--- title: Jacket inspection in high tidal conditions --- [Skip to content](https://hprrov.com/jacket-inspection-in-high-tidal-conditions#main-content) [![](https://hprrov.com/hs-fs/hubfs/HPR_no_tagline_registered_WHITE-02.png?width=1134&height=207&name=HPR_no_tagline_registered_WHITE-02.png)](https://hprrov.com?hsLang=en) - [About](https://hprrov.com/about) - [Sectors](https://hprrov.com/sectors) - [Offshore Wind](https://hprrov.com/sectors/offshore-wind) - [Oil & Gas](https://hprrov.com/sectors/oil-and-gas) - [Nuclear & Utilities](https://hprrov.com/sectors/nuclear-and-utilities) - [Marine & Shipping](https://hprrov.com/sectors/marine-and-shipping) - [Infrastructure & Civil Engineering](https://hprrov.com/sectors/infrastructure-and-civil-engineering) - [Aquaculture](https://hprrov.com/sectors/aquaculture) - [Capabilities](https://hprrov.com/capabilities) - [Project Portfolio](https://hprrov.com/projects) - [News](https://hprrov.com/news) - [Get in touch](https://hprrov.com/contact) Search - There are no suggestions because the search field is empty. Project Portfolio # Jacket inspection in high tidal conditions INDUSTRy & client Offshore wind service provider Location Taiwan SERVICES - ROV Inspection and Survey - Splash zone inspection TECHNOLOGY - Compact ROV Fleet ### thE CHALLENGE The client identified a persistent operational gap; a three-legged jacket structure at an offshore wind farm in Taiwan was going under-inspected due to extreme tidal conditions. Previous inspection windows were restricted to approximately one hour around slack-tide. Outside that window, no ROV provider had  demonstrated the ability to hold station and deliver usable inspection data. If the problem remained unsolved, O&M costs would increase due to the small operating window for the inspection scope, while the risk would also increase due to lack of inspection data – such as corrosion,  impact and structural wear. This could lead to unplanned operational downtime and revenue loss for the operator. The client initiated a structured capability trial, engaging HPR to determine whether compact high-current ROV technology could expand that window into a commercially viable inspection  programme. The scope required HPR to: - Inspect a three-legged jacket structure in currents well above 0.7 knots - Operate in half a metre visibility conditions, below 12 metres water depth - Navigate significant debris, fishing nets, and ropes present on and around the structure - Deploy from the client's existing CTV without a dedicated power generator for ROV use - Demonstrate repeatable, inspection-grade performance across multiple dives ### thE SOLUTION HPR provided a fundamentally different approach to offshore inspection – taking into account environmental conditions such as high-currents, weather, water depth and visibility. HPR works with its clients to establish the best delivery model based on asset type and infrastructure already contracted by the operator – whether it’s an SOV, CTV or from the platform itself. Central to this is HPR’s approach to validation and testing before offshore deployment. By testing and modifying the system in a controlled tank environment before going offshore, HPR eliminates uncertainty, optimises performance, and gives pilots the real-world high-current flying experience needed to operate safely and efficiently from day one. #### Pre-deployment validation Full system validation conducted in similar conditions. System modifications made based on trial performance data. ROV pilots gained direct exposure and experience flying in similar conditions before entering the field - reducing operational risk. #### High-current capability HPR’s ROV was specifically designed and optimised for currents exceeding 1.0 knot. High forward and lateral agility enabled station-keeping throughout the tidal cycle, not just at slack-tide. Lightweight, fast-deployment design operates from CTV onboard power. #### MULTI-CAMERA IMAGING IN LOW VISIBILITY Three camera solutions enabled high-quality capture in low visibility below 12 metres water depth. Operators could select the optimal imaging mode for the conditions encountered. Delivered inspection-grade imagery that would not have been achievable with a single-camera system. Rear view camera to observe tether behaviour in challenging conditions. #### FLEXIBLE, LOW-FOOTPRINT DEPLOYMENT Lightweight compact design operated directly from the CTV’s onboard power - no dedicated generator required for ROV power. Faster, simpler launch and recovery compared to traditional ROV systems. Suitable for deployment from a CTV, SOV, or directly from the platform, enabling flexible delivery models. ### thE RESULTS - HPR operated continuously in currents exceeding 1.2 knots - well beyond the 0.7-knot threshold that limits competing ROV solutions - The client's effective daily inspection window extended from approximately 1 hour to 4 hours - four times the coverage previously possible - Subsea damage on the jacket structure was identified for the first time, enabling the client to act before it escalated into a costly structural or compliance issue for the operator - Operated from CTV onboard power with no dedicated generator required for ROV use - reducing vessel footprint and cost - Fewer CTV transfer days required to complete the full scope, directly reducing the client's operational carbon footprint - Pre-deployment tank validation at Flowave eliminated offshore surprises and contributed to a smooth, incident-free mobilisation - Validation in these high-current conditions gives operators greater confidence, strengthening the client’s position as a progressive solutions provider 0+ knots current capability 0x more inspection time per day 0 dedicated generators needed 0st successful inspection on this wind farm ![PHOTO-2026-03-26-11-25-02](https://hprrov.com/hs-fs/hubfs/PHOTO-2026-03-26-11-25-02.jpg?width=1280&height=720&name=PHOTO-2026-03-26-11-25-02.jpg "PHOTO-2026-03-26-11-25-02") ![Visibility](https://hprrov.com/hs-fs/hubfs/Visibility.jpg?width=1920&height=1080&name=Visibility.jpg "Visibility") ![Taiwan 2026 - 9](https://hprrov.com/hs-fs/hubfs/Taiwan%202026%20-%209.jpeg?width=2000&height=1500&name=Taiwan%202026%20-%209.jpeg "Taiwan 2026 - 9") ### thE IMPACT This inspection trial demonstrated that the client’s decision to seek a specialist solution - rather than accept the limitations of conventional ROV providers - delivered measurable results. A persistent operational and asset integrity gap has been closed, with subsea damage identified, allowing the inspection programme to proceed on a commercially viable basis. The trial also validated a deployment model that is directly transferable to other assets in high-current environments. HPR’s CTV-compatible, generator-free solution is operationally leaner, faster to mobilise,  and less carbon-intensive than traditional approaches. For assets where inspection has been constrained by vessel cost or current limitations, this model offers a credible alternative. Operators with assets in Taiwan - and others who understand how extreme the conditions are in the region – now have greater confidence in this solution. The client’s investment in this trial has reinforced its reputation as a service provider that pursues smart, evidence-based solutions - and positions them to apply that same capability across further inspection scopes. ### LET'S TALK ABOUT YOUR OFFSHORE WIND PROJECT Whether you're an owner, operator or service provider in the offshore wind sector, we'd love to hear about your upcoming projects and current challenges. Complete the form below and a member of our team will be in touch. [![](https://hprrov.com/hs-fs/hubfs/HPR_no_tagline_registered_WHITE-02.png?width=1134&height=207&name=HPR_no_tagline_registered_WHITE-02.png)](https://hprrov.com?hsLang=en) HIGH PERFORMANCE ROBOTICS AT DEPTH Locations ##### OFFICE 2 Minto Place Aberdeen, AB12 3SN ##### Workshop 2 Minto Place, Altens, Aberdeen, AB12 3SN Get in touch ##### Contact  +44 1464 851 700 info@hprrov.com © 2025 All rights reserved. Powered by [True North Advisors](https://truenorth.scot). 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