All Stories

Rotech Subsea Secures 2nd Phase Cable Trenching Contract at Taiwan OWF

Subsea trenching and excavation pioneer, Rotech Subsea, has secured a contract for a second phase of vital infrastructure works at a state-owned wind farm in offshore Taiwan - and at the same time has secured a commission to supply an additional spread of equipment for a wholly new campaign for the same client which will run concurrently.

With another campaign in the country set to commence in early 2021, the company will execute three campaigns simultaneously in Taiwan as well as completing an umbilical post trenching scope offshore Melbourne, Australia.

Inter-array & export cable trenching

Aberdeen-based Rotech Subsea completed an initial scope of work at the Taiwan site in Q2/3, 2020 which saw its state-of-the-art TRS1 suspended jet trencher carry out an inter-array and export cable trenching scope for a major long term tier one client.

The scope of work consisted of burying a total of 21 cables - four export and 17 array - to client specification of 2.1m DoL. The project was completed in two stages. The TRS1 tool was selected by the client due to its unparalleled technical and performance capabilities resulting in increased productivity and a reduction in total project costs.

The subsea spread of equipment was mobilized for the two-stage scope of work on the Willem De Vlamingh and Grand Canyon II, deployed using the ships’ cranes to water depths ranging from 8-29m LAT.

Stage one of the project was a success with four export and 17 array cables buried with ease. Soil conditions were soft sands, however, large sections of stiff clay with strengths up to 80kPa were experienced. Despite this, the TRS1 excelled and lowered the cable with two passes at an average rate of 4m/min reaching speeds up to 10m/min in some sections.

“The second phase of this project is set to commence in early 2021 with the client having already requested to keep the TRS1 tool on stand-by in Taiwan to ensure its availability,” said Director of Subsea, Stephen Cochrane. “It’s fantastic that the client has also requested another TRS1 for an additional campaign which will run concurrently.

“We are delighted to secure this follow-on work and new campaign, which firmly establishes us as the method of choice for cable trenching in the region. Our experience and performance in these scopes mean we are now seeing more and more that our Suspended Jet Trenchers are being chosen as a primary method for trenching, over other contact trenching systems and ploughs. Because of the enhanced capabilities of the RS tools, they can provide deeper and narrower trenches than ever before, with trenching speeds more than double that of competing Mass Flow Excavation tools.”

Rotech Subsea’s in-house research, development and engineering team has created a suite of 14 tools that has established Rotech Subsea as market leader in providing non-contact Controlled Flow Excavation (CFE), Suspended Jet Trenching technology and related subsea services. The dedicated in-house R&D team continue develop their technology, with further game changing enhancements to CFE due to be unveiled in 2021.


Hamburg’s HafenCity University and Subsea Europe Services Team Up for Hydrographer Training

Donation of multibeam technology and support strengthens hydrographic research capabilities of university’s new dedicated survey vessel

Marine survey technology specialist Subsea Europe Services GmbH has pledged to support HafenCity University train a new generation of expert marine hydrographers by ensuring availability of the latest hydroacoustic technology aboard the new survey boat, ‘DVocean’.

Based in Hamburg, HafenCity University is the only facility in Germany certified to the highest standards of training for marine surveyors. Its hydrography program was modernised in 2016 and subsequently examined by the International Board on Standards of Competence for Hydrographic Surveyors and Nautical Cartographers of the International Federation of Surveyors (FIG), the International Hydrographic Organization (IHO) and the International Cartographic Association (ICA), and accredited according to the “Standards of Competence of Hydrographic Surveyors” at Category A.

2 DVOcean water Credit Hafencity Univers

Subsea Europe Service’s systems enable training and scientific projects on DVocean. Credit HafenCity University

Hydrography is a popular specialization in HafenCity University’s two-year Master of Science Geodesy and Geoinformatics course, which is taught in the English language with international students making up three quarters of those attending. The 8 meter long, 2.65 meter wide DVocean survey boat is an essential component of the course, as well as various marine education and research programs at the university.

“With DVocean we have a modern hydrographic survey platform to assist in both training and research,” said Mona Lütjens, Research Assistant Hydrography and Geodesy, HafenCity University. “Our partnership with Subsea Europe Services means that tutors, students and researchers have easy access to cutting-edge multibeam technologies on DVocean, so that teaching and scientific projects can always be carried out to the highest standards.”

“We are proud to be part of the HafenCity University students’ journey to becoming professional hydrographers and look forward to developing the partnership in the future, to offer more project and data focused support for research and commercial operations aboard DVocean,” said Sören Themann, CEO, Subsea Europe Services GmbH.

Magseis Fairfield Awarded Multiyear OBN Contract on the NCS

Magseis Fairfield has been awarded a contract for the provision of Reservoir Monitoring Source Services related to Permanent Reservoir Monitoring (PRM) and 4D OBN monitor surveys, by ConocoPhillips Skandinavia AS on the Norwegian continental shelf.

Revolutionizing Subsea Work on Wells

Aker BP is the world’s first operator to utilize the subsea control system SCILS from Optime Subsea. This system simplifies installation, maintenance and plugging of subsea wells. Through SCILS Aker BP can reduce its costs for control systems in well operations by more than 50 percent. 

Baker Hughes Launches engageSubsea Remote

Baker Hughes (NYSE:BKR) announced the successful launch of the engageSubsea remote – an extension of the engageSubsea platform. engageSubsea remote serves as an equipment inspection tool, technical support and operational management platform, and is designed to drive operational excellence and increase capital productivity for offshore oil and gas operators.   

Saab Seaeye Delivers 3rd Falcon ROV for South American Aquaculture

Ideal for their aquaculture work, a third Seaeye Falcon has been delivered to Chile-based Underdeep Solutions.

Reliability when working in extremely remote locations is a key reason for adding another Falcon to their fleet, says Underdeep Solutions.

Boxfish Research ROV Makes Record Breaking Dive

Boxfish Research announces record breaking depth range during its latest deep sea mission in New Zealand. This is the first underwater deployment conducted by a small, battery-operated remotely operated vehicle (ROV) to reach 710 meters, exceeding the industry standard.


Corporate Headquarters

Ocean News & Technology
is a publication of TSC Strategic

8502 SW Kansas Ave
Stuart, FL 34997