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Offshore Support Journal

Offshore Support Journal

Range sensors deployed on Østensjø offshore vessel

Tue 24 Jan 2017

Range sensors deployed on Østensjø offshore vessel
Bridge officers on Edda Ferd use RadaScan View to visualise adjacent structures (credit: Guidance Marine)

Østensjø Rederi has deployed Guidance Marine’s RangeGuard and RadaScan View systems on a platform supply vessel to minimise the risk of collisions with oil production ships. Both systems have been installed on 2013-built vessel Edda Ferd, which provides hose and deck support operations to floating production, storage and offloading (FPSO) vessels in the North Sea.

Edda Ferd is working for Shell UK over a five-year minimum period to support the oil major’s FPSOs. Initially it was working alongside the Curlew FPSO, which weathervanes around a fixed internal mooring system. It is working this year adjacent to the Haewene Brim FPSO on the Pierce oil field providing hose and other support operations.

The RangeGuard system is mounted port and starboard side of Edda Ferd to provide situational awareness in the vicinity of offshore production facilities. It is a target-less, all-weather device that measures the distance between a vessel and adjacent objects. The sensor provides bridge officers with distance information, which enables them to detect unseen objects, as a means of protecting the vessel. The information is displayed on the RadaScan View system on the vessel bridge.

Operators using RangeGuard on Edda Ferd could clearly visualise FPSO movements in real-time, said Østensjø. The Norwegian vessel owner said these systems improve the situational awareness of bridge officers and masters whilst operating alongside these FPSOs, enhancing the vessel’s and crew’s operational capabilities.

This was confirmed by UK-based Edda Supply Ships’ offshore area manager, Phil Brown. He said: “After discussions with Guidance Marine, we believed that this state-of-the-art distance measurement tool would be an enhancement for our crews’ operational capabilities. Edda Ferd was chosen to be the trial vessel in the fleet and was fitted with the system in September 2016. Early indications show that the system and its benefits are adding to the vessel’s operations in a positive safe manner.”

Edda Supply Ships, which manages Edda Ferd, requested an addition to the system that has been installed on the vessel. This was the use of a RangeGuard sensor for clearance verification at the stern of the vessel during docking in Aberdeen, UK. The sensor provides range and speed information during approach and departure to and from the quayside of the Scottish port.

For the master on Edda Ferd, Joar Andre Øyre, the system provides the crew with more information about the position of the vessel adjacent to offshore and port facilities. He added: “The RangeGuard system is user-friendly with easy-to-learn software. The user can be taught to monitor and operate the software without any difficulty because of the onscreen overview.”

Guidance Marine has engaged with other vessel operators to further understand their positioning requirements and offer a cost-effective approach to position reference sensor technology. It introduced the benefits to vessel operators at the European Dynamic Positioning Conference in London in February 2016. During that event, Guidance Marine business development manager Sasha Heriot explained how operators could position vessels close to oil production facilities while minimising the risk of collision.

There is a session on new reference systems and sensor technologies at this year’s European Dynamic Positioning Conference. This is being held on 7 February in London in parallel with the Offshore Wind Journal Conference and one day before Riviera’s Annual Offshore Support Journal Conference. During this session, there will be a review of the key features and performance of position reference sensors and discussions about how new technologies enhance the accuracy and safety of vessels.

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