Yet a milestone is reached at the Johan Castberg development in the Barents Sea. An anchor system of enormous dimensions is currently being deployed at the oilfield, and Island Victory is chartered for the job. This is one of the most comprehensive anchoring projects globally in 2020; preparing for the arrival of a floating production storage and offloading unit (FPSO) which will be processing and storing oil from the 30 wells on the seabed when the production starts in 2022. Client Ocean Installer and end customer Equinor cooperates closely with the Company on this project.

Island Offshore starts Johan Castberg anchor system job

“Weight and logistics in this project have called for good preparations, and we have spent much time planning together with client and customer. Each suction anchor weighs between 90 and 105 tonnes and is between 13 and 17 metres high. Island Victory loads five of these giants on board in one go,” the Captain on board Island Victory tells, and continues:

“In addition, the weight of the 170mm chain is 600kg per metre. Compared to a regular offshore anchor handling chain of 84mm the weight of the chain is not only double – it is four times as heavy!”

On the first trip to Johan Castberg, five anchors and five anchor chains were loaded on board the vessel. The objective is to set two anchors a day, as well as attaching anchor chains to each anchor. Three trips back and forth to Polarbase in Hammerfest are planned to get all anchors loaded. When all fifteen anchors are embedded into the sea floor, the installation of wire and top chain can start. This is placed on the seabed ready for the FPSO to hook up.

“Our job is to prepare everything before the FPSO arrives at the field. In addition to setting anchors and lines, the seabed floor conditions must be documented as well. Each metre of chain we place on the seabed is filmed by two work ROVs (remotely operated vehicles) operated by C-Innovation. These ROVs are equipped with arms making them able to perform tasks in addition to observing the operation beneath the surface. We use them in all types of jobs, the Captain explains.

As a preventive measure with reference to COVID-19 all parties have agreed to reduce crew for this job, to avoid cabin sharing. The project operation team from  Ocean Installer and Equinor amounts to 67 persons in addition to the vessel crew, and the experienced Captain cannot praise the project team highly enough:

“I can’t recall the last time I took part in such a smooth-running project. The project team has cooperated closely all the way; we are well prepared and coordinated - much due to co-training on simulators in advance. The atmosphere on board is creditable!”

Before commencing the job at Johan Castberg, Island Victory was engaged by the same client and end customer at Askeladd where large subsea manifolds was deployed and extensive survey and subsea work was done. This project marked the first record lift using Island Victory’s offshore crane: Two manifolds of 175.2 tonnes each was lifted and placed on the seabed.

Island Victory will complete the Johan Castberg work in the beginning of July and will then start mobilizing for her next job in the Gulf of Mexico, commencing in August.

Source: Island Offshore