SUB-FLEX™ Cable Protection Systems

Product Overview

Subsea Energy Solutions have patented a dynamic vertebrae bend restrictor known as SUBFLEX™. SUBFLEX™ Cable Protection Systems is a split bend restrictor that functions like a continuous bend stiffener and can be retro-fit to any subsea cable or risers.

Product Images


  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
  • Cable Protection Systems
Product Features

Location : installation onto any risers underneath FPSO vessel hulls. SUBFLEX™ Cable Protection Systems can also be utilised on any cables, umbilical’s or flying leads within free span locations.

Development : sought industry advice and took into consideration requirements such as purchase cost, rapid offshore assembly, rapid installation, elimination of maintenance requirements and standardisation of components.

Function : requires an applied load / force to achieve product deflection, opposite to the function of Static Vertebrae Bend Restrictors Function : provides stiffness / stiction / resistance against applied loads / forces, therefore providing enhanced protection to the subsea asset.

Flexibility : load / force resistance value can be easily adjusted. Clients can select identical (homogeneous) elements or similar (non-homogeneous) elements throughout the assembly, therefore designing the product to specifically suit the dynamic sea state condition underneath any specific FPSO hull.

Strength : offers standard assembly length of approx. 6 mtrs, bending moments in excess of > 500 kNm (50 Te / mtr) and shear capacity in excess of > 500 kN (50Te).

Benefit : provides significantly increased levels of bending, shear and fatigue protection to tied-in / connected-up, risers, cables, umbilical’s, against dynamic topside deployments, subsea installations and dynamic sea-state’s.

Benefit : will increases the design life of cables, umbilical’s and risers, hence saving significant time, cost and resource, procuring and installing replacement cables, umbilical’s and risers.

Benefit : retro-fit system and fully corrosion resistant materials (polyurethane & titanium bolts, compatible with FPSO hull CPS system) Benefit : modular / handleable” system, simple & easy for diver installation

Track Record : amonsst other projects, 03-off SUBFLEX™ Cable Protection Systems have been supplied to an International Oil Company (IOC) and successfully installed underneath the client’s FPSO.

Summary : Subsea Energy Solutions (UK) believe the SUBFLEX™ Cable Protection Systems product is the future of cable, umbilical and riser protection in free-span and dynamic environments and will significantly contribute towards the cost reduction of FPSO operation and maintenance. FPSO’s are a high cost / high insurance claim theatre and the quantity and number of claims are well documented by FPSO owners and operators relating to the repair and replacement of risers, umbilical and cables. Past projects have encountered issues due to the difference between theoretical analysis and practical performance, leading to fatigue, failure, production slowdown and ultimately shutdown. So there has never been a greater, more important time for the FPSO community to come together and lend support to a fully coordinated, fully standardised approach for FPSO subsea riser protection solutions.

SUBFLEX™ Cable Protection Systems guarantee a reduction of FPSO insurance claims and a reduction of FPSO operation & maintenance costs.

Please contact Subsea Energy Solutions (UK) on 00 44 (0) 1748 828580 / sales@subenesol.co.uk to request further information about our cable protection systems, company brochure or to directly discuss your projects requirements.

At Subsea Energy Solutions, Service & Quality Is Never An Accident, It Is Always The Result Of Intelligent Effort.

Clients & Track Record
Ref. Sectors Clients Specification
P-1193 Repsol Sinopec FPSO Bleo Holm (North Sea) SUB-FLEX™ Cable Protection Systems
P-1264 Korea Research Institute Of Ships & Ocean Engineering (KRISO) Jeju Island (South Korea) Pendulum Activated High Efficiency High Persistence 300 kW Floating Wave Energy Converter (WEC) SUB-FLEX™ Cable Protection Systems
P-1408 Global Tech 1 Offshore Wind Farm (Germany) SUB-FLEX-NT™ Cable Protection Systems
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