LANKHORST RISER FINS
AND SHIMS
Reliable protection and storage of bare drilling riser strings, both on- and offshore
High-impact protection for drilling risers
Riser Fin protection systems are designed to safeguard bare risers and auxiliary lines from impact, while assisting alignment during handling and deployment.
- High protection of bare pipe against any form of impact
- Suitable for a wide range of riser diameters and buoyancy OD configurations.
- Enables faster riser deployment and recovery
Engineered for protection of your bare pipe and auxiliary lines
Lankhorst Riser Fins are designed to protect bare drilling riser joints and auxiliary lines from impact, while guiding the riser through the riser tower during deployment and retrieval. Made of high-impact resistant, neutral buoyant thermoplastic, the fins duplicate the outer diameter of buoyant joints for smooth handling and minimal drag. The support ring system is developed to enable horizontal stacking of drilling risers up to 14 levels high.
Why choose Lankhorst Riser Fins and Shims?
Impact resistance bare pipe and auxiliary linesProtects riser from any form of impact and guides the riser through the riser tower.
Easy handling and installationNo special equipment is needed for installation and the weight make them relatively easy to handle.
Horizontal stackable up to 14 levels highInstallation of half rings or shims in specific locations enables risers to be stacked horizontal.
Varying OD’s available and weather resilience5 Ft lengths fins for full coverage, in different material grades for extreme weather conditions.
Excellent project managementDedicated project managers ensure seamless execution, on-time delivery, and project success.
Extensive testing possibilitiesIn-house testing facility, including our own impact tower.
Curious how we can protect your subsea line?
Please contact one of our Regional Business Managers
Lankhorst Riser Fin System design
Our patented Riser Fin Protection System consists of multiple fins per joint (typically 5–8), securely tensioned to the riser with Kevlar strapping and stainless steel tensioners. The fins replicate the OD of buoyant joints for consistent handling. Their open structure reduces drag, while robust thermoplastic material ensures durability in harsh environments from the Arctic to the tropics. All components are easy to install, transport, and reuse.
The standard length of a riser fin is 5ft, with a complete system consisting of multiple sets for full coverage of the joint. The Support Ring System is developed to enable drilling riser to be stacked horizontal up to 14 levels high. Guiding cones have been designed by Lankhorst to assist in the positioning and placement of the riser joints when stored vertically in the riser bay.
Optimized for installation
Riser Fins and Shims are designed for easy on- or offshore assembly. The use of Kevlar strapping and stainless-steel tensioners allows for secure fastening without special tooling. With all components under 30 kg installation is efficient and safe. The fins and shims are packed on standard wooden pallets and are easily stackable inside 20ft or 40ft ISO containers, ensuring optimum use of space and minimizing handling and transport costs.
The material used for production is selected based upon its compression and impact resistance in the diverse weathers conditions of the Arctic and the Gulf of Mexico, and anything in between. With a proven track record in major offshore projects worldwide, Lankhorst delivers reliable, high-performance, field-proven pipeline protection tailored to industry needs.
Lankhorst Riser Fin projects
Aker Solutions
NOV
Stena Drilling
Curious how we can protect your subsea line?
Please contact one of our Regional Business Managers