Page 44: of Offshore Engineer Magazine (May/Jun 2020)

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PRODUCTS MOORING SOLUTIONS

Maersk

Lankhorst suction follower of 4.3m diameter to em- as the rope is man-handled into position. ing to 50 kArms-1s.

bed a plate anchor deeply in the soil. The The hold back sling is permanently Extensive research and development follower is retracted once the plate anchor secured to the deepwater mooring rope programs since the early ’90s, coupled is brought to design soil depth and can be and utilizes a high-performance rope to with recent numerical analysis and fnal- used again to install additional anchors. create loading eyes. These eyes can then ly, full-scale prototype testing, will ensure

This method provides signifcant savings be secured to a strongpoint or auxiliary the reliability of this latest development.

to project costs while maintaining eff- winch to transfer the load of the moor-

Welaptega cient anchoring of the offshore asset. ing line. In this way, it provides a quick

Remote Mooring Inspections

Maersk Maker, a 2019 new-build an- and safe means of holding the tension in chor handling tug supply vessel, trans- the mooring line while connections are Mooring integrity management special- ported and installed the anchors to 27m being made to other components. ists Welaptega offer UWILD inspections below seabed – marking only the second as part of its remote operations solutions.

SBM Offshore installation of mooring equipment at this Leveraging the scale of parent company

High Voltage Electrical swivel large size. Concurrently, subsea support Ashtead Technology, remote UWILDs are vessel Maersk Achiever deployed 650m- SBM Offshore’s sustainable goals aim carried out to support the requirements of long studless chains of 157mm diameter. at contributing to de-carbonizing FPSOs annual, 2.5-yearly and 5-yearly surveys.

In the end, a total of 4000 tonnes of by enabling power from shore. The High Welaptega has enabled remote use of mooring equipment was installed. Voltage Alternative Current (HVAC) its proprietary cleaning, inspection and

Electrical swivel is the enabling technol- measurement technologies - recognized as

Lankhorst Offshore ogy for the transfer of electrical power best-in-class for manned UWILD surveys

Quicker Deepwater Mooring onto Turret-moored FPSO’s between the - in addition to remote visual inspections.

Line Make-up stationary and the weathervaning part. With BP announcing its goal to re-

Lankhorst Offshore has developed a The company has now developed the duce the number of people working on hold-back sling designed to reduce the 132kV/170kV HVAC Electrical swivel, IMR vessels by 50% by 2025, the de- time needed for deepwater mooring line which will be tested in 2020, to bring the sire for lower cost and lower POB in- make-up. The device provides a second- necessary voltage capacity to the market. spection services is a priority for many ary rope termination on a main polyester This will lead to the frst 204 MVA pro- operators. As the COVID-19 era brings mooring line to aid the connection of two totype, compliant with IEC60071-1. further restrictions, remote inspections segments during installation offshore. It is based on two key technologies: offer a compelling, cost-effective service.

Deepwater mooring lines are made up • dielectric oil protection Remote inspection services allow of multiple rope segments. Connecting • a new generation of electrical contact operators to utilize experienced sub- the lines offshore can be time-consuming technology, increasing the short circuit rat- ject matter experts like Welaptega to 44 OFFSHORE ENGINEER OEDIGITAL.COM