The Magazine for Underwater Professionals

May/Jun 2019


Rever secures North Sea projects for whole fleet

Dive support vessel 'Rever Sapphire'

Aberdeen, UK-headquartered subsea services provider Rever Offshore has announced the deployment of all four of its vessels since the start of April 2019.

The Rever fleet, which includes the saturation dive support vessels Rever Topaz, Rever Sapphire and Rever Polaris along with the heavy construction support vessel Normand Clipper, was fully employed for several key clients on projects within the UK sector of the North Sea.

The Rever Polaris, which has recently completed an eight-week dry dock, and the Normand Clipper have been working simultaneously on a large subsea decommissioning scope recovering flexible flowlines and various subsea structures. Prior to this, the Normand Clipper was configured in construction mode where she successfully completed a multiple flexible flowline installation project.

The Rever Topaz has been working on saturation diving IRM scopes and has now commenced a long-term commitment in the southern sector of the North Sea. The Rever Sapphire, having also focused on IRM scopes including sat diving, is now carrying out ROV survey and inspection works.

Barry Macleod, Rever CEO, said: “I am delighted to see our Rever Offshore fleet all fully operational again across all the service lines we provide; IRM, construction and decommissioning. We have exceeded expectations around vessel utilisation for the early part of the season and the market outlook is strengthening and showing positive signs of continued recovery which is encouraging, not just for Rever but for the wider industry too.”

DOF Subsea orders ROVs from Forum

Forum Subsea Technologies, USA, reports it has secured orders from DOF Subsea, Norway, to supply three of its Ultra Compact Perry XLX-C work-class remotely operated vehicles. DOF Subsea will deploy the vehicles onto three of its ROV support vessels for recently awarded projects in Brazil.

The systems will be manufactured at Forum’s UK facility at Kirkbymoorside in Yorkshire.

The compact 2000-metre rated 150HP XLX-C vehicles, which are coupled with compact Dynacon LARS designs, are the first of their kind to be delivered to the market. Forum said it has engineered the ROV footprint to suit the current specifications required by DOF Subsea and its prospective clients.

Kevin Taylor, Forum Subsea Technologies vice president of subsea vehicles, said: “Forum’s range of Perry ROVs are the most long-established and recognisable vehicles in the subsea industry due to their quality, reliability and flexibility.

“In total, DOF Subsea has more than 60 of Forum’s ROVs in their global fleet. As the market continues to pick up from a sustained downturn, it is reassuring to see this ongoing confidence in our systems which meet the operational resilience and safety standards our clients require.”

Ingve Osberg, DOF Subsea asset manager, said: “DOF Subsea is pleased with Forum and the long relationship providing DOF Subsea with the high quality of work-class remotely operated vehicles, including support needed for our ROV business.”

ROV for new submarine rescue vessel

Fugro, the Netherlands, has been awarded a multi-million-dollar contract to supply an advanced ROV system as part of a new submarine rescue vessel for the Republic of Korea Navy.

The system will enhance the operational capabilities of the auxiliary submarine rescue vessel (ASR-II) which is being provided by South Korean shipbuilder Daewoo Shipbuilding and Marine Engineering (DSME).

Designed and built by Fugro at its ROV production facility in Singapore, and with a water depth operating capability of 1000 metres, the ROV system will be installed as part of the rescue vessel’s onboard submarine recovery systems. Offshore trials will take place prior to the vessel entering operational service in 2022.

The ASR-II is the latest generation auxiliary submarine rescue vessel and will be equipped with a state-of-the-art saturation diving system (with a 300-metre depth capability) and a new deep-sea rescue vehicle (DSRV) for submarine crew rescues to depths of 500 metres.

Modus grows its fleet of hybrid AUVs

UK-based Modus has placed an order with Saab Seaeye, UK, for the next vehicle in its hybrid autonomous underwater vehicle (HAUV) fleet. The 3000-metre rated Saab Sabertooth will be delivered in the third quarter of 2019.

The company said the purchase continues to build upon the advanced technology development programme it initiated in 2012. Modus launched its first HAUV (also a Saab Sabertooth) in 2017 which has gone on to successfully complete major pipeline inspections and the trialling of subsea docking and residency, in a project backed by Innovate UK.

The new system will be equipped with extended autonomous endurance and increased thrust for high speed survey and will be prepared for the integration of advanced and high-resolution sensors for different types of applications and operations.

Jake Tompkins, CEO at Modus, said: “We are delighted to announce the continuation of our drive to develop and bring to market highly differentiated capabilities. This latest order demonstrates our commitment to provide game-changing performance, data quality and economic benefits to our customers. This is part of a significant programme to develop not only a fleet of autonomous vehicles, but also AI and machine learning methods for integrating data, data visualisation, remote vehicle control and mission planning. More announcements on this programme will follow.”

Sonardyne's SPRINT-Nav 700 selected for new under-ice AUV
  • A2KUI will replace the NOC's ALR-III, pictured here ready for deployment

The National Oceanography Centre (NOC), UK, has selected high-performance hybrid navigation technology from UK-based Sonardyne for the next generation of its Autosub autonomous underwater vehicle, targeted for under-ice operations.

The NOC will incorporate Sonardyne’s highest performing SPRINT-Nav inertial navigation system (INS) into the new 2000-metre depth rated Autosub, which is being specifically developed for carrying high-performance sensors on the most demanding research missions under polar ice, hence its name Autosub2KUI, or A2KUI.

SPRINT-Nav combines Sonardyne’s SPRINT INS sensor, Syrinx 600kHz DVL and a high-accuracy intelligent pressure sensor into a single housing, making it one of the smallest combined inertial navigation instruments on the market, according to Sonardyne.

“SPRINT-Nav’s tight integration of all the raw sensor data at a low level provides unprecedented navigational performance and precision for subsea vehicles. Consequently, SPRINT-Nav has consistently outperformed competing systems in trials carried out for a number of customers,” Sonardyne said.

The company’s oceanographic global business manager, Geraint West, said: “NOC selected SPRINT-Nav 700 to meet its requirements for an advanced dead-reckoning system in a single unit as the backbone of the A2KUI’s navigation system. The capability to plug in other navigation sensors to aid the AUV’s position was also critical and a second upward-looking Syrinx DVL is being incorporated to provide tracking on the underside of the ice.”

A2KUI will also be equipped for acoustic tracking using Sonardyne’s Ranger 2 ultra-short baseline (USBL) system, which is fitted to the UK research vessels RRS James Cook, RRS Discovery and the new polar research vessel RRS Sir David Attenborough.

Dr Alex Phillips, head of Marine Autonomous Systems Development at the NOC, said: “The development of Autosub2KUI by the NOC builds on the successes of previous generations of Autosub, including Autosub3, which has previously penetrated up to 60 kilometres under the ice from the ice-edge. Autosub2KUI will provide the UK science community with a next-generation AUV, equipped with state-of-the art sonars and camera systems to enable scientists to create detailed maps and establish habitat characteristics of the seafloor under the ice-covered polar regions.

“The missions planned for A2KUI are among the most demanding for any AUV in existence and Sonardyne’s SPRINT-Nav will be fundamental to the AUV’s ability to access the hostile under-ice environment in the polar regions. Gaining insights into these regions is critical to answering some of the biggest environmental scientific questions facing mankind, including climate change.”





Privacy Policy

Online Dispute Resolution