensures your subsea assets are secured with precision.
