d’ROP® is a dynamic Remotely Operated Survey Platform that borrows and combines technology and operating principles from existing ROVs, ROTVs and systems from the modern day dredging industry. Addressing many of the inherent limitations of compact free-flying ROVs and seabed crawler systems, the d’ROP is ideally suited to precision tracking operations in dynamic coastal environments.
The d'ROP is deployed vertically beneath the support vessel, deriving vertical position from a heave-compensated winch and combined LARS, with the on-board thrusters maintaining heading and fine adjustments to the lateral position.
Maintaining a fixed heading and altitude in relation to a survey line, cable or pipeline provides exceptional line-keeping ability in comparison to traditional mid-size ROV systems.
Providing significantly more thrust than an equivalent-sized ROV, the d’ROP's ability to hold station allows it to remain stationary, operate at slow speed for depth of burial surveying, or track at up to 4 knots for acoustic survey.
Coastal Remote Survey Solution
For remote shallow water cable and pipeline survey, the d’ROP excels in providing precise depth of burial data in those areas where compact ROVs usually struggle with the environmental conditions, and work-class ROVs add significant extra expense. Designed for operation from our 27.5m coastal survey vessel, Bibby Athena, the compact system is exclusively designed to operate effectively from 5.0m to 150m water depth.
Variety of applications
Whilst the d’ROP was designed primarily for precision tracking of buried cables and pipelines in coastal environments, using proven technology and off-the-shelf components the d’ROP can accept multiple sensors simultaneously
“It was very pleasing to see the Bibby Athena carrying out her depth of burial operations so safely, efficiently and to good effect over the Burbo Bank Extension Export Cable. The development of the use of the Dynamic Remotely Operated Survey Platform (d’ROP) with the PanGeo Sub Bottom Imager over the last 2 years has led to a very competent operation and I was pleased to see it utilised effectively for the first time on this project. It was of great benefit to the project to have Bibby be able to present the findings in person to the us at our offices shortly after demobilisation, and even during operations for specific interrogative tasks, for which the Bibby team were very flexible. I look forward to using the setup again on more planned cable depth of burial works.”
Gareth Ellis, Burbo Bank Extension Export Cable Survey Project Manager
Designed to partner Bibby Athena
The system has been designed initially for operation from the company’s custom-build survey vessel Bibby Athena. Deployed vertically through the vessel’s moonpool, the system relies upon the support vessel for forward propulsion, a bespoke heave-compensated umbilical winch and combined LARS for its vertical control with the on-board thrusters maintaining heading and fine adjustments to the lateral position.
The system is effectively a compact high powered work class ROV platform but with all the expensive and complicated bits that we don’t need for our survey tasks stripped off; no vertical thrusters, simplified ‘hands-off’ deployment and close to fully automated operation.
Spec Sheet: d'ROP