Established in 1986, Tension Technology International (TTI) is a global, independent consultancy specialising in flexible tension member systems for the offshore and renewable energy sectors.
With experts located across the UK, USA, China, Netherlands, and India, TTI offers deep technical insight and practical expertise spanning the full lifecycle of mooring systems—from design and development through to procurement, installation, testing, and failure analysis.
TTI has played a leading role in pioneering mooring solutions for challenging offshore environments, including early innovations that enabled deepwater oilfield development off the coast of Brazil. As technology-neutral practitioners, TTI takes a rigorous, root-to-branch approach to technology qualification (TQ), assessing every component of mooring systems, from the fibre/yarn level to fully coupled global structural analyses.
Our areas of expertise include:
Yarns & fibres, wire and synthetic ropes
Chains, cables, umbilicals, and elastomers
Rope interfacing systems (e.g., fairleads, tensioning systems)
Riser Protection Nets (RPNs) and subsea tethers
Forensic analysis, inspection, testing, and qualification of all system components
TTI is trusted by clients worldwide to deliver technically sound, unbiased advice that ensures performance, safety, and reliability in complex marine environments.
The TTI Group comprises a parent company (TTI) and two specialist subsidiaries, each contributing unique expertise to the engineering and offshore sectors.
TTI Testing Ltd
Based in Wallingford near Oxford, TTI Testing Ltd operates our state-of-the-art materials testing laboratory, delivering high-precision testing services to support engineering design, quality assurance, and research applications.TTI Marine Renewables Ltd
Located in Inverness and established in 2015, TTI Marine Renewables Ltd focuses on the offshore renewables market, providing advanced technical solutions and consultancy to support the growing demand for sustainable marine energy.
Software Development & Engineering Tools
TTI is the developer of OPTIMOOR, a world-leading ship mooring analysis software licensed globally. OPTIMOOR offers powerful 2D/3D modelling capabilities and advanced features including:
Static and Dynamic Analysis
Wave Response
Ship-to-Ship Operations
Tsunami Effects
Passing Ship Interactions
Additional proprietary software developed in-house includes:
Our team also maintains active licences and expertise in leading industry-standard software such as Orcaflex, HydroSTAR, and various CAD & FEA platforms. These tools are run on our high-performance multi-core workstations to support detailed modelling and simulation work across a range of marine and structural engineering projects.
Industry Standards and Thought Leadership
TTI has played a key role in shaping industry standards through active participation in numerous working groups, including those led by the Oil Companies International Marine Forum (OCIMF), as well as standards organizations such as ABS, DNV, and IEC.
Beyond its contributions to standards development, TTI has published an extensive range of technical papers and is a regular contributor to leading industry seminars and conferences.
Optimoor
World Leading Mooring Analysis Software
Services
Consulting services for Rope, Textiles and Marine Systems