- Markets
- Oil and gas
- Marine
- Nuclear
- Defence
- Transport and infrastructure
- Renewable energy
- Ports and terminals
- Construction
- Services
- Inspection and monitoring
- Lifting and handling
- Marine services
- Mooring and fendering
- Nuclear equipment and services
- Offshore support
- Design and engineering
- Submarine rescue
- Subsea
- Investors
- COVID-19
- Share price summary and chart
- Major shareholders
- Financial information
- Board of Directors
- Advisors and registrars
- AGM information
- Investor news (RNS)
- Governance
- Investor relations contact information
- Be ScamSmart
- Condition monitoring
- Construction plant productivity and safety
- Onshore geotechnical monitoring
- Load cells
- Marine safety systems
- Nuclear plant characterisations
- Offshore safety systems
- PyroSentry™
- Radiation detection equipment
- Strain rings
- Structural monitoring
- X-ray inspection systems
- Container Weight System™
- Crane overload monitoring
- Hose and umbilical reelers
- Lifting equipment
- Load links
- Load shackles
- Marine cranes
- Winches and hoists
- Fuels infrastructure
- Mermaid®
- Offshore personnel
- Offshore Wind Management System®
- Ship management services
- Ship-to-ship transfers
- Ship-to-Turbine™
- Shoreside support
- Surface preparation
- Vessel chartering
- Wind turbine blade inspections
- Site preparation
- Installation and commissioning
- Operations and maintenance
- Digital solutions
- Anchor and chain monitoring
- Deck and mooring equipment
- Fendering
- Flotation
- Line tension monitors
- Mooring load monitoring
- Towing load monitoring
- Building infrastructure and services
- Containerised systems
- Engineered containments
- Manipulators and tooling
- Mechanical and remote handling
- Radiation tolerant equipment
- Remote inspection systems
- Safety and control systems
- Shielded equipment and facilities
- Trials, training and simulation
- Artificial lift
- Compressors and breathing air compressors
- Centrifugal and positive displacement pumps
- Heat suppression
- Offshore equipment
- Offshore pipeline services
- Steam generators
- Safety slick joint
- Safety bails
- Well test support
- Aerospace engineering
- Fabrication
- Hazardous area design and engineering
- Marine projects
- Mechanical and electrical design
- Specialist engineering design
- Specialist structures consultancy
- Atmosphere sampler
- ELSS pods and bags
- Equipment assessment and support
- Flyaway ROV systems
- Inflatable freeboard extender
- Intervention targets
- James Fisher Submarine Rescue Service
- LR5 manned submersible
- Submarine escape training tower
- Submersible mating targets
- Subsea operations training
- Transfer under pressure systems
- Dive equipment
- Diving services
- Remotely operated vehicles (ROVs)
- Salvage
- Subsea excavation
- Subsea engineering
- Containerised deployment solutions
- Launch and recovery systems
- Swimmer delivery vehicles
- Special operations consultancy
- Special operations training
- Company reports, accounts and presentations
- Dividend centre
- Financial calendar
- Five year record
- Sector review
- Our stakeholders
- Committees
- Principal risks and uncertainties
- Business ethics, anti-bribery and corruption policies
- Modern slavery act transparency statement
- Gender pay report
- Tax strategy
- Health and safety
- Our people
- The Sir John Fisher Foundation
- Board changes - Remuneration
- James Fisher Renewables backs APAC offshore wind growth with six in-market appointments for Korea and Taiwan
- James Fisher and Abu Dhabi’s NMDC Group sign strategic agreement
- James Fisher Renewables commits to further investment in Taiwan to support local government
- JFD completes three consecutive Submarine Rescue Exercises in Quarter One 2022
- Archive
- JFD conducts a hydrostatic pressure test
- James Fisher increases offshore wind asset operations and maintenance (O&M) portfolio
- JFD hosts a dive tank test and demonstration
- JFD tests a submarine hull at their National Hyperbaric Centre
- Archive
- James Fisher Renewables backs APAC offshore wind growth with six in-market appointments for Korea and Taiwan
- James Fisher and Abu Dhabi’s NMDC Group sign strategic agreement
- James Fisher Renewables commits to further investment in Taiwan to support local government
- JFD completes three consecutive Submarine Rescue Exercises in Quarter One 2022
- Archive
06 July 2012
Strainstall Marine provides crucial monitoring technology for new wave energy convertor.
Vigor Wave Energy AB has selected Strainstall Marine subsea load shackles to monitor the mooring loads on a prototype of its highly innovative wave energy system.
The Vigor Wave Energy Converter harnesses the energy of ocean waves to produce a clean, completely renewable source of electricity. The concept is based on an array of large, flexible hoses into which pulses of seawater and air are introduced by the action of successive waves. The fluid is forced along the length of each of the hoses by the motion of the waves on its exterior, and the output of the array is connected to a central hub where the internal water flow is passed through a turbine which drives an electric generator.
With prototype testing about to commence, a crucial issue for the Vigor Wave Energy is to establish and quantify the static and dynamic forces acting on the device’s mooring lines during operation in a range of sea conditions. To achieve this, the company has selected Strainstall Marine subsea load shackles to secure their mooring lines. Shackles are standard equipment for chain and rope assemblies, but the Strainstall Marine subsea load shackle incorporates a load measuring pin in place of the usual solid component. This load cell provides a direct measurement of the force transmitted by the line to which it is attached, and is completely unaffected by the external water pressure that it is subjected to.
“With these results we will be able to say a great deal about the dimensioning, the design and the survivability of the system – based on real data, not just scale tests and theory,” said Vigor Wave Energy Engineer Nicolas Wolf. “Of course this will save us a lot of money in the future, not just through the dimensioning itself, but also by allowing us to focus more on other development issues. The load shackle’s measurements constitute a very direct way for us to move from theory to reality”.
“The Strainstall Marine subsea load shackle is just one of the high quality measurement products engineered for applications in the challenging offshore environment that we are supplying to the marine renewable sector,” said Simon Everett, Strainstall Marine MD. “With options ranging from single or multiple installations to a fully integrated solution that enables customers the ability to log data for analysis, or transmit via supervisory control and data acquisition systems, these products provide crucial data for the developers both of new technology concepts such as Vigor Wave Energy, as well as for those engaged in commercial scale operations.”