Tri-Strakes® Lite
Tri-Strakes® Combi
Tri-Strakes® Combi combines the stackability of the Tri-Strakes® Lite with the load resilience of the Tri-Stakes® Stinger.
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Tri-Strakes® Stinger
Tri-Strakes® Stinger is a vortex induced vibration (VIV) suppression system designed for deepwater steel catenary risers and flowlines, reducing fatigue damage caused by vortex shedding and improving long-term pipeline performance.
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AIS is a global leader in the engineering, manufacture and application of insulation and passive fire protection systems, as well as buoyancy and SURF (subsea, umbilicals, risers and flowlines) products.
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Tri-Strakes® Lite

Lightweight VIV protection for offshore pipelines

Tri-Strakes® Lite is a cost-effective vortex induced vibration (VIV) suppression system designed to protect free spanning pipelines and risers from fatigue damage, improving performance and preventing failure in offshore environments.

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Benefits

Lightweight efficient VIV suppression system

Tri-Strakes® Lite uses overlapping interlocking mouldings with three-start helical strakes to reduce vortex induced vibration. It is lightweight, stackable and cost-effective, enabling fast installation while maintaining structural integrity and long-term performance in offshore pipeline and riser applications.

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Lightweight stackable design
Each section of the system has been designed as a single, lightweight component, enabling quick and easy pre-install onshore or install offshore. The design permits the system to be stacked efficiently during shipping which also reduces space taken up on the vessel.
Fast production
Innovative manufacturing process enables production up to six times faster than traditional systems, significantly reducing lead times and improving project delivery efficiency for offshore pipeline protection.
VIV control
Reduces vortex induced vibration in free spanning pipelines and risers, preventing fatigue damage such as girth weld failure and extending operational life in harsh offshore conditions.

Specifications

Applications

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The new AIS website is now live
With a fresh look and simple navigation, we are pleased to announce that the new AIS website is now live.
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October 1, 2026
AIS completes acquisition of Matrix Composites & Engineering
Marking the next phase of its growth strategy, AIS is delighted to announce that it has received all necessary approvals and completed the acquisition of Matrix Composites & Engineering, a leading Australian provider of advanced composite materials and subsea engineering solutions.
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July 23, 2026
LS Cable & System awards contract for Taiwan’s Fengmiao offshore wind project
NjordGuard cable protection systems will protect the inter-array cables for the project’s fixed-bottom wind turbines.
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