UK-based offshore technology firm Osbit Limited has delivered a multi-function, prelay and backfill subsea plough to UK-based subsea cable installer Global Marine Group to support cable laying for an offshore wind installation.
Known as PLP240, the subsea plough was designed and built over 20 weeks, following a contract award in January. Final assembly and sign-off was completed at Osbit’s Port of Blyth facility, at the end of May.
Collaborating with Global Marine Group and its first client, Swedish energy company Vattenfall, Osbit designed the subsea plough with single-pass capability, enabling boulder clearance and pre-trenching to 1.7 m depth to help to reduce the cost of laying subsea cables for offshore wind installations. The plough is subsea adjustable and has a surveillance suite to accomplish accurate and effective trenching.
The plough can be reconfigured into backfill mode, which uses the same control and surveillance suite to monitor the cable and trench profile, enabling reliable backfilling while ensuring the safety of the cable at all times.
The plough is supported by Osbit’s control technology, which consists of an open source modular system that incorporates Osbit Integrated Logistics Support asset monitoring.
Global Marine Group director of engineering Martyn Drye, said “Our new PLP240 will allow us to reduce the time to first power production by shortening the windfarm construction phase, and therefore delivering an earlier return on investment for our developer clients”.