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GustoMSC
Karel Doormanweg 35
3115 JD Schiedam
The Netherlands
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info.gustomsc@nov.com
+31 (0)10 2883 000
The Pioneers of Offshore Engineering
GustoMSC is recognized for providing advanced design & engineering consultancy for mobile offshore units and reliable equipment.
We enable and support safe and efficient operations at sea, contributing to a sustainable future.
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From OSV to Cable-Lay Vessel
ARIADNE Conversion 2018-2024
InSide
A storytelling platform about our offshore challenges
August 2023
Reading time: 2 min
The demand for renewable energy generated at sea is experiencing rapid growth. This has resulted in a growing demand for cable-lay and repair vessels to connect wind farms to the power grid and keep the power flowing. There is also a trend toward repurposing offshore production resources with a good example being Carbon Capture & Storage (CCS). This is also the case in the offshore vessel market, where it is increasingly being examined whether vessels can be adapted to meet today’s need and the needs of the future.
Viking Poseidon becomes Ariadne
The majority of the deck equipment was installed in 2022, together with another NOV company, Remacut, so that the Ariadne could operate as a CLV. The Ariadne was fitted out with a main deck carousel with a capacity of 1 x 5,000 MT. An engineered cable-lay deck spread design, including tensioners, quadrant overboarding system, loading arm and chutes were delivered by Remacut with the support of GustoMSC as part of an integrated vessel solution.
The final stage of the conversion and SPS notation will be carried out in Q4 2023 with completion in Q1 2024. This will see an additional 4,000 MT underdeck carousel being installed and integrated into the vessel.
GustoMSC was responsible for the overall basic design and integration of all equipment, complete with required documentation and reports for class approval and FLAG administration for SPS notation.
Conversion and certification
Full vessel verification will be reassessed during the last phase of the conversion, including Global FE and Fatigue verification for the structural integrations that are part of the vessel conversion. In 2024, Ariadne will operate as a DP-3 Cable-Lay Vessel with 2 integrated carousels (1x 5,000 tons on the main deck and 1x 4,000 tons underdeck). The Ariadne will soon be fully refurbished and ready for its new tasks of installing subsea infrastructure for both the wind and O&G industry.
Ready for the new task
Asso.subsea has embraced this philosophy and purchased the Viking Poseidon with the intention to convert her from an Offshore Support Vessel (OSV) into a Cable-Lay Vessel (CLV). GustoMSC was asked to participate in the conversion of the Ariadne vessel including the SPS notation and reclassification to an ABS class notation. The basis of the Ariadne is an Ulstein SX-121 design, built in 2009 in Norway as the Viking Poseidon. In March 2017, the Viking Poseidon was acquired by Asso.subsea. and renamed Ariadne and initially deployed as an OSV. The Ariadne conversion to a CLV was realized via a multi-stage conversion strategy which started in 2018 in which the main ideas and proposals of the GustoMSC engineering team were implemented.
In Numbers...
5000
mt
4000
mt
Cable carousel – Above deck
Cable carousel – Belowdeck
Deadweight
mt
mt
mt
10000
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The demand for renewable energy generated at sea is experiencing rapid growth. This has resulted in a growing demand for cable-lay and repair vessels to connect wind farms to the power grid and keep the power flowing. There is also a trend toward repurposing offshore production resources with a good example being Carbon Capture & Storage (CCS). This is also the case in the offshore vessel market, where it is increasingly being examined whether vessels can be adapted to meet today’s need and the needs of the future.
Asso.subsea has embraced this philosophy and purchased the Viking Poseidon with the intention to convert her from an Offshore Support Vessel (OSV) into a Cable-Lay Vessel (CLV). GustoMSC was asked to participate in the conversion of the Ariadne vessel including the SPS notation and reclassification to an ABS class notation. The basis of the Ariadne is an Ulstein SX-121 design, built in 2009 in Norway as the Viking Poseidon. In March 2017, the Viking Poseidon was acquired by Asso.subsea. and renamed Ariadne and initially deployed as an OSV. The Ariadne conversion to a CLV was realized via a multi-stage conversion strategy which started in 2018 in which the main ideas and proposals of the GustoMSC engineering team were implemented.
Back to Overview
Viking Poseidon becomes Ariadne
The majority of the deck equipment was installed in 2022, together with another NOV company, Remacut, so that the Ariadne could operate as a CLV. The Ariadne was fitted out with a main deck carousel with a capacity of 1 x 5,000 MT. An engineered cable-lay deck spread design, including tensioners, quadrant overboarding system, loading arm and chutes were delivered by Remacut with the support of GustoMSC as part of an integrated vessel solution.
The final stage of the conversion and SPS notation will be carried out in Q4 2023 with completion in Q1 2024. This will see an additional 4,000 MT underdeck carousel being installed and integrated into the vessel.
GustoMSC was responsible for the overall basic design and integration of all equipment, complete with required documentation and reports for class approval and FLAG administration for SPS notation.
Conversion and certification
Full vessel verification will be reassessed during the last phase of the conversion, including Global FE and Fatigue verification for the structural integrations that are part of the vessel conversion. In 2024, Ariadne will operate as a DP-3 Cable-Lay Vessel with 2 integrated carousels (1x 5,000 tons on the main deck and 1x 4,000 tons underdeck). The Ariadne will soon be fully refurbished and ready for its new tasks of installing subsea infrastructure for both the wind and O&G industry.
Ready for the new task
Deck House, ROV Platform
Cable Carousels
Main Deck– 1x5,000 MT
In Hold– 1x4,000 MT
Foldable platform
Control Cabin Cable-Lay Operation
Cable-Lay Mezz. Deck Operation
Designated CPS System
Cable – Lay Tensioners (PS/SB)
Cable – Lay Tensioners (PS/SB)
Loading Arm Main Deck Carousel
Quadrant Overboarding System
Fully operational cable lay vessel
Prior to the conversion of the Ariadne
August 2023
Reading time: 1,5 min
From OSV to Cable-Lay Vessel
ARIADNE Conversion 2018-2024
InSide
A storytelling platform about our offshore challenges
Fact & Figures
Ariadne operating in France in cable laying operations for the two main sites St. Brieuc & Fecamp Offshore Wind Farm.
Facts & Figures
GustoMSC
Karel Doormanweg 35
3115 JD Schiedam
The Netherlands
The Pioneers of Offshore Engineering
GustoMSC is recognized for providing advanced design & engineering consultancy for mobile offshore units and reliable equipment.
We enable and support safe and efficient operations at sea, contributing to a sustainable future.
Please subscribe to the newsletter so we can keep you up to date with our latest stories and extra news updates.
Subscribe
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